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authorCVS to git conversion script <webmaster@postgresql.org>2002-06-20 20:29:55 +0000
committerCVS to git conversion script <webmaster@postgresql.org>2002-06-20 20:29:55 +0000
commit05dedace84ef8c93fea5309c3ac55f889011429b (patch)
tree4c7f513afbbc03060039a165d1770e11be711773 /src/backend/parser/analyze.c
parentd84fe82230c593f3dc5d7f427849b99d1efa8a0a (diff)
This commit was manufactured by cvs2git to create branch 'ecpg_big_bison'.
Sprout from master 2002-06-20 20:29:54 UTC Bruce Momjian <bruce@momjian.us> 'Update copyright to 2002.' 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src/include/storage/buf.h src/include/storage/buf_internals.h src/include/storage/buffile.h src/include/storage/bufmgr.h src/include/storage/bufpage.h src/include/storage/fd.h src/include/storage/freespace.h src/include/storage/ipc.h src/include/storage/item.h src/include/storage/itemid.h src/include/storage/itempos.h src/include/storage/itemptr.h src/include/storage/large_object.h src/include/storage/lmgr.h src/include/storage/lock.h src/include/storage/lwlock.h src/include/storage/off.h src/include/storage/page.h src/include/storage/pg_sema.h src/include/storage/pg_shmem.h src/include/storage/pmsignal.h src/include/storage/pos.h src/include/storage/proc.h src/include/storage/relfilenode.h src/include/storage/s_lock.h src/include/storage/shmem.h src/include/storage/sinval.h src/include/storage/sinvaladt.h src/include/storage/smgr.h src/include/storage/spin.h src/include/strdup.h src/include/tcop/dest.h src/include/tcop/fastpath.h src/include/tcop/pquery.h src/include/tcop/tcopdebug.h src/include/tcop/tcopprot.h src/include/tcop/utility.h src/include/utils/acl.h src/include/utils/array.h src/include/utils/ascii.h src/include/utils/bit.h src/include/utils/builtins.h src/include/utils/cash.h src/include/utils/catcache.h src/include/utils/date.h src/include/utils/datetime.h src/include/utils/datum.h src/include/utils/dynahash.h src/include/utils/dynamic_loader.h src/include/utils/elog.h src/include/utils/exc.h src/include/utils/excid.h src/include/utils/fcache.h src/include/utils/fmgrtab.h src/include/utils/formatting.h src/include/utils/geo_decls.h src/include/utils/guc.h src/include/utils/hsearch.h src/include/utils/inet.h src/include/utils/int8.h src/include/utils/inval.h src/include/utils/logtape.h src/include/utils/lsyscache.h src/include/utils/memutils.h src/include/utils/nabstime.h src/include/utils/numeric.h src/include/utils/palloc.h src/include/utils/pg_crc.h src/include/utils/pg_locale.h src/include/utils/pg_lzcompress.h src/include/utils/portal.h src/include/utils/ps_status.h src/include/utils/rel.h src/include/utils/relcache.h src/include/utils/selfuncs.h src/include/utils/sets.h src/include/utils/syscache.h src/include/utils/timestamp.h src/include/utils/tqual.h src/include/utils/tuplesort.h src/include/utils/tuplestore.h src/include/utils/varbit.h src/interfaces/Makefile src/interfaces/cli/example1.c src/interfaces/cli/example2.c src/interfaces/cli/sqlcli.h src/interfaces/jdbc/CHANGELOG src/interfaces/jdbc/Implementation src/interfaces/jdbc/Makefile src/interfaces/jdbc/README src/interfaces/jdbc/build.xml src/interfaces/jdbc/example/ImageViewer.java src/interfaces/jdbc/example/Unicode.java src/interfaces/jdbc/example/basic.java src/interfaces/jdbc/example/blobtest.java src/interfaces/jdbc/example/corba/StockClient.java src/interfaces/jdbc/example/corba/StockDB.java src/interfaces/jdbc/example/corba/StockDispenserImpl.java src/interfaces/jdbc/example/corba/StockItemImpl.java src/interfaces/jdbc/example/corba/StockServer.java src/interfaces/jdbc/example/corba/readme src/interfaces/jdbc/example/corba/stock.idl src/interfaces/jdbc/example/corba/stock.sql src/interfaces/jdbc/example/datestyle.java src/interfaces/jdbc/example/metadata.java src/interfaces/jdbc/example/psql.java src/interfaces/jdbc/example/threadsafe.java src/interfaces/jdbc/jdbc.jpx src/interfaces/jdbc/org/postgresql/Connection.java src/interfaces/jdbc/org/postgresql/Driver.java.in src/interfaces/jdbc/org/postgresql/Field.java src/interfaces/jdbc/org/postgresql/PG_Stream.java src/interfaces/jdbc/org/postgresql/PostgresqlDataSource.java src/interfaces/jdbc/org/postgresql/ResultSet.java src/interfaces/jdbc/org/postgresql/Statement.java src/interfaces/jdbc/org/postgresql/core/BytePoolDim1.java src/interfaces/jdbc/org/postgresql/core/BytePoolDim2.java src/interfaces/jdbc/org/postgresql/core/Encoding.java src/interfaces/jdbc/org/postgresql/core/MemoryPool.java src/interfaces/jdbc/org/postgresql/core/ObjectPool.java src/interfaces/jdbc/org/postgresql/core/QueryExecutor.java src/interfaces/jdbc/org/postgresql/core/SimpleObjectPool.java src/interfaces/jdbc/org/postgresql/core/StartupPacket.java src/interfaces/jdbc/org/postgresql/errors.properties src/interfaces/jdbc/org/postgresql/errors_de.properties src/interfaces/jdbc/org/postgresql/errors_fr.properties src/interfaces/jdbc/org/postgresql/errors_it.properties src/interfaces/jdbc/org/postgresql/errors_nl.properties src/interfaces/jdbc/org/postgresql/errors_zh_TW.properties src/interfaces/jdbc/org/postgresql/fastpath/Fastpath.java src/interfaces/jdbc/org/postgresql/fastpath/FastpathArg.java src/interfaces/jdbc/org/postgresql/geometric/PGbox.java src/interfaces/jdbc/org/postgresql/geometric/PGcircle.java src/interfaces/jdbc/org/postgresql/geometric/PGline.java src/interfaces/jdbc/org/postgresql/geometric/PGlseg.java src/interfaces/jdbc/org/postgresql/geometric/PGpath.java src/interfaces/jdbc/org/postgresql/geometric/PGpoint.java src/interfaces/jdbc/org/postgresql/geometric/PGpolygon.java src/interfaces/jdbc/org/postgresql/jdbc1/CallableStatement.java src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java src/interfaces/jdbc/org/postgresql/jdbc1/DatabaseMetaData.java src/interfaces/jdbc/org/postgresql/jdbc1/PreparedStatement.java src/interfaces/jdbc/org/postgresql/jdbc1/ResultSet.java src/interfaces/jdbc/org/postgresql/jdbc1/ResultSetMetaData.java src/interfaces/jdbc/org/postgresql/jdbc1/Statement.java src/interfaces/jdbc/org/postgresql/jdbc2/Array.java src/interfaces/jdbc/org/postgresql/jdbc2/CallableStatement.java src/interfaces/jdbc/org/postgresql/jdbc2/Connection.java src/interfaces/jdbc/org/postgresql/jdbc2/DatabaseMetaData.java src/interfaces/jdbc/org/postgresql/jdbc2/PBatchUpdateException.java src/interfaces/jdbc/org/postgresql/jdbc2/PreparedStatement.java src/interfaces/jdbc/org/postgresql/jdbc2/ResultSet.java src/interfaces/jdbc/org/postgresql/jdbc2/ResultSetMetaData.java src/interfaces/jdbc/org/postgresql/jdbc2/Statement.java src/interfaces/jdbc/org/postgresql/jdbc2/UpdateableResultSet.java src/interfaces/jdbc/org/postgresql/largeobject/BlobInputStream.java src/interfaces/jdbc/org/postgresql/largeobject/BlobOutputStream.java src/interfaces/jdbc/org/postgresql/largeobject/LargeObject.java src/interfaces/jdbc/org/postgresql/largeobject/LargeObjectManager.java src/interfaces/jdbc/org/postgresql/largeobject/PGblob.java src/interfaces/jdbc/org/postgresql/largeobject/PGclob.java src/interfaces/jdbc/org/postgresql/test/JDBC2Tests.java src/interfaces/jdbc/org/postgresql/test/README src/interfaces/jdbc/org/postgresql/test/jdbc2/ANTTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/BatchExecuteTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/BlobTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/ConnectionTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DatabaseMetaDataTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DateTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/DriverTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/EncodingTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/JBuilderTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/MiscTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/ResultSetTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/TimeTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/TimestampTest.java src/interfaces/jdbc/org/postgresql/test/jdbc2/UpdateableResultTest.java src/interfaces/jdbc/org/postgresql/util/MD5Digest.java src/interfaces/jdbc/org/postgresql/util/MessageTranslator.java src/interfaces/jdbc/org/postgresql/util/PGbytea.java src/interfaces/jdbc/org/postgresql/util/PGmoney.java src/interfaces/jdbc/org/postgresql/util/PGobject.java src/interfaces/jdbc/org/postgresql/util/PGtokenizer.java src/interfaces/jdbc/org/postgresql/util/PSQLException.java src/interfaces/jdbc/org/postgresql/util/Serialize.java src/interfaces/jdbc/org/postgresql/util/UnixCrypt.java src/interfaces/jdbc/org/postgresql/xa/ClientConnection.java src/interfaces/jdbc/org/postgresql/xa/TwoPhaseConnection.java src/interfaces/jdbc/org/postgresql/xa/TxConnection.java src/interfaces/jdbc/org/postgresql/xa/XAConnectionImpl.java src/interfaces/jdbc/org/postgresql/xa/XADataSourceImpl.java src/interfaces/jdbc/utils/CheckVersion.java src/interfaces/jdbc/utils/buildDriver src/interfaces/jdbc/utils/changelog.pl src/interfaces/libpgeasy/Makefile src/interfaces/libpgeasy/README src/interfaces/libpgeasy/examples/Makefile src/interfaces/libpgeasy/examples/pginsert.c src/interfaces/libpgeasy/examples/pgmultiresult.c src/interfaces/libpgeasy/examples/pgnulltest.c src/interfaces/libpgeasy/examples/pgwordcount.c src/interfaces/libpgeasy/halt.c src/interfaces/libpgeasy/halt.h src/interfaces/libpgeasy/libpgeasy.c src/interfaces/libpgeasy/libpgeasy.h src/interfaces/libpgtcl/Makefile src/interfaces/libpgtcl/README 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src/interfaces/libpq/ru.po src/interfaces/libpq/sv.po src/interfaces/libpq/win32.c src/interfaces/libpq/win32.h src/interfaces/libpq/win32.mak src/interfaces/libpq/zh_CN.po src/interfaces/libpq/zh_TW.po src/interfaces/libpq++/CHANGES src/interfaces/libpq++/Makefile src/interfaces/libpq++/README src/interfaces/libpq++/TODO src/interfaces/libpq++/examples/Makefile src/interfaces/libpq++/examples/testlibpq0.cc src/interfaces/libpq++/examples/testlibpq1.cc src/interfaces/libpq++/examples/testlibpq2.cc src/interfaces/libpq++/examples/testlibpq2.sql src/interfaces/libpq++/examples/testlibpq3.cc src/interfaces/libpq++/examples/testlibpq3.sql src/interfaces/libpq++/examples/testlibpq4.cc src/interfaces/libpq++/examples/testlibpq4.sql src/interfaces/libpq++/examples/testlibpq5.cc src/interfaces/libpq++/examples/testlibpq5.sql src/interfaces/libpq++/examples/testlibpq6.cc src/interfaces/libpq++/examples/testlo.cc src/interfaces/libpq++/libpq++.h src/interfaces/libpq++/libpq++dll.rc src/interfaces/libpq++/pgconnection.cc src/interfaces/libpq++/pgconnection.h src/interfaces/libpq++/pgcursordb.cc src/interfaces/libpq++/pgcursordb.h src/interfaces/libpq++/pgdatabase.cc src/interfaces/libpq++/pgdatabase.h src/interfaces/libpq++/pglobject.cc src/interfaces/libpq++/pglobject.h src/interfaces/libpq++/pgtransdb.cc src/interfaces/libpq++/pgtransdb.h src/interfaces/libpq++/win32.mak src/interfaces/odbc/GNUmakefile src/interfaces/odbc/bind.c src/interfaces/odbc/bind.h src/interfaces/odbc/columninfo.c src/interfaces/odbc/columninfo.h src/interfaces/odbc/connection.c src/interfaces/odbc/connection.h src/interfaces/odbc/convert.c src/interfaces/odbc/convert.h src/interfaces/odbc/descriptor.h src/interfaces/odbc/dlg_specific.c src/interfaces/odbc/dlg_specific.h src/interfaces/odbc/dlg_wingui.c src/interfaces/odbc/drvconn.c src/interfaces/odbc/environ.c src/interfaces/odbc/environ.h src/interfaces/odbc/execute.c src/interfaces/odbc/gpps.c src/interfaces/odbc/gpps.h src/interfaces/odbc/info.c src/interfaces/odbc/info30.c src/interfaces/odbc/iodbc.h src/interfaces/odbc/isql.h src/interfaces/odbc/isqlext.h src/interfaces/odbc/license.txt src/interfaces/odbc/lobj.c src/interfaces/odbc/lobj.h src/interfaces/odbc/md5.c src/interfaces/odbc/md5.h src/interfaces/odbc/misc.c src/interfaces/odbc/misc.h src/interfaces/odbc/multibyte.c src/interfaces/odbc/multibyte.h src/interfaces/odbc/notice.txt src/interfaces/odbc/odbc.sql src/interfaces/odbc/odbcapi.c src/interfaces/odbc/odbcapi25w.c src/interfaces/odbc/odbcapi30.c src/interfaces/odbc/odbcapi30w.c src/interfaces/odbc/odbcapiw.c src/interfaces/odbc/odbcinst.ini src/interfaces/odbc/options.c src/interfaces/odbc/parse.c src/interfaces/odbc/pgapi30.c src/interfaces/odbc/pgapifunc.h src/interfaces/odbc/pgtypes.c src/interfaces/odbc/pgtypes.h src/interfaces/odbc/psqlodbc.c src/interfaces/odbc/psqlodbc.h src/interfaces/odbc/psqlodbc.rc src/interfaces/odbc/psqlodbc.reg src/interfaces/odbc/psqlodbc30.reg src/interfaces/odbc/psqlodbc30w.reg src/interfaces/odbc/psqlodbc_api30.def src/interfaces/odbc/psqlodbc_api30w.def src/interfaces/odbc/psqlodbc_apiw.def src/interfaces/odbc/psqlodbc_win32.def src/interfaces/odbc/qresult.c src/interfaces/odbc/qresult.h src/interfaces/odbc/readme.txt src/interfaces/odbc/resource.h src/interfaces/odbc/results.c src/interfaces/odbc/setup.c src/interfaces/odbc/setup.rul src/interfaces/odbc/socket.c src/interfaces/odbc/socket.h src/interfaces/odbc/statement.c src/interfaces/odbc/statement.h src/interfaces/odbc/tuple.c src/interfaces/odbc/tuple.h src/interfaces/odbc/tuplelist.c src/interfaces/odbc/tuplelist.h src/interfaces/odbc/version.h src/interfaces/odbc/win32.mak src/interfaces/odbc/win32_30.mak src/interfaces/odbc/win32_30w.mak src/interfaces/odbc/win32w.mak src/interfaces/odbc/win_md5.c src/interfaces/odbc/win_setup.h src/interfaces/odbc/win_unicode.c src/interfaces/perl5/Changes src/interfaces/perl5/GNUmakefile src/interfaces/perl5/MANIFEST src/interfaces/perl5/Makefile.PL src/interfaces/perl5/Pg.pm src/interfaces/perl5/Pg.xs src/interfaces/perl5/README src/interfaces/perl5/examples/ApachePg.pl src/interfaces/perl5/examples/example.newstyle src/interfaces/perl5/examples/example.oldstyle src/interfaces/perl5/ppport.h src/interfaces/perl5/test.pl src/interfaces/perl5/typemap src/interfaces/python/Announce src/interfaces/python/ChangeLog src/interfaces/python/GNUmakefile src/interfaces/python/PyGreSQL.spec src/interfaces/python/README src/interfaces/python/README.linux src/interfaces/python/Setup.in.raw src/interfaces/python/pg.py src/interfaces/python/pgdb.py src/interfaces/python/pgmodule.c src/interfaces/python/setup.py src/interfaces/python/tutorial/advanced.py src/interfaces/python/tutorial/basics.py src/interfaces/python/tutorial/func.py src/interfaces/python/tutorial/syscat.py src/interfaces/ssl/client.conf src/interfaces/ssl/mkcert.sh src/interfaces/ssl/pgkeygen.sh src/interfaces/ssl/root.conf src/interfaces/ssl/server.conf src/makefiles/Makefile.aix src/makefiles/Makefile.beos src/makefiles/Makefile.bsdi src/makefiles/Makefile.darwin src/makefiles/Makefile.dgux src/makefiles/Makefile.freebsd src/makefiles/Makefile.hpux src/makefiles/Makefile.irix5 src/makefiles/Makefile.linux src/makefiles/Makefile.netbsd src/makefiles/Makefile.openbsd src/makefiles/Makefile.osf src/makefiles/Makefile.qnx4 src/makefiles/Makefile.sco src/makefiles/Makefile.solaris src/makefiles/Makefile.sunos4 src/makefiles/Makefile.svr4 src/makefiles/Makefile.ultrix4 src/makefiles/Makefile.univel src/makefiles/Makefile.unixware src/makefiles/Makefile.win src/nls-global.mk src/pl/Makefile src/pl/plperl/GNUmakefile src/pl/plperl/README src/pl/plperl/SPI.xs src/pl/plperl/eloglvl.c src/pl/plperl/eloglvl.h src/pl/plperl/plperl.c src/pl/plperl/ppport.h src/pl/plpgsql/Makefile src/pl/plpgsql/src/.cvsignore src/pl/plpgsql/src/INSTALL src/pl/plpgsql/src/Makefile src/pl/plpgsql/src/gram.y src/pl/plpgsql/src/pl_comp.c 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src/test/bench/query01 src/test/bench/query02 src/test/bench/query03 src/test/bench/query04 src/test/bench/query05 src/test/bench/query06 src/test/bench/query07 src/test/bench/query08 src/test/bench/query09 src/test/bench/query10 src/test/bench/query11 src/test/bench/query12 src/test/bench/query13 src/test/bench/query14 src/test/bench/query15 src/test/bench/query16 src/test/bench/query17 src/test/bench/query18 src/test/bench/query19 src/test/bench/query20 src/test/bench/query21 src/test/bench/query22 src/test/bench/query23 src/test/bench/query24 src/test/bench/query25 src/test/bench/query26 src/test/bench/query27 src/test/bench/query28 src/test/bench/query29 src/test/bench/query30 src/test/bench/query31 src/test/bench/query32 src/test/bench/runwisc.sh src/test/bench/wholebench.sh src/test/examples/Makefile src/test/examples/testlibpq.c src/test/examples/testlibpq2.c src/test/examples/testlibpq2.sql src/test/examples/testlibpq3.c src/test/examples/testlibpq3.sql src/test/examples/testlibpq4.c src/test/examples/testlo.c src/test/locale/Makefile src/test/locale/README src/test/locale/de_DE.ISO8859-1/Makefile src/test/locale/de_DE.ISO8859-1/README src/test/locale/de_DE.ISO8859-1/expected/de-ctype.out src/test/locale/de_DE.ISO8859-1/expected/test-de-char.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-select.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-sort.out src/test/locale/de_DE.ISO8859-1/expected/test-de-text.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-char.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-text.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-upper-varchar.sql.out src/test/locale/de_DE.ISO8859-1/expected/test-de-varchar.sql.out src/test/locale/de_DE.ISO8859-1/runall src/test/locale/de_DE.ISO8859-1/test-de-select.sql.in src/test/locale/de_DE.ISO8859-1/test-de-sort.in src/test/locale/de_DE.ISO8859-1/test-de-upper.sql.in src/test/locale/de_DE.ISO8859-1/test-de.sql.in src/test/locale/gr_GR.ISO8859-7/Makefile src/test/locale/gr_GR.ISO8859-7/README src/test/locale/gr_GR.ISO8859-7/expected/gr-ctype.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-char.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-select.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-sort.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-text.sql.out src/test/locale/gr_GR.ISO8859-7/expected/test-gr-varchar.sql.out src/test/locale/gr_GR.ISO8859-7/runall src/test/locale/gr_GR.ISO8859-7/test-gr-select.sql.in src/test/locale/gr_GR.ISO8859-7/test-gr-sort.in src/test/locale/gr_GR.ISO8859-7/test-gr.sql.in src/test/locale/koi8-r/Makefile src/test/locale/koi8-r/expected/koi8-ctype.out src/test/locale/koi8-r/expected/test-koi8-char.sql.out src/test/locale/koi8-r/expected/test-koi8-select.sql.out src/test/locale/koi8-r/expected/test-koi8-sort.out src/test/locale/koi8-r/expected/test-koi8-text.sql.out src/test/locale/koi8-r/expected/test-koi8-varchar.sql.out src/test/locale/koi8-r/runall src/test/locale/koi8-r/test-koi8-select.sql.in src/test/locale/koi8-r/test-koi8-sort.in src/test/locale/koi8-r/test-koi8.sql.in src/test/locale/koi8-to-win1251/Makefile src/test/locale/koi8-to-win1251/README src/test/locale/koi8-to-win1251/expected/test-koi8-char.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-select.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-sort.out src/test/locale/koi8-to-win1251/expected/test-koi8-text.sql.out src/test/locale/koi8-to-win1251/expected/test-koi8-varchar.sql.out src/test/locale/koi8-to-win1251/runall src/test/locale/koi8-to-win1251/test-koi8-select.sql.in src/test/locale/koi8-to-win1251/test-koi8-sort.in src/test/locale/koi8-to-win1251/test-koi8.sql.in src/test/locale/sort-test.pl src/test/locale/sort-test.py src/test/locale/test-ctype.c src/test/locale/test-pgsql-locale.c src/test/mb/README src/test/mb/expected/big5.out src/test/mb/expected/euc_cn.out src/test/mb/expected/euc_jp.out src/test/mb/expected/euc_kr.out src/test/mb/expected/euc_tw.out src/test/mb/expected/mule_internal.out src/test/mb/expected/sjis.out src/test/mb/expected/unicode.out src/test/mb/mbregress.sh src/test/mb/sql/big5.sql src/test/mb/sql/euc_cn.sql src/test/mb/sql/euc_jp.sql src/test/mb/sql/euc_kr.sql src/test/mb/sql/euc_tw.sql src/test/mb/sql/mule_internal.sql src/test/mb/sql/sjis.sql src/test/mb/sql/unicode.sql src/test/performance/results/PgSQL.970926 src/test/performance/runtests.pl src/test/performance/sqls/connection src/test/performance/sqls/crtsimple src/test/performance/sqls/crtsimpleidx src/test/performance/sqls/drpsimple src/test/performance/sqls/inssimple src/test/performance/sqls/inssimple.data src/test/performance/sqls/orbsimple src/test/performance/sqls/slcsimple src/test/performance/sqls/slcsimple.data src/test/performance/sqls/vacuum src/test/performance/start-pgsql.sh src/test/regress/GNUmakefile src/test/regress/Makefile src/test/regress/README src/test/regress/data/agg.data src/test/regress/data/constrf.data src/test/regress/data/constro.data src/test/regress/data/dept.data src/test/regress/data/desc.data src/test/regress/data/emp.data src/test/regress/data/hash.data src/test/regress/data/onek.data src/test/regress/data/person.data src/test/regress/data/real_city.data src/test/regress/data/rect.data src/test/regress/data/streets.data src/test/regress/data/stud_emp.data src/test/regress/data/student.data src/test/regress/data/tenk.data src/test/regress/expected/abstime-solaris-1947.out src/test/regress/expected/abstime.out src/test/regress/expected/aggregates.out src/test/regress/expected/alter_table.out src/test/regress/expected/arrays.out src/test/regress/expected/bit.out src/test/regress/expected/boolean.out src/test/regress/expected/box.out src/test/regress/expected/btree_index.out src/test/regress/expected/case.out src/test/regress/expected/char.out src/test/regress/expected/char_1.out src/test/regress/expected/circle.out src/test/regress/expected/comments.out src/test/regress/expected/create_aggregate.out src/test/regress/expected/create_index.out src/test/regress/expected/create_misc.out src/test/regress/expected/create_operator.out src/test/regress/expected/create_table.out src/test/regress/expected/create_type.out src/test/regress/expected/create_view.out src/test/regress/expected/date.out src/test/regress/expected/domain.out src/test/regress/expected/errors.out src/test/regress/expected/euc_cn.out src/test/regress/expected/euc_jp.out src/test/regress/expected/euc_kr.out src/test/regress/expected/euc_tw.out src/test/regress/expected/float4-exp-three-digits.out src/test/regress/expected/float4.out src/test/regress/expected/float8-exp-three-digits.out src/test/regress/expected/float8-fp-exception.out src/test/regress/expected/float8-small-is-zero.out src/test/regress/expected/float8.out src/test/regress/expected/foreign_key.out src/test/regress/expected/geometry-alpha-precision.out src/test/regress/expected/geometry-bsdi-precision.out src/test/regress/expected/geometry-i86-gnulibc.out src/test/regress/expected/geometry-intel-beos.out src/test/regress/expected/geometry-irix.out src/test/regress/expected/geometry-positive-zeros-bsd.out src/test/regress/expected/geometry-positive-zeros.out src/test/regress/expected/geometry-powerpc-aix4.out src/test/regress/expected/geometry-powerpc-darwin.out src/test/regress/expected/geometry-powerpc-linux-gnulibc1.out src/test/regress/expected/geometry-solaris-i386-pc.out src/test/regress/expected/geometry-solaris-precision.out src/test/regress/expected/geometry-uw7-cc.out src/test/regress/expected/geometry-uw7-gcc.out src/test/regress/expected/geometry.out src/test/regress/expected/hash_index.out src/test/regress/expected/horology-no-DST-before-1970.out src/test/regress/expected/horology-solaris-1947.out src/test/regress/expected/horology.out src/test/regress/expected/inet.out src/test/regress/expected/inherit.out src/test/regress/expected/insert.out src/test/regress/expected/int2.out src/test/regress/expected/int4.out src/test/regress/expected/int8-exp-three-digits.out src/test/regress/expected/int8.out src/test/regress/expected/interval.out src/test/regress/expected/join.out src/test/regress/expected/limit.out src/test/regress/expected/lseg.out src/test/regress/expected/mule_internal.out src/test/regress/expected/name.out src/test/regress/expected/numeric.out src/test/regress/expected/numeric_big.out src/test/regress/expected/numerology.out src/test/regress/expected/oid.out src/test/regress/expected/oidjoins.out src/test/regress/expected/opr_sanity.out src/test/regress/expected/path.out src/test/regress/expected/plpgsql.out src/test/regress/expected/point.out src/test/regress/expected/polygon.out src/test/regress/expected/portals.out src/test/regress/expected/portals_p2.out src/test/regress/expected/privileges.out src/test/regress/expected/random.out src/test/regress/expected/reltime.out src/test/regress/expected/rules.out src/test/regress/expected/sanity_check.out src/test/regress/expected/select.out src/test/regress/expected/select_distinct.out src/test/regress/expected/select_distinct_on.out src/test/regress/expected/select_having.out src/test/regress/expected/select_having_1.out src/test/regress/expected/select_implicit.out src/test/regress/expected/select_implicit_1.out src/test/regress/expected/select_into.out src/test/regress/expected/select_views.out src/test/regress/expected/select_views_1.out src/test/regress/expected/sql_ascii.out src/test/regress/expected/strings.out src/test/regress/expected/subselect.out src/test/regress/expected/temp.out src/test/regress/expected/text.out src/test/regress/expected/time.out src/test/regress/expected/timestamp.out src/test/regress/expected/timestamptz.out src/test/regress/expected/timetz.out src/test/regress/expected/tinterval-solaris-1947.out src/test/regress/expected/tinterval.out src/test/regress/expected/transactions.out src/test/regress/expected/triggers.out src/test/regress/expected/type_sanity.out src/test/regress/expected/union.out src/test/regress/expected/varchar.out src/test/regress/expected/varchar_1.out src/test/regress/input/constraints.source src/test/regress/input/copy.source src/test/regress/input/create_function_1.source src/test/regress/input/create_function_2.source src/test/regress/input/misc.source src/test/regress/output/constraints.source src/test/regress/output/copy.source src/test/regress/output/create_function_1.source src/test/regress/output/create_function_2.source src/test/regress/output/misc.source src/test/regress/parallel_schedule src/test/regress/pg_regress.sh src/test/regress/regress.c src/test/regress/regressplans.sh src/test/regress/resultmap src/test/regress/serial_schedule src/test/regress/sql/abstime.sql src/test/regress/sql/aggregates.sql src/test/regress/sql/alter_table.sql src/test/regress/sql/arrays.sql src/test/regress/sql/bit.sql src/test/regress/sql/boolean.sql src/test/regress/sql/box.sql src/test/regress/sql/btree_index.sql src/test/regress/sql/case.sql src/test/regress/sql/char.sql src/test/regress/sql/circle.sql src/test/regress/sql/comments.sql src/test/regress/sql/create_aggregate.sql src/test/regress/sql/create_index.sql src/test/regress/sql/create_misc.sql src/test/regress/sql/create_operator.sql src/test/regress/sql/create_table.sql src/test/regress/sql/create_type.sql src/test/regress/sql/create_view.sql src/test/regress/sql/date.sql src/test/regress/sql/domain.sql src/test/regress/sql/drop.sql src/test/regress/sql/errors.sql src/test/regress/sql/euc_cn.sql src/test/regress/sql/euc_jp.sql src/test/regress/sql/euc_kr.sql src/test/regress/sql/euc_tw.sql src/test/regress/sql/float4.sql src/test/regress/sql/float8.sql src/test/regress/sql/foreign_key.sql src/test/regress/sql/geometry.sql src/test/regress/sql/hash_index.sql src/test/regress/sql/horology.sql src/test/regress/sql/inet.sql src/test/regress/sql/inherit.sql src/test/regress/sql/insert.sql src/test/regress/sql/int2.sql src/test/regress/sql/int4.sql src/test/regress/sql/int8.sql src/test/regress/sql/interval.sql src/test/regress/sql/join.sql src/test/regress/sql/limit.sql src/test/regress/sql/lseg.sql src/test/regress/sql/mule_internal.sql src/test/regress/sql/name.sql src/test/regress/sql/numeric.sql src/test/regress/sql/numeric_big.sql src/test/regress/sql/numerology.sql src/test/regress/sql/oid.sql src/test/regress/sql/oidjoins.sql src/test/regress/sql/opr_sanity.sql src/test/regress/sql/path.sql src/test/regress/sql/plpgsql.sql src/test/regress/sql/point.sql src/test/regress/sql/polygon.sql src/test/regress/sql/portals.sql src/test/regress/sql/portals_p2.sql src/test/regress/sql/privileges.sql src/test/regress/sql/random.sql src/test/regress/sql/reltime.sql src/test/regress/sql/rules.sql src/test/regress/sql/sanity_check.sql src/test/regress/sql/select.sql src/test/regress/sql/select_distinct.sql src/test/regress/sql/select_distinct_on.sql src/test/regress/sql/select_having.sql src/test/regress/sql/select_implicit.sql src/test/regress/sql/select_into.sql src/test/regress/sql/select_views.sql src/test/regress/sql/sql_ascii.sql src/test/regress/sql/strings.sql src/test/regress/sql/subselect.sql src/test/regress/sql/temp.sql src/test/regress/sql/text.sql src/test/regress/sql/time.sql src/test/regress/sql/timestamp.sql src/test/regress/sql/timestamptz.sql src/test/regress/sql/timetz.sql src/test/regress/sql/tinterval.sql src/test/regress/sql/transactions.sql src/test/regress/sql/triggers.sql src/test/regress/sql/type_sanity.sql src/test/regress/sql/union.sql src/test/regress/sql/varchar.sql src/tools/RELEASE_CHANGES src/tools/backend/README src/tools/backend/backend_dirs.html src/tools/backend/flow.fig src/tools/backend/flow.gif src/tools/backend/index.html src/tools/ccsym src/tools/copyright src/tools/entab/Makefile src/tools/entab/entab.c src/tools/entab/entab.man src/tools/entab/halt.c src/tools/find_badmacros src/tools/find_static src/tools/find_typedef src/tools/make_ctags src/tools/make_diff/README src/tools/make_diff/cporig src/tools/make_diff/difforig src/tools/make_diff/rmorig src/tools/make_etags src/tools/make_keywords src/tools/make_mkid src/tools/pgcvslog src/tools/pginclude/README src/tools/pginclude/pgcompinclude src/tools/pginclude/pgdefine src/tools/pginclude/pgfixinclude src/tools/pginclude/pgrminclude src/tools/pgindent/README src/tools/pgindent/indent.bsd.patch src/tools/pgindent/pgcppindent src/tools/pgindent/pgindent src/tools/pgindent/pgjindent src/tutorial/Makefile src/tutorial/README src/tutorial/advanced.source src/tutorial/basics.source src/tutorial/beard.c src/tutorial/complex.c src/tutorial/complex.source src/tutorial/funcs.c src/tutorial/funcs.source src/tutorial/funcs_new.c src/tutorial/syscat.source src/utils/Makefile src/utils/README src/utils/dllinit.c src/utils/getopt.c src/utils/strdup.c src/win32.mak
Diffstat (limited to 'src/backend/parser/analyze.c')
-rw-r--r--src/backend/parser/analyze.c3260
1 files changed, 0 insertions, 3260 deletions
diff --git a/src/backend/parser/analyze.c b/src/backend/parser/analyze.c
deleted file mode 100644
index b1b94dc6fda..00000000000
--- a/src/backend/parser/analyze.c
+++ /dev/null
@@ -1,3260 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * analyze.c
- * transform the parse tree into a query tree
- *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- * $Header: /cvsroot/pgsql/src/backend/parser/analyze.c,v 1.237 2002/06/20 20:29:31 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-
-#include "postgres.h"
-
-#include "access/heapam.h"
-#include "catalog/catname.h"
-#include "catalog/heap.h"
-#include "catalog/index.h"
-#include "catalog/namespace.h"
-#include "catalog/pg_index.h"
-#include "catalog/pg_type.h"
-#include "nodes/makefuncs.h"
-#include "parser/analyze.h"
-#include "parser/gramparse.h"
-#include "parser/parsetree.h"
-#include "parser/parse_agg.h"
-#include "parser/parse_clause.h"
-#include "parser/parse_coerce.h"
-#include "parser/parse_expr.h"
-#include "parser/parse_oper.h"
-#include "parser/parse_relation.h"
-#include "parser/parse_target.h"
-#include "parser/parse_type.h"
-#include "parser/parse_expr.h"
-#include "rewrite/rewriteManip.h"
-#include "utils/builtins.h"
-#include "utils/fmgroids.h"
-#include "utils/lsyscache.h"
-#include "utils/relcache.h"
-#include "utils/syscache.h"
-#ifdef MULTIBYTE
-#include "mb/pg_wchar.h"
-#endif
-
-
-/* State shared by transformCreateSchemaStmt and its subroutines */
-typedef struct
-{
- const char *stmtType; /* "CREATE TABLE" or "ALTER TABLE" */
- char *schemaname; /* name of schema */
- char *authid; /* owner of schema */
- List *tables; /* CREATE TABLE items */
- List *views; /* CREATE VIEW items */
- List *grants; /* GRANT items */
- List *fwconstraints; /* Forward referencing FOREIGN KEY constraints */
- List *alters; /* Generated ALTER items (from the above) */
- List *ixconstraints; /* index-creating constraints */
- List *blist; /* "before list" of things to do before
- * creating the schema */
- List *alist; /* "after list" of things to do after
- * creating the schema */
-} CreateSchemaStmtContext;
-
-/* State shared by transformCreateStmt and its subroutines */
-typedef struct
-{
- const char *stmtType; /* "CREATE TABLE" or "ALTER TABLE" */
- RangeVar *relation; /* relation to create */
- List *inhRelations; /* relations to inherit from */
- bool hasoids; /* does relation have an OID column? */
- Oid relOid; /* OID of table, if ALTER TABLE case */
- List *columns; /* ColumnDef items */
- List *ckconstraints; /* CHECK constraints */
- List *fkconstraints; /* FOREIGN KEY constraints */
- List *ixconstraints; /* index-creating constraints */
- List *blist; /* "before list" of things to do before
- * creating the table */
- List *alist; /* "after list" of things to do after
- * creating the table */
- IndexStmt *pkey; /* PRIMARY KEY index, if any */
-} CreateStmtContext;
-
-
-static Query *transformStmt(ParseState *pstate, Node *stmt,
- List **extras_before, List **extras_after);
-static Query *transformDeleteStmt(ParseState *pstate, DeleteStmt *stmt);
-static Query *transformInsertStmt(ParseState *pstate, InsertStmt *stmt,
- List **extras_before, List **extras_after);
-static Query *transformIndexStmt(ParseState *pstate, IndexStmt *stmt);
-static Query *transformRuleStmt(ParseState *query, RuleStmt *stmt,
- List **extras_before, List **extras_after);
-static Query *transformSelectStmt(ParseState *pstate, SelectStmt *stmt);
-static Query *transformSetOperationStmt(ParseState *pstate, SelectStmt *stmt);
-static Node *transformSetOperationTree(ParseState *pstate, SelectStmt *stmt);
-static Query *transformUpdateStmt(ParseState *pstate, UpdateStmt *stmt);
-static Query *transformCreateStmt(ParseState *pstate, CreateStmt *stmt,
- List **extras_before, List **extras_after);
-static Query *transformAlterTableStmt(ParseState *pstate, AlterTableStmt *stmt,
- List **extras_before, List **extras_after);
-static void transformColumnDefinition(ParseState *pstate,
- CreateStmtContext *cxt,
- ColumnDef *column);
-static void transformTableConstraint(ParseState *pstate,
- CreateStmtContext *cxt,
- Constraint *constraint);
-static void transformIndexConstraints(ParseState *pstate,
- CreateStmtContext *cxt);
-static void transformFKConstraints(ParseState *pstate,
- CreateStmtContext *cxt);
-static void applyColumnNames(List *dst, List *src);
-static List *getSetColTypes(ParseState *pstate, Node *node);
-static void transformForUpdate(Query *qry, List *forUpdate);
-static void transformConstraintAttrs(List *constraintList);
-static void transformColumnType(ParseState *pstate, ColumnDef *column);
-static void transformFkeyCheckAttrs(FkConstraint *fkconstraint, Oid *pktypoid);
-static void transformFkeyGetPrimaryKey(FkConstraint *fkconstraint, Oid *pktypoid);
-static bool relationHasPrimaryKey(Oid relationOid);
-static Oid transformFkeyGetColType(CreateStmtContext *cxt, char *colname);
-static void release_pstate_resources(ParseState *pstate);
-static FromExpr *makeFromExpr(List *fromlist, Node *quals);
-
-
-
-/*
- * parse_analyze -
- * analyze a raw parse tree and transform it to Query form.
- *
- * The result is a List of Query nodes (we need a list since some commands
- * produce multiple Queries). Optimizable statements require considerable
- * transformation, while many utility-type statements are simply hung off
- * a dummy CMD_UTILITY Query node.
- */
-List *
-parse_analyze(Node *parseTree, ParseState *parentParseState)
-{
- List *result = NIL;
- ParseState *pstate = make_parsestate(parentParseState);
- /* Lists to return extra commands from transformation */
- List *extras_before = NIL;
- List *extras_after = NIL;
- Query *query;
- List *listscan;
-
- query = transformStmt(pstate, parseTree, &extras_before, &extras_after);
- release_pstate_resources(pstate);
-
- while (extras_before != NIL)
- {
- result = nconc(result, parse_analyze(lfirst(extras_before), pstate));
- extras_before = lnext(extras_before);
- }
-
- result = lappend(result, query);
-
- while (extras_after != NIL)
- {
- result = nconc(result, parse_analyze(lfirst(extras_after), pstate));
- extras_after = lnext(extras_after);
- }
-
- /*
- * Make sure that only the original query is marked original.
- * We have to do this explicitly since recursive calls of parse_analyze
- * will have set originalQuery in some of the added-on queries.
- */
- foreach(listscan, result)
- {
- Query *q = lfirst(listscan);
-
- q->originalQuery = (q == query);
- }
-
- pfree(pstate);
-
- return result;
-}
-
-static void
-release_pstate_resources(ParseState *pstate)
-{
- if (pstate->p_target_relation != NULL)
- heap_close(pstate->p_target_relation, NoLock);
- pstate->p_target_relation = NULL;
- pstate->p_target_rangetblentry = NULL;
-}
-
-/*
- * transformStmt -
- * transform a Parse tree into a Query tree.
- */
-static Query *
-transformStmt(ParseState *pstate, Node *parseTree,
- List **extras_before, List **extras_after)
-{
- Query *result = NULL;
-
- switch (nodeTag(parseTree))
- {
- /*
- * Non-optimizable statements
- */
- case T_CreateStmt:
- result = transformCreateStmt(pstate, (CreateStmt *) parseTree,
- extras_before, extras_after);
- break;
-
- case T_IndexStmt:
- result = transformIndexStmt(pstate, (IndexStmt *) parseTree);
- break;
-
- case T_RuleStmt:
- result = transformRuleStmt(pstate, (RuleStmt *) parseTree,
- extras_before, extras_after);
- break;
-
- case T_ViewStmt:
- {
- ViewStmt *n = (ViewStmt *) parseTree;
-
- n->query = transformStmt(pstate, (Node *) n->query,
- extras_before, extras_after);
-
- /*
- * If a list of column names was given, run through and
- * insert these into the actual query tree. - thomas
- * 2000-03-08
- *
- * Outer loop is over targetlist to make it easier to skip
- * junk targetlist entries.
- */
- if (n->aliases != NIL)
- {
- List *aliaslist = n->aliases;
- List *targetList;
-
- foreach(targetList, n->query->targetList)
- {
- TargetEntry *te = (TargetEntry *) lfirst(targetList);
- Resdom *rd;
- Ident *id;
-
- Assert(IsA(te, TargetEntry));
- rd = te->resdom;
- Assert(IsA(rd, Resdom));
- if (rd->resjunk) /* junk columns don't get
- * aliases */
- continue;
- id = (Ident *) lfirst(aliaslist);
- Assert(IsA(id, Ident));
- rd->resname = pstrdup(id->name);
- aliaslist = lnext(aliaslist);
- if (aliaslist == NIL)
- break; /* done assigning aliases */
- }
-
- if (aliaslist != NIL)
- elog(ERROR, "CREATE VIEW specifies more column names than columns");
- }
- result = makeNode(Query);
- result->commandType = CMD_UTILITY;
- result->utilityStmt = (Node *) n;
- }
- break;
-
- case T_ExplainStmt:
- {
- ExplainStmt *n = (ExplainStmt *) parseTree;
-
- result = makeNode(Query);
- result->commandType = CMD_UTILITY;
- n->query = transformStmt(pstate, (Node *) n->query,
- extras_before, extras_after);
- result->utilityStmt = (Node *) parseTree;
- }
- break;
-
- case T_AlterTableStmt:
- result = transformAlterTableStmt(pstate, (AlterTableStmt *) parseTree,
- extras_before, extras_after);
- break;
-
- /*
- * Optimizable statements
- */
- case T_InsertStmt:
- result = transformInsertStmt(pstate, (InsertStmt *) parseTree,
- extras_before, extras_after);
- break;
-
- case T_DeleteStmt:
- result = transformDeleteStmt(pstate, (DeleteStmt *) parseTree);
- break;
-
- case T_UpdateStmt:
- result = transformUpdateStmt(pstate, (UpdateStmt *) parseTree);
- break;
-
- case T_SelectStmt:
- if (((SelectStmt *) parseTree)->op == SETOP_NONE)
- result = transformSelectStmt(pstate,
- (SelectStmt *) parseTree);
- else
- result = transformSetOperationStmt(pstate,
- (SelectStmt *) parseTree);
- break;
-
- default:
-
- /*
- * other statements don't require any transformation-- just
- * return the original parsetree, yea!
- */
- result = makeNode(Query);
- result->commandType = CMD_UTILITY;
- result->utilityStmt = (Node *) parseTree;
- break;
- }
- return result;
-}
-
-/*
- * transformDeleteStmt -
- * transforms a Delete Statement
- */
-static Query *
-transformDeleteStmt(ParseState *pstate, DeleteStmt *stmt)
-{
- Query *qry = makeNode(Query);
- Node *qual;
-
- qry->commandType = CMD_DELETE;
-
- /* set up range table with just the result rel */
- qry->resultRelation = setTargetTable(pstate, stmt->relation,
- interpretInhOption(stmt->relation->inhOpt),
- true);
-
- qry->distinctClause = NIL;
-
- /* fix where clause */
- qual = transformWhereClause(pstate, stmt->whereClause);
-
- /* done building the range table and jointree */
- qry->rtable = pstate->p_rtable;
- qry->jointree = makeFromExpr(pstate->p_joinlist, qual);
-
- qry->hasSubLinks = pstate->p_hasSubLinks;
- qry->hasAggs = pstate->p_hasAggs;
- if (pstate->p_hasAggs)
- parseCheckAggregates(pstate, qry, qual);
-
- return qry;
-}
-
-/*
- * transformInsertStmt -
- * transform an Insert Statement
- */
-static Query *
-transformInsertStmt(ParseState *pstate, InsertStmt *stmt,
- List **extras_before, List **extras_after)
-{
- Query *qry = makeNode(Query);
- List *sub_rtable;
- List *sub_namespace;
- List *icolumns;
- List *attrnos;
- List *attnos;
- List *tl;
-
- qry->commandType = CMD_INSERT;
- pstate->p_is_insert = true;
-
- /*
- * If a non-nil rangetable/namespace was passed in, and we are doing
- * INSERT/SELECT, arrange to pass the rangetable/namespace down to the
- * SELECT. This can only happen if we are inside a CREATE RULE, and
- * in that case we want the rule's OLD and NEW rtable entries to
- * appear as part of the SELECT's rtable, not as outer references for
- * it. (Kluge!) The SELECT's joinlist is not affected however. We
- * must do this before adding the target table to the INSERT's rtable.
- */
- if (stmt->selectStmt)
- {
- sub_rtable = pstate->p_rtable;
- pstate->p_rtable = NIL;
- sub_namespace = pstate->p_namespace;
- pstate->p_namespace = NIL;
- }
- else
- {
- sub_rtable = NIL; /* not used, but keep compiler quiet */
- sub_namespace = NIL;
- }
-
- /*
- * Must get write lock on INSERT target table before scanning SELECT,
- * else we will grab the wrong kind of initial lock if the target
- * table is also mentioned in the SELECT part. Note that the target
- * table is not added to the joinlist or namespace.
- */
- qry->resultRelation = setTargetTable(pstate, stmt->relation,
- false, false);
-
- /*
- * Is it INSERT ... SELECT or INSERT ... VALUES?
- */
- if (stmt->selectStmt)
- {
- ParseState *sub_pstate = make_parsestate(pstate->parentParseState);
- Query *selectQuery;
- RangeTblEntry *rte;
- RangeTblRef *rtr;
-
- /*
- * Process the source SELECT.
- *
- * It is important that this be handled just like a standalone
- * SELECT; otherwise the behavior of SELECT within INSERT might be
- * different from a stand-alone SELECT. (Indeed, Postgres up
- * through 6.5 had bugs of just that nature...)
- */
- sub_pstate->p_rtable = sub_rtable;
- sub_pstate->p_namespace = sub_namespace;
-
- /*
- * Note: we are not expecting that extras_before and extras_after
- * are going to be used by the transformation of the SELECT statement.
- */
- selectQuery = transformStmt(sub_pstate, stmt->selectStmt,
- extras_before, extras_after);
-
- release_pstate_resources(sub_pstate);
- pfree(sub_pstate);
-
- Assert(IsA(selectQuery, Query));
- Assert(selectQuery->commandType == CMD_SELECT);
- if (selectQuery->into || selectQuery->isPortal)
- elog(ERROR, "INSERT ... SELECT may not specify INTO");
-
- /*
- * Make the source be a subquery in the INSERT's rangetable, and
- * add it to the INSERT's joinlist.
- */
- rte = addRangeTableEntryForSubquery(pstate,
- selectQuery,
- makeAlias("*SELECT*", NIL),
- true);
- rtr = makeNode(RangeTblRef);
- /* assume new rte is at end */
- rtr->rtindex = length(pstate->p_rtable);
- Assert(rte == rt_fetch(rtr->rtindex, pstate->p_rtable));
- pstate->p_joinlist = lappend(pstate->p_joinlist, rtr);
-
- /*
- * Generate a targetlist for the INSERT that selects all the
- * non-resjunk columns from the subquery. (We need this to be
- * separate from the subquery's tlist because we may add columns,
- * insert datatype coercions, etc.)
- *
- * HACK: constants in the INSERT's targetlist are copied up as-is
- * rather than being referenced as subquery outputs. This is
- * mainly to ensure that when we try to coerce them to the target
- * column's datatype, the right things happen for UNKNOWN
- * constants. Otherwise this fails: INSERT INTO foo SELECT 'bar',
- * ... FROM baz
- */
- qry->targetList = NIL;
- foreach(tl, selectQuery->targetList)
- {
- TargetEntry *tle = (TargetEntry *) lfirst(tl);
- Resdom *resnode = tle->resdom;
- Node *expr;
-
- if (resnode->resjunk)
- continue;
- if (tle->expr && IsA(tle->expr, Const))
- expr = tle->expr;
- else
- expr = (Node *) makeVar(rtr->rtindex,
- resnode->resno,
- resnode->restype,
- resnode->restypmod,
- 0);
- resnode = copyObject(resnode);
- resnode->resno = (AttrNumber) pstate->p_last_resno++;
- qry->targetList = lappend(qry->targetList,
- makeTargetEntry(resnode, expr));
- }
- }
- else
- {
- /*
- * For INSERT ... VALUES, transform the given list of values to
- * form a targetlist for the INSERT.
- */
- qry->targetList = transformTargetList(pstate, stmt->targetList);
- }
-
- /*
- * Now we are done with SELECT-like processing, and can get on with
- * transforming the target list to match the INSERT target columns.
- */
-
- /* Prepare to assign non-conflicting resnos to resjunk attributes */
- if (pstate->p_last_resno <= pstate->p_target_relation->rd_rel->relnatts)
- pstate->p_last_resno = pstate->p_target_relation->rd_rel->relnatts + 1;
-
- /* Validate stmt->cols list, or build default list if no list given */
- icolumns = checkInsertTargets(pstate, stmt->cols, &attrnos);
-
- /*
- * Prepare columns for assignment to target table.
- */
- attnos = attrnos;
- foreach(tl, qry->targetList)
- {
- TargetEntry *tle = (TargetEntry *) lfirst(tl);
- ResTarget *col;
-
- if (icolumns == NIL || attnos == NIL)
- elog(ERROR, "INSERT has more expressions than target columns");
- col = (ResTarget *) lfirst(icolumns);
-
- /*
- * When the value is to be set to the column default we can simply
- * drop it now and handle it later on using methods for missing
- * columns.
- */
- if (!IsA(tle, InsertDefault))
- {
- Assert(IsA(col, ResTarget));
- Assert(!tle->resdom->resjunk);
- updateTargetListEntry(pstate, tle, col->name, lfirsti(attnos),
- col->indirection);
- }
- else
- {
- icolumns = lremove(icolumns, icolumns);
- attnos = lremove(attnos, attnos);
- qry->targetList = lremove(tle, qry->targetList);
- }
-
- icolumns = lnext(icolumns);
- attnos = lnext(attnos);
- }
-
- /*
- * Ensure that the targetlist has the same number of entries
- * that were present in the columns list. Don't do the check
- * for select statements.
- */
- if (stmt->cols != NIL && (icolumns != NIL || attnos != NIL))
- elog(ERROR, "INSERT has more target columns than expressions");
-
- /* done building the range table and jointree */
- qry->rtable = pstate->p_rtable;
- qry->jointree = makeFromExpr(pstate->p_joinlist, NULL);
-
- qry->hasSubLinks = pstate->p_hasSubLinks;
- qry->hasAggs = pstate->p_hasAggs;
- if (pstate->p_hasAggs)
- parseCheckAggregates(pstate, qry, NULL);
-
- return qry;
-}
-
-/*
- * makeObjectName()
- *
- * Create a name for an implicitly created index, sequence, constraint, etc.
- *
- * The parameters are: the original table name, the original field name, and
- * a "type" string (such as "seq" or "pkey"). The field name and/or type
- * can be NULL if not relevant.
- *
- * The result is a palloc'd string.
- *
- * The basic result we want is "name1_name2_type", omitting "_name2" or
- * "_type" when those parameters are NULL. However, we must generate
- * a name with less than NAMEDATALEN characters! So, we truncate one or
- * both names if necessary to make a short-enough string. The type part
- * is never truncated (so it had better be reasonably short).
- *
- * To reduce the probability of collisions, we might someday add more
- * smarts to this routine, like including some "hash" characters computed
- * from the truncated characters. Currently it seems best to keep it simple,
- * so that the generated names are easily predictable by a person.
- */
-char *
-makeObjectName(char *name1, char *name2, char *typename)
-{
- char *name;
- int overhead = 0; /* chars needed for type and underscores */
- int availchars; /* chars available for name(s) */
- int name1chars; /* chars allocated to name1 */
- int name2chars; /* chars allocated to name2 */
- int ndx;
-
- name1chars = strlen(name1);
- if (name2)
- {
- name2chars = strlen(name2);
- overhead++; /* allow for separating underscore */
- }
- else
- name2chars = 0;
- if (typename)
- overhead += strlen(typename) + 1;
-
- availchars = NAMEDATALEN - 1 - overhead;
-
- /*
- * If we must truncate, preferentially truncate the longer name. This
- * logic could be expressed without a loop, but it's simple and
- * obvious as a loop.
- */
- while (name1chars + name2chars > availchars)
- {
- if (name1chars > name2chars)
- name1chars--;
- else
- name2chars--;
- }
-
-#ifdef MULTIBYTE
- if (name1)
- name1chars = pg_mbcliplen(name1, name1chars, name1chars);
- if (name2)
- name2chars = pg_mbcliplen(name2, name2chars, name2chars);
-#endif
-
- /* Now construct the string using the chosen lengths */
- name = palloc(name1chars + name2chars + overhead + 1);
- strncpy(name, name1, name1chars);
- ndx = name1chars;
- if (name2)
- {
- name[ndx++] = '_';
- strncpy(name + ndx, name2, name2chars);
- ndx += name2chars;
- }
- if (typename)
- {
- name[ndx++] = '_';
- strcpy(name + ndx, typename);
- }
- else
- name[ndx] = '\0';
-
- return name;
-}
-
-static char *
-CreateIndexName(char *table_name, char *column_name,
- char *label, List *indices)
-{
- int pass = 0;
- char *iname = NULL;
- List *ilist;
- char typename[NAMEDATALEN];
-
- /*
- * The type name for makeObjectName is label, or labelN if that's
- * necessary to prevent collisions among multiple indexes for the same
- * table. Note there is no check for collisions with already-existing
- * indexes, only among the indexes we're about to create now; this
- * ought to be improved someday.
- */
- strcpy(typename, label);
-
- for (;;)
- {
- iname = makeObjectName(table_name, column_name, typename);
-
- foreach(ilist, indices)
- {
- IndexStmt *index = lfirst(ilist);
-
- if (index->idxname != NULL &&
- strcmp(iname, index->idxname) == 0)
- break;
- }
- /* ran through entire list? then no name conflict found so done */
- if (ilist == NIL)
- break;
-
- /* found a conflict, so try a new name component */
- pfree(iname);
- sprintf(typename, "%s%d", label, ++pass);
- }
-
- return iname;
-}
-
-/*
- * transformCreateStmt -
- * transforms the "create table" statement
- * SQL92 allows constraints to be scattered all over, so thumb through
- * the columns and collect all constraints into one place.
- * If there are any implied indices (e.g. UNIQUE or PRIMARY KEY)
- * then expand those into multiple IndexStmt blocks.
- * - thomas 1997-12-02
- */
-static Query *
-transformCreateStmt(ParseState *pstate, CreateStmt *stmt,
- List **extras_before, List **extras_after)
-{
- CreateStmtContext cxt;
- Query *q;
- List *elements;
-
- cxt.stmtType = "CREATE TABLE";
- cxt.relation = stmt->relation;
- cxt.inhRelations = stmt->inhRelations;
- cxt.hasoids = stmt->hasoids;
- cxt.relOid = InvalidOid;
- cxt.columns = NIL;
- cxt.ckconstraints = NIL;
- cxt.fkconstraints = NIL;
- cxt.ixconstraints = NIL;
- cxt.blist = NIL;
- cxt.alist = NIL;
- cxt.pkey = NULL;
-
- /*
- * Run through each primary element in the table creation clause.
- * Separate column defs from constraints, and do preliminary analysis.
- */
- foreach(elements, stmt->tableElts)
- {
- Node *element = lfirst(elements);
-
- switch (nodeTag(element))
- {
- case T_ColumnDef:
- transformColumnDefinition(pstate, &cxt,
- (ColumnDef *) element);
- break;
-
- case T_Constraint:
- transformTableConstraint(pstate, &cxt,
- (Constraint *) element);
- break;
-
- case T_FkConstraint:
- /* No pre-transformation needed */
- cxt.fkconstraints = lappend(cxt.fkconstraints, element);
- break;
-
- default:
- elog(ERROR, "parser: unrecognized node (internal error)");
- }
- }
-
- Assert(stmt->constraints == NIL);
-
- /*
- * Postprocess constraints that give rise to index definitions.
- */
- transformIndexConstraints(pstate, &cxt);
-
- /*
- * Postprocess foreign-key constraints.
- */
- transformFKConstraints(pstate, &cxt);
-
- /*
- * Output results.
- */
- q = makeNode(Query);
- q->commandType = CMD_UTILITY;
- q->utilityStmt = (Node *) stmt;
- stmt->tableElts = cxt.columns;
- stmt->constraints = cxt.ckconstraints;
- *extras_before = nconc (*extras_before, cxt.blist);
- *extras_after = nconc (cxt.alist, *extras_after);
-
- return q;
-}
-
-static void
-transformColumnDefinition(ParseState *pstate, CreateStmtContext *cxt,
- ColumnDef *column)
-{
- bool is_serial;
- bool saw_nullable;
- Constraint *constraint;
- List *clist;
- Ident *key;
-
- cxt->columns = lappend(cxt->columns, column);
-
- /* Check for SERIAL pseudo-types */
- is_serial = false;
- if (length(column->typename->names) == 1)
- {
- char *typname = strVal(lfirst(column->typename->names));
-
- if (strcmp(typname, "serial") == 0 ||
- strcmp(typname, "serial4") == 0)
- {
- is_serial = true;
- column->typename->names = NIL;
- column->typename->typeid = INT4OID;
- }
- else if (strcmp(typname, "bigserial") == 0 ||
- strcmp(typname, "serial8") == 0)
- {
- is_serial = true;
- column->typename->names = NIL;
- column->typename->typeid = INT8OID;
- }
- }
-
- /* Do necessary work on the column type declaration */
- transformColumnType(pstate, column);
-
- /* Special actions for SERIAL pseudo-types */
- if (is_serial)
- {
- char *sname;
- char *snamespace;
- char *qstring;
- A_Const *snamenode;
- FuncCall *funccallnode;
- CreateSeqStmt *seqstmt;
-
- /*
- * Determine name and namespace to use for the sequence.
- */
- sname = makeObjectName(cxt->relation->relname, column->colname, "seq");
- snamespace = get_namespace_name(RangeVarGetCreationNamespace(cxt->relation));
-
- elog(NOTICE, "%s will create implicit sequence '%s' for SERIAL column '%s.%s'",
- cxt->stmtType, sname, cxt->relation->relname, column->colname);
-
- /*
- * Build a CREATE SEQUENCE command to create the sequence object,
- * and add it to the list of things to be done before this
- * CREATE/ALTER TABLE.
- */
- seqstmt = makeNode(CreateSeqStmt);
- seqstmt->sequence = makeRangeVar(snamespace, sname);
- seqstmt->options = NIL;
-
- cxt->blist = lappend(cxt->blist, seqstmt);
-
- /*
- * Create appropriate constraints for SERIAL. We do this in full,
- * rather than shortcutting, so that we will detect any
- * conflicting constraints the user wrote (like a different
- * DEFAULT).
- *
- * Create an expression tree representing the function call
- * nextval('"sequencename"')
- */
- qstring = quote_qualified_identifier(snamespace, sname);
- snamenode = makeNode(A_Const);
- snamenode->val.type = T_String;
- snamenode->val.val.str = qstring;
- funccallnode = makeNode(FuncCall);
- funccallnode->funcname = SystemFuncName("nextval");
- funccallnode->args = makeList1(snamenode);
- funccallnode->agg_star = false;
- funccallnode->agg_distinct = false;
-
- constraint = makeNode(Constraint);
- constraint->contype = CONSTR_DEFAULT;
- constraint->name = sname;
- constraint->raw_expr = (Node *) funccallnode;
- constraint->cooked_expr = NULL;
- constraint->keys = NIL;
- column->constraints = lappend(column->constraints, constraint);
-
- constraint = makeNode(Constraint);
- constraint->contype = CONSTR_UNIQUE;
- constraint->name = NULL; /* assign later */
- column->constraints = lappend(column->constraints, constraint);
-
- constraint = makeNode(Constraint);
- constraint->contype = CONSTR_NOTNULL;
- column->constraints = lappend(column->constraints, constraint);
- }
-
- /* Process column constraints, if any... */
- transformConstraintAttrs(column->constraints);
-
- saw_nullable = false;
-
- foreach(clist, column->constraints)
- {
- constraint = lfirst(clist);
-
- /*
- * If this column constraint is a FOREIGN KEY constraint, then we
- * fill in the current attributes name and throw it into the list
- * of FK constraints to be processed later.
- */
- if (IsA(constraint, FkConstraint))
- {
- FkConstraint *fkconstraint = (FkConstraint *) constraint;
- Ident *id = makeNode(Ident);
-
- id->name = column->colname;
- fkconstraint->fk_attrs = makeList1(id);
-
- cxt->fkconstraints = lappend(cxt->fkconstraints, fkconstraint);
- continue;
- }
-
- Assert(IsA(constraint, Constraint));
-
- switch (constraint->contype)
- {
- case CONSTR_NULL:
- if (saw_nullable && column->is_not_null)
- elog(ERROR, "%s/(NOT) NULL conflicting declaration for '%s.%s'",
- cxt->stmtType, (cxt->relation)->relname, column->colname);
- column->is_not_null = FALSE;
- saw_nullable = true;
- break;
-
- case CONSTR_NOTNULL:
- if (saw_nullable && !column->is_not_null)
- elog(ERROR, "%s/(NOT) NULL conflicting declaration for '%s.%s'",
- cxt->stmtType, (cxt->relation)->relname, column->colname);
- column->is_not_null = TRUE;
- saw_nullable = true;
- break;
-
- case CONSTR_DEFAULT:
- if (column->raw_default != NULL)
- elog(ERROR, "%s/DEFAULT multiple values specified for '%s.%s'",
- cxt->stmtType, (cxt->relation)->relname, column->colname);
- column->raw_default = constraint->raw_expr;
- Assert(constraint->cooked_expr == NULL);
- break;
-
- case CONSTR_PRIMARY:
- if (constraint->name == NULL)
- constraint->name = makeObjectName((cxt->relation)->relname,
- NULL,
- "pkey");
- if (constraint->keys == NIL)
- {
- key = makeNode(Ident);
- key->name = pstrdup(column->colname);
- constraint->keys = makeList1(key);
- }
- cxt->ixconstraints = lappend(cxt->ixconstraints, constraint);
- break;
-
- case CONSTR_UNIQUE:
- if (constraint->name == NULL)
- constraint->name = makeObjectName((cxt->relation)->relname,
- column->colname,
- "key");
- if (constraint->keys == NIL)
- {
- key = makeNode(Ident);
- key->name = pstrdup(column->colname);
- constraint->keys = makeList1(key);
- }
- cxt->ixconstraints = lappend(cxt->ixconstraints, constraint);
- break;
-
- case CONSTR_CHECK:
- if (constraint->name == NULL)
- constraint->name = makeObjectName((cxt->relation)->relname,
- column->colname,
- NULL);
- cxt->ckconstraints = lappend(cxt->ckconstraints, constraint);
- break;
-
- case CONSTR_ATTR_DEFERRABLE:
- case CONSTR_ATTR_NOT_DEFERRABLE:
- case CONSTR_ATTR_DEFERRED:
- case CONSTR_ATTR_IMMEDIATE:
- /* transformConstraintAttrs took care of these */
- break;
-
- default:
- elog(ERROR, "parser: unrecognized constraint (internal error)");
- break;
- }
- }
-}
-
-static void
-transformTableConstraint(ParseState *pstate, CreateStmtContext *cxt,
- Constraint *constraint)
-{
- switch (constraint->contype)
- {
- case CONSTR_PRIMARY:
- if (constraint->name == NULL)
- constraint->name = makeObjectName((cxt->relation)->relname,
- NULL,
- "pkey");
- cxt->ixconstraints = lappend(cxt->ixconstraints, constraint);
- break;
-
- case CONSTR_UNIQUE:
- cxt->ixconstraints = lappend(cxt->ixconstraints, constraint);
- break;
-
- case CONSTR_CHECK:
- cxt->ckconstraints = lappend(cxt->ckconstraints, constraint);
- break;
-
- case CONSTR_NULL:
- case CONSTR_NOTNULL:
- case CONSTR_DEFAULT:
- case CONSTR_ATTR_DEFERRABLE:
- case CONSTR_ATTR_NOT_DEFERRABLE:
- case CONSTR_ATTR_DEFERRED:
- case CONSTR_ATTR_IMMEDIATE:
- elog(ERROR, "parser: illegal context for constraint (internal error)");
- break;
-
- default:
- elog(ERROR, "parser: unrecognized constraint (internal error)");
- break;
- }
-}
-
-static void
-transformIndexConstraints(ParseState *pstate, CreateStmtContext *cxt)
-{
- List *listptr;
- List *keys;
- IndexStmt *index;
- IndexElem *iparam;
- ColumnDef *column;
- List *columns;
- List *indexlist = NIL;
-
- /*
- * Run through the constraints that need to generate an index. For
- * PRIMARY KEY, mark each column as NOT NULL and create an index. For
- * UNIQUE, create an index as for PRIMARY KEY, but do not insist on
- * NOT NULL.
- */
- foreach(listptr, cxt->ixconstraints)
- {
- Constraint *constraint = lfirst(listptr);
-
- Assert(IsA(constraint, Constraint));
- Assert((constraint->contype == CONSTR_PRIMARY)
- || (constraint->contype == CONSTR_UNIQUE));
-
- index = makeNode(IndexStmt);
-
- index->unique = true;
- index->primary = (constraint->contype == CONSTR_PRIMARY);
- if (index->primary)
- {
- /* In ALTER TABLE case, a primary index might already exist */
- if (cxt->pkey != NULL ||
- (OidIsValid(cxt->relOid) &&
- relationHasPrimaryKey(cxt->relOid)))
- elog(ERROR, "%s / PRIMARY KEY multiple primary keys"
- " for table '%s' are not allowed",
- cxt->stmtType, (cxt->relation)->relname);
- cxt->pkey = index;
- }
-
- if (constraint->name != NULL)
- index->idxname = pstrdup(constraint->name);
- else if (constraint->contype == CONSTR_PRIMARY)
- index->idxname = makeObjectName((cxt->relation)->relname, NULL, "pkey");
- else
- index->idxname = NULL; /* will set it later */
-
- index->relation = cxt->relation;
- index->accessMethod = DEFAULT_INDEX_TYPE;
- index->indexParams = NIL;
- index->whereClause = NULL;
-
- /*
- * Make sure referenced keys exist. If we are making a PRIMARY
- * KEY index, also make sure they are NOT NULL.
- */
- foreach(keys, constraint->keys)
- {
- Ident *key = (Ident *) lfirst(keys);
- bool found = false;
-
- Assert(IsA(key, Ident));
- column = NULL;
- foreach(columns, cxt->columns)
- {
- column = lfirst(columns);
- Assert(IsA(column, ColumnDef));
- if (strcmp(column->colname, key->name) == 0)
- {
- found = true;
- break;
- }
- }
- if (found)
- {
- /* found column in the new table; force it to be NOT NULL */
- if (constraint->contype == CONSTR_PRIMARY)
- column->is_not_null = TRUE;
- }
- else if (SystemAttributeByName(key->name, cxt->hasoids) != NULL)
- {
- /*
- * column will be a system column in the new table, so
- * accept it. System columns can't ever be null, so no
- * need to worry about PRIMARY/NOT NULL constraint.
- */
- found = true;
- }
- else if (cxt->inhRelations)
- {
- /* try inherited tables */
- List *inher;
-
- foreach(inher, cxt->inhRelations)
- {
- RangeVar *inh = lfirst(inher);
- Relation rel;
- int count;
-
- Assert(IsA(inh, RangeVar));
- rel = heap_openrv(inh, AccessShareLock);
- if (rel->rd_rel->relkind != RELKIND_RELATION)
- elog(ERROR, "inherited table \"%s\" is not a relation",
- inh->relname);
- for (count = 0; count < rel->rd_att->natts; count++)
- {
- Form_pg_attribute inhattr = rel->rd_att->attrs[count];
- char *inhname = NameStr(inhattr->attname);
-
- if (strcmp(key->name, inhname) == 0)
- {
- found = true;
-
- /*
- * If the column is inherited, we currently
- * have no easy way to force it to be NOT
- * NULL. Only way I can see to fix this would
- * be to convert the inherited-column info to
- * ColumnDef nodes before we reach this point,
- * and then create the table from those nodes
- * rather than referencing the parent tables
- * later. That would likely be cleaner, but
- * too much work to contemplate right now.
- * Instead, raise an error if the inherited
- * column won't be NOT NULL. (Would a WARNING
- * be more reasonable?)
- */
- if (constraint->contype == CONSTR_PRIMARY &&
- !inhattr->attnotnull)
- elog(ERROR, "inherited attribute \"%s\" cannot be a PRIMARY KEY because it is not marked NOT NULL",
- inhname);
- break;
- }
- }
- heap_close(rel, NoLock);
- if (found)
- break;
- }
- }
- else if (OidIsValid(cxt->relOid))
- {
- /* ALTER TABLE case: does column already exist? */
- HeapTuple atttuple;
-
- atttuple = SearchSysCache(ATTNAME,
- ObjectIdGetDatum(cxt->relOid),
- PointerGetDatum(key->name),
- 0, 0);
- if (HeapTupleIsValid(atttuple))
- {
- found = true;
-
- /*
- * We require pre-existing column to be already marked
- * NOT NULL.
- */
- if (constraint->contype == CONSTR_PRIMARY &&
- !((Form_pg_attribute) GETSTRUCT(atttuple))->attnotnull)
- elog(ERROR, "Existing attribute \"%s\" cannot be a PRIMARY KEY because it is not marked NOT NULL",
- key->name);
- ReleaseSysCache(atttuple);
- }
- }
-
- if (!found)
- elog(ERROR, "%s: column \"%s\" named in key does not exist",
- cxt->stmtType, key->name);
-
- /* Check for PRIMARY KEY(foo, foo) */
- foreach(columns, index->indexParams)
- {
- iparam = (IndexElem *) lfirst(columns);
- if (iparam->name && strcmp(key->name, iparam->name) == 0)
- elog(ERROR, "%s: column \"%s\" appears twice in %s constraint",
- cxt->stmtType, key->name,
- index->primary ? "PRIMARY KEY" : "UNIQUE");
- }
-
- /* OK, add it to the index definition */
- iparam = makeNode(IndexElem);
- iparam->name = pstrdup(key->name);
- iparam->funcname = NIL;
- iparam->args = NIL;
- iparam->opclass = NIL;
- index->indexParams = lappend(index->indexParams, iparam);
- }
-
- indexlist = lappend(indexlist, index);
- }
-
- /*
- * Scan the index list and remove any redundant index specifications.
- * This can happen if, for instance, the user writes SERIAL PRIMARY
- * KEY or SERIAL UNIQUE. A strict reading of SQL92 would suggest
- * raising an error instead, but that strikes me as too
- * anal-retentive. - tgl 2001-02-14
- *
- * XXX in ALTER TABLE case, it'd be nice to look for duplicate
- * pre-existing indexes, too.
- */
- cxt->alist = NIL;
- if (cxt->pkey != NULL)
- {
- /* Make sure we keep the PKEY index in preference to others... */
- cxt->alist = makeList1(cxt->pkey);
- }
- while (indexlist != NIL)
- {
- index = lfirst(indexlist);
-
- /* if it's pkey, it's already in cxt->alist */
- if (index != cxt->pkey)
- {
- bool keep = true;
- List *priorlist;
-
- foreach(priorlist, cxt->alist)
- {
- IndexStmt *priorindex = lfirst(priorlist);
-
- if (equal(index->indexParams, priorindex->indexParams))
- {
- /*
- * If the prior index is as yet unnamed, and this one
- * is named, then transfer the name to the prior
- * index. This ensures that if we have named and
- * unnamed constraints, we'll use (at least one of)
- * the names for the index.
- */
- if (priorindex->idxname == NULL)
- priorindex->idxname = index->idxname;
- keep = false;
- break;
- }
- }
-
- if (keep)
- cxt->alist = lappend(cxt->alist, index);
- }
-
- indexlist = lnext(indexlist);
- }
-
- /*
- * Finally, select unique names for all not-previously-named indices,
- * and display WARNING messages.
- *
- * XXX in ALTER TABLE case, we fail to consider name collisions against
- * pre-existing indexes.
- */
- foreach(indexlist, cxt->alist)
- {
- index = lfirst(indexlist);
-
- if (index->idxname == NULL && index->indexParams != NIL)
- {
- iparam = lfirst(index->indexParams);
- index->idxname = CreateIndexName(cxt->relation->relname,
- iparam->name ? iparam->name :
- strVal(llast(iparam->funcname)),
- "key", cxt->alist);
- }
- if (index->idxname == NULL) /* should not happen */
- elog(ERROR, "%s: failed to make implicit index name",
- cxt->stmtType);
-
- elog(NOTICE, "%s / %s%s will create implicit index '%s' for table '%s'",
- cxt->stmtType,
- (strcmp(cxt->stmtType, "ALTER TABLE") == 0) ? "ADD " : "",
- (index->primary ? "PRIMARY KEY" : "UNIQUE"),
- index->idxname, cxt->relation->relname);
- }
-}
-
-static void
-transformFKConstraints(ParseState *pstate, CreateStmtContext *cxt)
-{
- CreateTrigStmt *fk_trigger;
- List *fkactions = NIL;
- List *fkclist;
- List *fk_attr;
- List *pk_attr;
- Ident *id;
- Oid pktypoid[INDEX_MAX_KEYS];
- Oid fktypoid[INDEX_MAX_KEYS];
- int i;
-
- if (cxt->fkconstraints == NIL)
- return;
-
- elog(NOTICE, "%s will create implicit trigger(s) for FOREIGN KEY check(s)",
- cxt->stmtType);
-
- foreach(fkclist, cxt->fkconstraints)
- {
- FkConstraint *fkconstraint = (FkConstraint *) lfirst(fkclist);
- int attnum;
- List *fkattrs;
-
- /*
- * If the constraint has no name, set it to <unnamed>
- */
- if (fkconstraint->constr_name == NULL)
- fkconstraint->constr_name = "<unnamed>";
-
- for (attnum = 0; attnum < INDEX_MAX_KEYS; attnum++)
- pktypoid[attnum] = fktypoid[attnum] = InvalidOid;
-
- /*
- * Look up the referencing attributes to make sure they exist (or
- * will exist) in this table, and remember their type OIDs.
- */
- attnum = 0;
- foreach(fkattrs, fkconstraint->fk_attrs)
- {
- Ident *fkattr = lfirst(fkattrs);
-
- if (attnum >= INDEX_MAX_KEYS)
- elog(ERROR, "Can only have %d keys in a foreign key",
- INDEX_MAX_KEYS);
- fktypoid[attnum++] = transformFkeyGetColType(cxt,
- fkattr->name);
- }
-
- /*
- * If the attribute list for the referenced table was omitted,
- * lookup the definition of the primary key.
- */
- if (fkconstraint->pk_attrs == NIL)
- {
- if (strcmp(fkconstraint->pktable->relname, (cxt->relation)->relname) != 0)
- transformFkeyGetPrimaryKey(fkconstraint, pktypoid);
- else if (cxt->pkey != NULL)
- {
- /* Use the to-be-created primary key */
- List *attr;
-
- attnum = 0;
- foreach(attr, cxt->pkey->indexParams)
- {
- IndexElem *ielem = lfirst(attr);
- Ident *pkattr = (Ident *) makeNode(Ident);
-
- Assert(ielem->name); /* no func index here */
- pkattr->name = pstrdup(ielem->name);
- fkconstraint->pk_attrs = lappend(fkconstraint->pk_attrs,
- pkattr);
- if (attnum >= INDEX_MAX_KEYS)
- elog(ERROR, "Can only have %d keys in a foreign key",
- INDEX_MAX_KEYS);
- pktypoid[attnum++] = transformFkeyGetColType(cxt,
- ielem->name);
- }
- }
- else
- {
- /* In ALTER TABLE case, primary key may already exist */
- if (OidIsValid(cxt->relOid))
- transformFkeyGetPrimaryKey(fkconstraint, pktypoid);
- else
- elog(ERROR, "PRIMARY KEY for referenced table \"%s\" not found",
- fkconstraint->pktable->relname);
- }
- }
- else
- {
- /* Validate the specified referenced key list */
- if (strcmp(fkconstraint->pktable->relname, (cxt->relation)->relname) != 0)
- transformFkeyCheckAttrs(fkconstraint, pktypoid);
- else
- {
- /* Look for a matching new unique/primary constraint */
- List *index;
- bool found = false;
-
- foreach(index, cxt->alist)
- {
- IndexStmt *ind = lfirst(index);
- List *pkattrs;
-
- if (!ind->unique)
- continue;
- if (length(ind->indexParams) !=
- length(fkconstraint->pk_attrs))
- continue;
- attnum = 0;
- foreach(pkattrs, fkconstraint->pk_attrs)
- {
- Ident *pkattr = lfirst(pkattrs);
- List *indparms;
-
- found = false;
- foreach(indparms, ind->indexParams)
- {
- IndexElem *indparm = lfirst(indparms);
-
- if (indparm->name &&
- strcmp(indparm->name, pkattr->name) == 0)
- {
- found = true;
- break;
- }
- }
- if (!found)
- break;
- if (attnum >= INDEX_MAX_KEYS)
- elog(ERROR, "Can only have %d keys in a foreign key",
- INDEX_MAX_KEYS);
- pktypoid[attnum++] = transformFkeyGetColType(cxt,
- pkattr->name);
- }
- if (found)
- break;
- }
- if (!found)
- {
- /*
- * In ALTER TABLE case, such an index may already
- * exist
- */
- if (OidIsValid(cxt->relOid))
- transformFkeyCheckAttrs(fkconstraint, pktypoid);
- else
- elog(ERROR, "UNIQUE constraint matching given keys for referenced table \"%s\" not found",
- fkconstraint->pktable->relname);
- }
- }
- }
-
- /* Be sure referencing and referenced column types are comparable */
- for (i = 0; i < INDEX_MAX_KEYS && fktypoid[i] != 0; i++)
- {
- /*
- * fktypoid[i] is the foreign key table's i'th element's type
- * pktypoid[i] is the primary key table's i'th element's type
- *
- * We let oper() do our work for us, including elog(ERROR) if
- * the types don't compare with =
- */
- Operator o = oper(makeList1(makeString("=")),
- fktypoid[i], pktypoid[i], false);
-
- ReleaseSysCache(o);
- }
-
- /*
- * Build a CREATE CONSTRAINT TRIGGER statement for the CHECK
- * action.
- */
- fk_trigger = (CreateTrigStmt *) makeNode(CreateTrigStmt);
- fk_trigger->trigname = fkconstraint->constr_name;
- fk_trigger->relation = cxt->relation;
- fk_trigger->funcname = SystemFuncName("RI_FKey_check_ins");
- fk_trigger->before = false;
- fk_trigger->row = true;
- fk_trigger->actions[0] = 'i';
- fk_trigger->actions[1] = 'u';
- fk_trigger->actions[2] = '\0';
- fk_trigger->lang = NULL;
- fk_trigger->text = NULL;
-
- fk_trigger->attr = NIL;
- fk_trigger->when = NULL;
- fk_trigger->isconstraint = true;
- fk_trigger->deferrable = fkconstraint->deferrable;
- fk_trigger->initdeferred = fkconstraint->initdeferred;
- fk_trigger->constrrel = fkconstraint->pktable;
-
- fk_trigger->args = NIL;
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(fkconstraint->constr_name));
- fk_trigger->args = lappend(fk_trigger->args,
- makeString((cxt->relation)->relname));
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(fkconstraint->pktable->relname));
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(fkconstraint->match_type));
- fk_attr = fkconstraint->fk_attrs;
- pk_attr = fkconstraint->pk_attrs;
- if (length(fk_attr) != length(pk_attr))
- elog(ERROR, "number of key attributes in referenced table must be equal to foreign key"
- "\n\tIllegal FOREIGN KEY definition references \"%s\"",
- fkconstraint->pktable->relname);
-
- while (fk_attr != NIL)
- {
- id = (Ident *) lfirst(fk_attr);
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(id->name));
-
- id = (Ident *) lfirst(pk_attr);
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(id->name));
-
- fk_attr = lnext(fk_attr);
- pk_attr = lnext(pk_attr);
- }
-
- fkactions = lappend(fkactions, (Node *) fk_trigger);
-
- /*
- * Build a CREATE CONSTRAINT TRIGGER statement for the ON DELETE
- * action fired on the PK table !!!
- */
- fk_trigger = (CreateTrigStmt *) makeNode(CreateTrigStmt);
- fk_trigger->trigname = fkconstraint->constr_name;
- fk_trigger->relation = fkconstraint->pktable;
- fk_trigger->before = false;
- fk_trigger->row = true;
- fk_trigger->actions[0] = 'd';
- fk_trigger->actions[1] = '\0';
- fk_trigger->lang = NULL;
- fk_trigger->text = NULL;
-
- fk_trigger->attr = NIL;
- fk_trigger->when = NULL;
- fk_trigger->isconstraint = true;
- fk_trigger->deferrable = fkconstraint->deferrable;
- fk_trigger->initdeferred = fkconstraint->initdeferred;
- fk_trigger->constrrel = cxt->relation;
- switch ((fkconstraint->actions & FKCONSTR_ON_DELETE_MASK)
- >> FKCONSTR_ON_DELETE_SHIFT)
- {
- case FKCONSTR_ON_KEY_NOACTION:
- fk_trigger->funcname = SystemFuncName("RI_FKey_noaction_del");
- break;
- case FKCONSTR_ON_KEY_RESTRICT:
- fk_trigger->deferrable = false;
- fk_trigger->initdeferred = false;
- fk_trigger->funcname = SystemFuncName("RI_FKey_restrict_del");
- break;
- case FKCONSTR_ON_KEY_CASCADE:
- fk_trigger->funcname = SystemFuncName("RI_FKey_cascade_del");
- break;
- case FKCONSTR_ON_KEY_SETNULL:
- fk_trigger->funcname = SystemFuncName("RI_FKey_setnull_del");
- break;
- case FKCONSTR_ON_KEY_SETDEFAULT:
- fk_trigger->funcname = SystemFuncName("RI_FKey_setdefault_del");
- break;
- default:
- elog(ERROR, "Only one ON DELETE action can be specified for FOREIGN KEY constraint");
- break;
- }
-
- fk_trigger->args = NIL;
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(fkconstraint->constr_name));
- fk_trigger->args = lappend(fk_trigger->args,
- makeString((cxt->relation)->relname));
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(fkconstraint->pktable->relname));
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(fkconstraint->match_type));
- fk_attr = fkconstraint->fk_attrs;
- pk_attr = fkconstraint->pk_attrs;
- while (fk_attr != NIL)
- {
- id = (Ident *) lfirst(fk_attr);
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(id->name));
-
- id = (Ident *) lfirst(pk_attr);
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(id->name));
-
- fk_attr = lnext(fk_attr);
- pk_attr = lnext(pk_attr);
- }
-
- fkactions = lappend(fkactions, (Node *) fk_trigger);
-
- /*
- * Build a CREATE CONSTRAINT TRIGGER statement for the ON UPDATE
- * action fired on the PK table !!!
- */
- fk_trigger = (CreateTrigStmt *) makeNode(CreateTrigStmt);
- fk_trigger->trigname = fkconstraint->constr_name;
- fk_trigger->relation = fkconstraint->pktable;
- fk_trigger->before = false;
- fk_trigger->row = true;
- fk_trigger->actions[0] = 'u';
- fk_trigger->actions[1] = '\0';
- fk_trigger->lang = NULL;
- fk_trigger->text = NULL;
-
- fk_trigger->attr = NIL;
- fk_trigger->when = NULL;
- fk_trigger->isconstraint = true;
- fk_trigger->deferrable = fkconstraint->deferrable;
- fk_trigger->initdeferred = fkconstraint->initdeferred;
- fk_trigger->constrrel = cxt->relation;
- switch ((fkconstraint->actions & FKCONSTR_ON_UPDATE_MASK)
- >> FKCONSTR_ON_UPDATE_SHIFT)
- {
- case FKCONSTR_ON_KEY_NOACTION:
- fk_trigger->funcname = SystemFuncName("RI_FKey_noaction_upd");
- break;
- case FKCONSTR_ON_KEY_RESTRICT:
- fk_trigger->deferrable = false;
- fk_trigger->initdeferred = false;
- fk_trigger->funcname = SystemFuncName("RI_FKey_restrict_upd");
- break;
- case FKCONSTR_ON_KEY_CASCADE:
- fk_trigger->funcname = SystemFuncName("RI_FKey_cascade_upd");
- break;
- case FKCONSTR_ON_KEY_SETNULL:
- fk_trigger->funcname = SystemFuncName("RI_FKey_setnull_upd");
- break;
- case FKCONSTR_ON_KEY_SETDEFAULT:
- fk_trigger->funcname = SystemFuncName("RI_FKey_setdefault_upd");
- break;
- default:
- elog(ERROR, "Only one ON UPDATE action can be specified for FOREIGN KEY constraint");
- break;
- }
-
- fk_trigger->args = NIL;
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(fkconstraint->constr_name));
- fk_trigger->args = lappend(fk_trigger->args,
- makeString((cxt->relation)->relname));
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(fkconstraint->pktable->relname));
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(fkconstraint->match_type));
- fk_attr = fkconstraint->fk_attrs;
- pk_attr = fkconstraint->pk_attrs;
- while (fk_attr != NIL)
- {
- id = (Ident *) lfirst(fk_attr);
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(id->name));
-
- id = (Ident *) lfirst(pk_attr);
- fk_trigger->args = lappend(fk_trigger->args,
- makeString(id->name));
-
- fk_attr = lnext(fk_attr);
- pk_attr = lnext(pk_attr);
- }
-
- fkactions = lappend(fkactions, (Node *) fk_trigger);
- }
-
- /*
- * Attach completed list of extra actions to cxt->alist. We cannot do
- * this earlier, because we assume above that cxt->alist still holds
- * only IndexStmts.
- */
- cxt->alist = nconc(cxt->alist, fkactions);
-}
-
-/*
- * transformIndexStmt -
- * transforms the qualification of the index statement
- */
-static Query *
-transformIndexStmt(ParseState *pstate, IndexStmt *stmt)
-{
- Query *qry;
- RangeTblEntry *rte;
-
- qry = makeNode(Query);
- qry->commandType = CMD_UTILITY;
-
- /* take care of the where clause */
- if (stmt->whereClause)
- {
- /*
- * Put the parent table into the rtable so that the WHERE clause
- * can refer to its fields without qualification. Note that this
- * only works if the parent table already exists --- so we can't
- * easily support predicates on indexes created implicitly by
- * CREATE TABLE. Fortunately, that's not necessary.
- */
- rte = addRangeTableEntry(pstate, stmt->relation, NULL, false, true);
-
- /* no to join list, yes to namespace */
- addRTEtoQuery(pstate, rte, false, true);
-
- stmt->whereClause = transformWhereClause(pstate, stmt->whereClause);
- }
-
- qry->hasSubLinks = pstate->p_hasSubLinks;
- stmt->rangetable = pstate->p_rtable;
-
- qry->utilityStmt = (Node *) stmt;
-
- return qry;
-}
-
-/*
- * transformRuleStmt -
- * transform a Create Rule Statement. The actions is a list of parse
- * trees which is transformed into a list of query trees.
- */
-static Query *
-transformRuleStmt(ParseState *pstate, RuleStmt *stmt,
- List **extras_before, List **extras_after)
-{
- Query *qry;
- RangeTblEntry *oldrte;
- RangeTblEntry *newrte;
-
- qry = makeNode(Query);
- qry->commandType = CMD_UTILITY;
- qry->utilityStmt = (Node *) stmt;
-
- /*
- * To avoid deadlock, make sure the first thing we do is grab
- * AccessExclusiveLock on the target relation. This will be needed by
- * DefineQueryRewrite(), and we don't want to grab a lesser lock
- * beforehand. We don't need to hold a refcount on the relcache
- * entry, however.
- */
- heap_close(heap_openrv(stmt->relation, AccessExclusiveLock),
- NoLock);
-
- /*
- * NOTE: 'OLD' must always have a varno equal to 1 and 'NEW' equal to
- * 2. Set up their RTEs in the main pstate for use in parsing the
- * rule qualification.
- */
- Assert(pstate->p_rtable == NIL);
- oldrte = addRangeTableEntry(pstate, stmt->relation,
- makeAlias("*OLD*", NIL),
- false, true);
- newrte = addRangeTableEntry(pstate, stmt->relation,
- makeAlias("*NEW*", NIL),
- false, true);
- /* Must override addRangeTableEntry's default access-check flags */
- oldrte->checkForRead = false;
- newrte->checkForRead = false;
-
- /*
- * They must be in the namespace too for lookup purposes, but only add
- * the one(s) that are relevant for the current kind of rule. In an
- * UPDATE rule, quals must refer to OLD.field or NEW.field to be
- * unambiguous, but there's no need to be so picky for INSERT &
- * DELETE. (Note we marked the RTEs "inFromCl = true" above to allow
- * unqualified references to their fields.) We do not add them to the
- * joinlist.
- */
- switch (stmt->event)
- {
- case CMD_SELECT:
- addRTEtoQuery(pstate, oldrte, false, true);
- break;
- case CMD_UPDATE:
- addRTEtoQuery(pstate, oldrte, false, true);
- addRTEtoQuery(pstate, newrte, false, true);
- break;
- case CMD_INSERT:
- addRTEtoQuery(pstate, newrte, false, true);
- break;
- case CMD_DELETE:
- addRTEtoQuery(pstate, oldrte, false, true);
- break;
- default:
- elog(ERROR, "transformRuleStmt: unexpected event type %d",
- (int) stmt->event);
- break;
- }
-
- /* take care of the where clause */
- stmt->whereClause = transformWhereClause(pstate, stmt->whereClause);
-
- if (length(pstate->p_rtable) != 2) /* naughty, naughty... */
- elog(ERROR, "Rule WHERE condition may not contain references to other relations");
-
- /* save info about sublinks in where clause */
- qry->hasSubLinks = pstate->p_hasSubLinks;
-
- /*
- * 'instead nothing' rules with a qualification need a query
- * rangetable so the rewrite handler can add the negated rule
- * qualification to the original query. We create a query with the new
- * command type CMD_NOTHING here that is treated specially by the
- * rewrite system.
- */
- if (stmt->actions == NIL)
- {
- Query *nothing_qry = makeNode(Query);
-
- nothing_qry->commandType = CMD_NOTHING;
- nothing_qry->rtable = pstate->p_rtable;
- nothing_qry->jointree = makeFromExpr(NIL, NULL); /* no join wanted */
-
- stmt->actions = makeList1(nothing_qry);
- }
- else
- {
- List *oldactions;
- List *newactions = NIL;
-
- /*
- * transform each statement, like parse_analyze()
- */
- foreach(oldactions, stmt->actions)
- {
- Node *action = (Node *) lfirst(oldactions);
- ParseState *sub_pstate = make_parsestate(pstate->parentParseState);
- Query *sub_qry,
- *top_subqry;
- bool has_old,
- has_new;
-
- /*
- * Set up OLD/NEW in the rtable for this statement. The
- * entries are marked not inFromCl because we don't want them
- * to be referred to by unqualified field names nor "*" in the
- * rule actions. We must add them to the namespace, however,
- * or they won't be accessible at all. We decide later
- * whether to put them in the joinlist.
- */
- oldrte = addRangeTableEntry(sub_pstate, stmt->relation,
- makeAlias("*OLD*", NIL),
- false, false);
- newrte = addRangeTableEntry(sub_pstate, stmt->relation,
- makeAlias("*NEW*", NIL),
- false, false);
- oldrte->checkForRead = false;
- newrte->checkForRead = false;
- addRTEtoQuery(sub_pstate, oldrte, false, true);
- addRTEtoQuery(sub_pstate, newrte, false, true);
-
- /* Transform the rule action statement */
- top_subqry = transformStmt(sub_pstate, action,
- extras_before, extras_after);
-
- /*
- * We cannot support utility-statement actions (eg NOTIFY)
- * with nonempty rule WHERE conditions, because there's no way
- * to make the utility action execute conditionally.
- */
- if (top_subqry->commandType == CMD_UTILITY &&
- stmt->whereClause != NULL)
- elog(ERROR, "Rules with WHERE conditions may only have SELECT, INSERT, UPDATE, or DELETE actions");
-
- /*
- * If the action is INSERT...SELECT, OLD/NEW have been pushed
- * down into the SELECT, and that's what we need to look at.
- * (Ugly kluge ... try to fix this when we redesign
- * querytrees.)
- */
- sub_qry = getInsertSelectQuery(top_subqry, NULL);
-
- /*
- * Validate action's use of OLD/NEW, qual too
- */
- has_old =
- rangeTableEntry_used((Node *) sub_qry, PRS2_OLD_VARNO, 0) ||
- rangeTableEntry_used(stmt->whereClause, PRS2_OLD_VARNO, 0);
- has_new =
- rangeTableEntry_used((Node *) sub_qry, PRS2_NEW_VARNO, 0) ||
- rangeTableEntry_used(stmt->whereClause, PRS2_NEW_VARNO, 0);
-
- switch (stmt->event)
- {
- case CMD_SELECT:
- if (has_old)
- elog(ERROR, "ON SELECT rule may not use OLD");
- if (has_new)
- elog(ERROR, "ON SELECT rule may not use NEW");
- break;
- case CMD_UPDATE:
- /* both are OK */
- break;
- case CMD_INSERT:
- if (has_old)
- elog(ERROR, "ON INSERT rule may not use OLD");
- break;
- case CMD_DELETE:
- if (has_new)
- elog(ERROR, "ON DELETE rule may not use NEW");
- break;
- default:
- elog(ERROR, "transformRuleStmt: unexpected event type %d",
- (int) stmt->event);
- break;
- }
-
- /*
- * For efficiency's sake, add OLD to the rule action's
- * jointree only if it was actually referenced in the
- * statement or qual.
- *
- * For INSERT, NEW is not really a relation (only a reference to
- * the to-be-inserted tuple) and should never be added to the
- * jointree.
- *
- * For UPDATE, we treat NEW as being another kind of reference to
- * OLD, because it represents references to *transformed*
- * tuples of the existing relation. It would be wrong to
- * enter NEW separately in the jointree, since that would
- * cause a double join of the updated relation. It's also
- * wrong to fail to make a jointree entry if only NEW and not
- * OLD is mentioned.
- */
- if (has_old || (has_new && stmt->event == CMD_UPDATE))
- {
- /* hack so we can use addRTEtoQuery() */
- sub_pstate->p_rtable = sub_qry->rtable;
- sub_pstate->p_joinlist = sub_qry->jointree->fromlist;
- addRTEtoQuery(sub_pstate, oldrte, true, false);
- sub_qry->jointree->fromlist = sub_pstate->p_joinlist;
- }
-
- newactions = lappend(newactions, top_subqry);
-
- release_pstate_resources(sub_pstate);
- pfree(sub_pstate);
- }
-
- stmt->actions = newactions;
- }
-
- return qry;
-}
-
-
-/*
- * transformSelectStmt -
- * transforms a Select Statement
- *
- * Note: this is also used for DECLARE CURSOR statements.
- */
-static Query *
-transformSelectStmt(ParseState *pstate, SelectStmt *stmt)
-{
- Query *qry = makeNode(Query);
- Node *qual;
-
- qry->commandType = CMD_SELECT;
-
- if (stmt->portalname)
- {
- /* DECLARE CURSOR */
- if (stmt->into)
- elog(ERROR, "DECLARE CURSOR must not specify INTO");
- if (stmt->forUpdate)
- elog(ERROR, "DECLARE/UPDATE is not supported"
- "\n\tCursors must be READ ONLY");
-
- /*
- * 15 august 1991 -- since 3.0 postgres does locking right, we
- * discovered that portals were violating locking protocol. portal
- * locks cannot span xacts. as a short-term fix, we installed the
- * check here. -- mao
- */
- if (!IsTransactionBlock())
- elog(ERROR, "DECLARE CURSOR may only be used in begin/end transaction blocks");
-
- qry->into = makeNode(RangeVar);
- qry->into->relname = stmt->portalname;
- qry->isPortal = TRUE;
- qry->isBinary = stmt->binary; /* internal portal */
- }
- else
- {
- /* SELECT */
- qry->into = stmt->into;
- qry->isPortal = FALSE;
- qry->isBinary = FALSE;
- }
-
- /* make FOR UPDATE clause available to addRangeTableEntry */
- pstate->p_forUpdate = stmt->forUpdate;
-
- /* process the FROM clause */
- transformFromClause(pstate, stmt->fromClause);
-
- /* transform targetlist */
- qry->targetList = transformTargetList(pstate, stmt->targetList);
-
- if (stmt->intoColNames)
- applyColumnNames(qry->targetList, stmt->intoColNames);
-
- /* transform WHERE */
- qual = transformWhereClause(pstate, stmt->whereClause);
-
- /*
- * Initial processing of HAVING clause is just like WHERE clause.
- * Additional work will be done in optimizer/plan/planner.c.
- */
- qry->havingQual = transformWhereClause(pstate, stmt->havingClause);
-
- qry->groupClause = transformGroupClause(pstate,
- stmt->groupClause,
- qry->targetList);
-
- qry->sortClause = transformSortClause(pstate,
- stmt->sortClause,
- qry->targetList);
-
- qry->distinctClause = transformDistinctClause(pstate,
- stmt->distinctClause,
- qry->targetList,
- &qry->sortClause);
-
- qry->limitOffset = stmt->limitOffset;
- qry->limitCount = stmt->limitCount;
-
- qry->hasSubLinks = pstate->p_hasSubLinks;
- qry->hasAggs = pstate->p_hasAggs;
- if (pstate->p_hasAggs || qry->groupClause || qry->havingQual)
- parseCheckAggregates(pstate, qry, qual);
-
- qry->rtable = pstate->p_rtable;
- qry->jointree = makeFromExpr(pstate->p_joinlist, qual);
-
- if (stmt->forUpdate != NIL)
- transformForUpdate(qry, stmt->forUpdate);
-
- return qry;
-}
-
-/*
- * transformSetOperationsStmt -
- * transforms a set-operations tree
- *
- * A set-operation tree is just a SELECT, but with UNION/INTERSECT/EXCEPT
- * structure to it. We must transform each leaf SELECT and build up a top-
- * level Query that contains the leaf SELECTs as subqueries in its rangetable.
- * The tree of set operations is converted into the setOperations field of
- * the top-level Query.
- */
-static Query *
-transformSetOperationStmt(ParseState *pstate, SelectStmt *stmt)
-{
- Query *qry = makeNode(Query);
- SelectStmt *leftmostSelect;
- int leftmostRTI;
- Query *leftmostQuery;
- SetOperationStmt *sostmt;
- RangeVar *into;
- List *intoColNames;
- char *portalname;
- bool binary;
- List *sortClause;
- Node *limitOffset;
- Node *limitCount;
- List *forUpdate;
- Node *node;
- List *lefttl,
- *dtlist,
- *targetvars,
- *targetnames,
- *sv_namespace,
- *sv_rtable;
- RangeTblEntry *jrte;
- RangeTblRef *jrtr;
- int tllen;
-
- qry->commandType = CMD_SELECT;
-
- /*
- * Find leftmost leaf SelectStmt; extract the one-time-only items from
- * it and from the top-level node.
- */
- leftmostSelect = stmt->larg;
- while (leftmostSelect && leftmostSelect->op != SETOP_NONE)
- leftmostSelect = leftmostSelect->larg;
- Assert(leftmostSelect && IsA(leftmostSelect, SelectStmt) &&
- leftmostSelect->larg == NULL);
- into = leftmostSelect->into;
- intoColNames = leftmostSelect->intoColNames;
- portalname = stmt->portalname;
- binary = stmt->binary;
-
- /* clear them to prevent complaints in transformSetOperationTree() */
- leftmostSelect->into = NULL;
- leftmostSelect->intoColNames = NIL;
- stmt->portalname = NULL;
- stmt->binary = false;
-
- /*
- * These are not one-time, exactly, but we want to process them here
- * and not let transformSetOperationTree() see them --- else it'll
- * just recurse right back here!
- */
- sortClause = stmt->sortClause;
- limitOffset = stmt->limitOffset;
- limitCount = stmt->limitCount;
- forUpdate = stmt->forUpdate;
-
- stmt->sortClause = NIL;
- stmt->limitOffset = NULL;
- stmt->limitCount = NULL;
- stmt->forUpdate = NIL;
-
- /* We don't support forUpdate with set ops at the moment. */
- if (forUpdate)
- elog(ERROR, "SELECT FOR UPDATE is not allowed with UNION/INTERSECT/EXCEPT");
-
- /*
- * Recursively transform the components of the tree.
- */
- sostmt = (SetOperationStmt *) transformSetOperationTree(pstate, stmt);
- Assert(sostmt && IsA(sostmt, SetOperationStmt));
- qry->setOperations = (Node *) sostmt;
-
- /*
- * Re-find leftmost SELECT (now it's a sub-query in rangetable)
- */
- node = sostmt->larg;
- while (node && IsA(node, SetOperationStmt))
- node = ((SetOperationStmt *) node)->larg;
- Assert(node && IsA(node, RangeTblRef));
- leftmostRTI = ((RangeTblRef *) node)->rtindex;
- leftmostQuery = rt_fetch(leftmostRTI, pstate->p_rtable)->subquery;
- Assert(leftmostQuery != NULL);
-
- /*
- * Generate dummy targetlist for outer query using column names of
- * leftmost select and common datatypes of topmost set operation. Also
- * make lists of the dummy vars and their names for use in parsing
- * ORDER BY.
- */
- qry->targetList = NIL;
- targetvars = NIL;
- targetnames = NIL;
- lefttl = leftmostQuery->targetList;
- foreach(dtlist, sostmt->colTypes)
- {
- Oid colType = (Oid) lfirsti(dtlist);
- Resdom *leftResdom = ((TargetEntry *) lfirst(lefttl))->resdom;
- char *colName = pstrdup(leftResdom->resname);
- Resdom *resdom;
- Node *expr;
-
- resdom = makeResdom((AttrNumber) pstate->p_last_resno++,
- colType,
- -1,
- colName,
- false);
- expr = (Node *) makeVar(1,
- leftResdom->resno,
- colType,
- -1,
- 0);
- qry->targetList = lappend(qry->targetList,
- makeTargetEntry(resdom, expr));
- targetvars = lappend(targetvars, expr);
- targetnames = lappend(targetnames, makeString(colName));
- lefttl = lnext(lefttl);
- }
-
- /*
- * Insert one-time items into top-level query
- *
- * This needs to agree with transformSelectStmt!
- */
- if (portalname)
- {
- /* DECLARE CURSOR */
- if (into)
- elog(ERROR, "DECLARE CURSOR must not specify INTO");
- if (forUpdate)
- elog(ERROR, "DECLARE/UPDATE is not supported"
- "\n\tCursors must be READ ONLY");
-
- /*
- * 15 august 1991 -- since 3.0 postgres does locking right, we
- * discovered that portals were violating locking protocol. portal
- * locks cannot span xacts. as a short-term fix, we installed the
- * check here. -- mao
- */
- if (!IsTransactionBlock())
- elog(ERROR, "DECLARE CURSOR may only be used in begin/end transaction blocks");
-
- qry->into = makeNode(RangeVar);
- qry->into->relname = portalname;
- qry->isPortal = TRUE;
- qry->isBinary = binary; /* internal portal */
- }
- else
- {
- /* SELECT */
- qry->into = into;
- qry->isPortal = FALSE;
- qry->isBinary = FALSE;
- }
-
- /*
- * Any column names from CREATE TABLE AS need to be attached to both the
- * top level and the leftmost subquery. We do not do this earlier
- * because we do *not* want the targetnames list to be affected.
- */
- if (intoColNames)
- {
- applyColumnNames(qry->targetList, intoColNames);
- applyColumnNames(leftmostQuery->targetList, intoColNames);
- }
-
- /*
- * As a first step towards supporting sort clauses that are
- * expressions using the output columns, generate a namespace entry
- * that makes the output columns visible. A Join RTE node is handy
- * for this, since we can easily control the Vars generated upon
- * matches.
- *
- * Note: we don't yet do anything useful with such cases, but at least
- * "ORDER BY upper(foo)" will draw the right error message rather than
- * "foo not found".
- */
- jrte = addRangeTableEntryForJoin(NULL,
- targetnames,
- JOIN_INNER,
- targetvars,
- NULL,
- true);
- jrtr = makeNode(RangeTblRef);
- jrtr->rtindex = 1;
-
- sv_rtable = pstate->p_rtable;
- pstate->p_rtable = makeList1(jrte);
-
- sv_namespace = pstate->p_namespace;
- pstate->p_namespace = makeList1(jrtr);
-
- /*
- * For now, we don't support resjunk sort clauses on the output of a
- * setOperation tree --- you can only use the SQL92-spec options of
- * selecting an output column by name or number. Enforce by checking
- * that transformSortClause doesn't add any items to tlist.
- */
- tllen = length(qry->targetList);
-
- qry->sortClause = transformSortClause(pstate,
- sortClause,
- qry->targetList);
-
- pstate->p_namespace = sv_namespace;
- pstate->p_rtable = sv_rtable;
-
- if (tllen != length(qry->targetList))
- elog(ERROR, "ORDER BY on a UNION/INTERSECT/EXCEPT result must be on one of the result columns");
-
- qry->limitOffset = limitOffset;
- qry->limitCount = limitCount;
-
- qry->hasSubLinks = pstate->p_hasSubLinks;
- qry->hasAggs = pstate->p_hasAggs;
- if (pstate->p_hasAggs || qry->groupClause || qry->havingQual)
- parseCheckAggregates(pstate, qry, NULL);
-
- qry->rtable = pstate->p_rtable;
- qry->jointree = makeFromExpr(pstate->p_joinlist, NULL);
-
- if (forUpdate != NIL)
- transformForUpdate(qry, forUpdate);
-
- return qry;
-}
-
-/*
- * transformSetOperationTree
- * Recursively transform leaves and internal nodes of a set-op tree
- */
-static Node *
-transformSetOperationTree(ParseState *pstate, SelectStmt *stmt)
-{
- bool isLeaf;
-
- Assert(stmt && IsA(stmt, SelectStmt));
-
- /*
- * Validity-check both leaf and internal SELECTs for disallowed ops.
- */
- if (stmt->into)
- elog(ERROR, "INTO is only allowed on first SELECT of UNION/INTERSECT/EXCEPT");
- if (stmt->portalname) /* should not happen */
- elog(ERROR, "Portal may not appear in UNION/INTERSECT/EXCEPT");
- /* We don't support forUpdate with set ops at the moment. */
- if (stmt->forUpdate)
- elog(ERROR, "SELECT FOR UPDATE is not allowed with UNION/INTERSECT/EXCEPT");
-
- /*
- * If an internal node of a set-op tree has ORDER BY, UPDATE, or LIMIT
- * clauses attached, we need to treat it like a leaf node to generate
- * an independent sub-Query tree. Otherwise, it can be represented by
- * a SetOperationStmt node underneath the parent Query.
- */
- if (stmt->op == SETOP_NONE)
- {
- Assert(stmt->larg == NULL && stmt->rarg == NULL);
- isLeaf = true;
- }
- else
- {
- Assert(stmt->larg != NULL && stmt->rarg != NULL);
- if (stmt->sortClause || stmt->limitOffset || stmt->limitCount ||
- stmt->forUpdate)
- isLeaf = true;
- else
- isLeaf = false;
- }
-
- if (isLeaf)
- {
- /* Process leaf SELECT */
- List *selectList;
- Query *selectQuery;
- char selectName[32];
- RangeTblEntry *rte;
- RangeTblRef *rtr;
-
- /*
- * Transform SelectStmt into a Query.
- *
- * Note: previously transformed sub-queries don't affect the parsing
- * of this sub-query, because they are not in the toplevel
- * pstate's namespace list.
- */
- selectList = parse_analyze((Node *) stmt, pstate);
-
- Assert(length(selectList) == 1);
- selectQuery = (Query *) lfirst(selectList);
-
- /*
- * Make the leaf query be a subquery in the top-level rangetable.
- */
- sprintf(selectName, "*SELECT* %d", length(pstate->p_rtable) + 1);
- rte = addRangeTableEntryForSubquery(pstate,
- selectQuery,
- makeAlias(selectName, NIL),
- false);
-
- /*
- * Return a RangeTblRef to replace the SelectStmt in the set-op
- * tree.
- */
- rtr = makeNode(RangeTblRef);
- /* assume new rte is at end */
- rtr->rtindex = length(pstate->p_rtable);
- Assert(rte == rt_fetch(rtr->rtindex, pstate->p_rtable));
- return (Node *) rtr;
- }
- else
- {
- /* Process an internal node (set operation node) */
- SetOperationStmt *op = makeNode(SetOperationStmt);
- List *lcoltypes;
- List *rcoltypes;
- const char *context;
-
- context = (stmt->op == SETOP_UNION ? "UNION" :
- (stmt->op == SETOP_INTERSECT ? "INTERSECT" :
- "EXCEPT"));
-
- op->op = stmt->op;
- op->all = stmt->all;
-
- /*
- * Recursively transform the child nodes.
- */
- op->larg = transformSetOperationTree(pstate, stmt->larg);
- op->rarg = transformSetOperationTree(pstate, stmt->rarg);
-
- /*
- * Verify that the two children have the same number of non-junk
- * columns, and determine the types of the merged output columns.
- */
- lcoltypes = getSetColTypes(pstate, op->larg);
- rcoltypes = getSetColTypes(pstate, op->rarg);
- if (length(lcoltypes) != length(rcoltypes))
- elog(ERROR, "Each %s query must have the same number of columns",
- context);
- op->colTypes = NIL;
- while (lcoltypes != NIL)
- {
- Oid lcoltype = (Oid) lfirsti(lcoltypes);
- Oid rcoltype = (Oid) lfirsti(rcoltypes);
- Oid rescoltype;
-
- rescoltype = select_common_type(makeListi2(lcoltype, rcoltype),
- context);
- op->colTypes = lappendi(op->colTypes, rescoltype);
- lcoltypes = lnext(lcoltypes);
- rcoltypes = lnext(rcoltypes);
- }
-
- return (Node *) op;
- }
-}
-
-/*
- * getSetColTypes
- * Get output column types of an (already transformed) set-op node
- */
-static List *
-getSetColTypes(ParseState *pstate, Node *node)
-{
- if (IsA(node, RangeTblRef))
- {
- RangeTblRef *rtr = (RangeTblRef *) node;
- RangeTblEntry *rte = rt_fetch(rtr->rtindex, pstate->p_rtable);
- Query *selectQuery = rte->subquery;
- List *result = NIL;
- List *tl;
-
- Assert(selectQuery != NULL);
- /* Get types of non-junk columns */
- foreach(tl, selectQuery->targetList)
- {
- TargetEntry *tle = (TargetEntry *) lfirst(tl);
- Resdom *resnode = tle->resdom;
-
- if (resnode->resjunk)
- continue;
- result = lappendi(result, resnode->restype);
- }
- return result;
- }
- else if (IsA(node, SetOperationStmt))
- {
- SetOperationStmt *op = (SetOperationStmt *) node;
-
- /* Result already computed during transformation of node */
- Assert(op->colTypes != NIL);
- return op->colTypes;
- }
- else
- {
- elog(ERROR, "getSetColTypes: unexpected node %d",
- (int) nodeTag(node));
- return NIL; /* keep compiler quiet */
- }
-}
-
-/* Attach column names from a ColumnDef list to a TargetEntry list */
-static void
-applyColumnNames(List *dst, List *src)
-{
- if (length(src) > length(dst))
- elog(ERROR, "CREATE TABLE AS specifies too many column names");
-
- while (src != NIL && dst != NIL)
- {
- TargetEntry *d = (TargetEntry *) lfirst(dst);
- ColumnDef *s = (ColumnDef *) lfirst(src);
-
- Assert(d->resdom && !d->resdom->resjunk);
-
- d->resdom->resname = pstrdup(s->colname);
-
- dst = lnext(dst);
- src = lnext(src);
- }
-}
-
-
-/*
- * transformUpdateStmt -
- * transforms an update statement
- */
-static Query *
-transformUpdateStmt(ParseState *pstate, UpdateStmt *stmt)
-{
- Query *qry = makeNode(Query);
- Node *qual;
- List *origTargetList;
- List *tl;
-
- qry->commandType = CMD_UPDATE;
- pstate->p_is_update = true;
-
- qry->resultRelation = setTargetTable(pstate, stmt->relation,
- interpretInhOption(stmt->relation->inhOpt),
- true);
-
- /*
- * the FROM clause is non-standard SQL syntax. We used to be able to
- * do this with REPLACE in POSTQUEL so we keep the feature.
- */
- transformFromClause(pstate, stmt->fromClause);
-
- qry->targetList = transformTargetList(pstate, stmt->targetList);
-
- qual = transformWhereClause(pstate, stmt->whereClause);
-
- qry->rtable = pstate->p_rtable;
- qry->jointree = makeFromExpr(pstate->p_joinlist, qual);
-
- qry->hasSubLinks = pstate->p_hasSubLinks;
- qry->hasAggs = pstate->p_hasAggs;
- if (pstate->p_hasAggs)
- parseCheckAggregates(pstate, qry, qual);
-
- /*
- * Now we are done with SELECT-like processing, and can get on with
- * transforming the target list to match the UPDATE target columns.
- */
-
- /* Prepare to assign non-conflicting resnos to resjunk attributes */
- if (pstate->p_last_resno <= pstate->p_target_relation->rd_rel->relnatts)
- pstate->p_last_resno = pstate->p_target_relation->rd_rel->relnatts + 1;
-
- /* Prepare non-junk columns for assignment to target table */
- origTargetList = stmt->targetList;
- foreach(tl, qry->targetList)
- {
- TargetEntry *tle = (TargetEntry *) lfirst(tl);
- Resdom *resnode = tle->resdom;
- ResTarget *origTarget;
-
- if (resnode->resjunk)
- {
- /*
- * Resjunk nodes need no additional processing, but be sure
- * they have names and resnos that do not match any target
- * columns; else rewriter or planner might get confused.
- */
- resnode->resname = "?resjunk?";
- resnode->resno = (AttrNumber) pstate->p_last_resno++;
- continue;
- }
- if (origTargetList == NIL)
- elog(ERROR, "UPDATE target count mismatch --- internal error");
- origTarget = (ResTarget *) lfirst(origTargetList);
- updateTargetListEntry(pstate, tle, origTarget->name,
- attnameAttNum(pstate->p_target_relation,
- origTarget->name),
- origTarget->indirection);
- origTargetList = lnext(origTargetList);
- }
- if (origTargetList != NIL)
- elog(ERROR, "UPDATE target count mismatch --- internal error");
-
- return qry;
-}
-
-/*
- * tranformAlterTableStmt -
- * transform an Alter Table Statement
- */
-static Query *
-transformAlterTableStmt(ParseState *pstate, AlterTableStmt *stmt,
- List **extras_before, List **extras_after)
-{
- CreateStmtContext cxt;
- Query *qry;
-
- /*
- * The only subtypes that currently require parse transformation
- * handling are 'A'dd column and Add 'C'onstraint. These largely
- * re-use code from CREATE TABLE.
- */
- switch (stmt->subtype)
- {
- case 'A':
- cxt.stmtType = "ALTER TABLE";
- cxt.relation = stmt->relation;
- cxt.inhRelations = NIL;
- cxt.relOid = RangeVarGetRelid(stmt->relation, false);
- cxt.hasoids = SearchSysCacheExists(ATTNUM,
- ObjectIdGetDatum(cxt.relOid),
- Int16GetDatum(ObjectIdAttributeNumber),
- 0, 0);
- cxt.columns = NIL;
- cxt.ckconstraints = NIL;
- cxt.fkconstraints = NIL;
- cxt.ixconstraints = NIL;
- cxt.blist = NIL;
- cxt.alist = NIL;
- cxt.pkey = NULL;
-
- Assert(IsA(stmt->def, ColumnDef));
- transformColumnDefinition(pstate, &cxt,
- (ColumnDef *) stmt->def);
-
- transformIndexConstraints(pstate, &cxt);
- transformFKConstraints(pstate, &cxt);
-
- ((ColumnDef *) stmt->def)->constraints = cxt.ckconstraints;
- *extras_before = nconc(*extras_before, cxt.blist);
- *extras_after = nconc(cxt.alist, *extras_after);
- break;
-
- case 'C':
- cxt.stmtType = "ALTER TABLE";
- cxt.relation = stmt->relation;
- cxt.inhRelations = NIL;
- cxt.relOid = RangeVarGetRelid(stmt->relation, false);
- cxt.hasoids = SearchSysCacheExists(ATTNUM,
- ObjectIdGetDatum(cxt.relOid),
- Int16GetDatum(ObjectIdAttributeNumber),
- 0, 0);
- cxt.columns = NIL;
- cxt.ckconstraints = NIL;
- cxt.fkconstraints = NIL;
- cxt.ixconstraints = NIL;
- cxt.blist = NIL;
- cxt.alist = NIL;
- cxt.pkey = NULL;
-
- if (IsA(stmt->def, Constraint))
- transformTableConstraint(pstate, &cxt,
- (Constraint *) stmt->def);
- else if (IsA(stmt->def, FkConstraint))
- cxt.fkconstraints = lappend(cxt.fkconstraints, stmt->def);
- else
- elog(ERROR, "Unexpected node type in ALTER TABLE ADD CONSTRAINT");
-
- transformIndexConstraints(pstate, &cxt);
- transformFKConstraints(pstate, &cxt);
-
- Assert(cxt.columns == NIL);
- stmt->def = (Node *) nconc(cxt.ckconstraints, cxt.fkconstraints);
- *extras_before = nconc(*extras_before, cxt.blist);
- *extras_after = nconc(cxt.alist, *extras_after);
- break;
-
- default:
- break;
- }
-
- qry = makeNode(Query);
- qry->commandType = CMD_UTILITY;
- qry->utilityStmt = (Node *) stmt;
-
- return qry;
-}
-
-/* exported so planner can check again after rewriting, query pullup, etc */
-void
-CheckSelectForUpdate(Query *qry)
-{
- if (qry->setOperations)
- elog(ERROR, "SELECT FOR UPDATE is not allowed with UNION/INTERSECT/EXCEPT");
- if (qry->distinctClause != NIL)
- elog(ERROR, "SELECT FOR UPDATE is not allowed with DISTINCT clause");
- if (qry->groupClause != NIL)
- elog(ERROR, "SELECT FOR UPDATE is not allowed with GROUP BY clause");
- if (qry->hasAggs)
- elog(ERROR, "SELECT FOR UPDATE is not allowed with AGGREGATE");
-}
-
-static void
-transformForUpdate(Query *qry, List *forUpdate)
-{
- List *rowMarks = qry->rowMarks;
- List *l;
- List *rt;
- Index i;
-
- CheckSelectForUpdate(qry);
-
- if (lfirst(forUpdate) == NULL)
- {
- /* all tables used in query */
- i = 0;
- foreach(rt, qry->rtable)
- {
- RangeTblEntry *rte = (RangeTblEntry *) lfirst(rt);
-
- ++i;
- if (rte->rtekind == RTE_SUBQUERY)
- {
- /* FOR UPDATE of subquery is propagated to subquery's rels */
- transformForUpdate(rte->subquery, makeList1(NULL));
- }
- else
- {
- if (!intMember(i, rowMarks)) /* avoid duplicates */
- rowMarks = lappendi(rowMarks, i);
- rte->checkForWrite = true;
- }
- }
- }
- else
- {
- /* just the named tables */
- foreach(l, forUpdate)
- {
- char *relname = strVal(lfirst(l));
-
- i = 0;
- foreach(rt, qry->rtable)
- {
- RangeTblEntry *rte = (RangeTblEntry *) lfirst(rt);
-
- ++i;
- if (strcmp(rte->eref->aliasname, relname) == 0)
- {
- if (rte->rtekind == RTE_SUBQUERY)
- {
- /* propagate to subquery */
- transformForUpdate(rte->subquery, makeList1(NULL));
- }
- else
- {
- if (!intMember(i, rowMarks)) /* avoid duplicates */
- rowMarks = lappendi(rowMarks, i);
- rte->checkForWrite = true;
- }
- break;
- }
- }
- if (rt == NIL)
- elog(ERROR, "FOR UPDATE: relation \"%s\" not found in FROM clause",
- relname);
- }
- }
-
- qry->rowMarks = rowMarks;
-}
-
-
-/*
- * transformFkeyCheckAttrs -
- *
- * Make sure that the attributes of a referenced table
- * belong to a unique (or primary key) constraint.
- */
-static void
-transformFkeyCheckAttrs(FkConstraint *fkconstraint, Oid *pktypoid)
-{
- Relation pkrel;
- List *indexoidlist,
- *indexoidscan;
- int i;
- bool found = false;
-
- /*
- * Open the referenced table
- */
- pkrel = heap_openrv(fkconstraint->pktable, AccessShareLock);
-
- if (pkrel->rd_rel->relkind != RELKIND_RELATION)
- elog(ERROR, "Referenced relation \"%s\" is not a table",
- fkconstraint->pktable->relname);
-
- /*
- * Get the list of index OIDs for the table from the relcache, and
- * look up each one in the pg_index syscache for each unique one, and
- * then compare the attributes we were given to those defined.
- */
- indexoidlist = RelationGetIndexList(pkrel);
-
- foreach(indexoidscan, indexoidlist)
- {
- Oid indexoid = lfirsti(indexoidscan);
- HeapTuple indexTuple;
- Form_pg_index indexStruct;
-
- found = false;
- indexTuple = SearchSysCache(INDEXRELID,
- ObjectIdGetDatum(indexoid),
- 0, 0, 0);
- if (!HeapTupleIsValid(indexTuple))
- elog(ERROR, "transformFkeyCheckAttrs: index %u not found",
- indexoid);
- indexStruct = (Form_pg_index) GETSTRUCT(indexTuple);
-
- if (indexStruct->indisunique)
- {
- for (i = 0; i < INDEX_MAX_KEYS && indexStruct->indkey[i] != 0; i++)
- ;
- if (i == length(fkconstraint->pk_attrs))
- {
- /* go through the fkconstraint->pk_attrs list */
- List *attrl;
- int attnum = 0;
-
- foreach(attrl, fkconstraint->pk_attrs)
- {
- Ident *attr = lfirst(attrl);
-
- found = false;
- for (i = 0; i < INDEX_MAX_KEYS && indexStruct->indkey[i] != 0; i++)
- {
- int pkattno = indexStruct->indkey[i];
-
- if (namestrcmp(attnumAttName(pkrel, pkattno),
- attr->name) == 0)
- {
- pktypoid[attnum++] = attnumTypeId(pkrel, pkattno);
- found = true;
- break;
- }
- }
- if (!found)
- break;
- }
- }
- }
- ReleaseSysCache(indexTuple);
- if (found)
- break;
- }
- if (!found)
- elog(ERROR, "UNIQUE constraint matching given keys for referenced table \"%s\" not found",
- fkconstraint->pktable->relname);
-
- freeList(indexoidlist);
- heap_close(pkrel, AccessShareLock);
-}
-
-
-/*
- * transformFkeyGetPrimaryKey -
- *
- * Try to find the primary key attributes of a referenced table if
- * the column list in the REFERENCES specification was omitted.
- */
-static void
-transformFkeyGetPrimaryKey(FkConstraint *fkconstraint, Oid *pktypoid)
-{
- Relation pkrel;
- List *indexoidlist,
- *indexoidscan;
- HeapTuple indexTuple = NULL;
- Form_pg_index indexStruct = NULL;
- int i;
- int attnum = 0;
-
- /*
- * Open the referenced table
- */
- pkrel = heap_openrv(fkconstraint->pktable, AccessShareLock);
-
- if (pkrel->rd_rel->relkind != RELKIND_RELATION)
- elog(ERROR, "Referenced relation \"%s\" is not a table",
- fkconstraint->pktable->relname);
-
- /*
- * Get the list of index OIDs for the table from the relcache, and
- * look up each one in the pg_index syscache until we find one marked
- * primary key (hopefully there isn't more than one such).
- */
- indexoidlist = RelationGetIndexList(pkrel);
-
- foreach(indexoidscan, indexoidlist)
- {
- Oid indexoid = lfirsti(indexoidscan);
-
- indexTuple = SearchSysCache(INDEXRELID,
- ObjectIdGetDatum(indexoid),
- 0, 0, 0);
- if (!HeapTupleIsValid(indexTuple))
- elog(ERROR, "transformFkeyGetPrimaryKey: index %u not found",
- indexoid);
- indexStruct = (Form_pg_index) GETSTRUCT(indexTuple);
- if (indexStruct->indisprimary)
- break;
- ReleaseSysCache(indexTuple);
- indexStruct = NULL;
- }
-
- freeList(indexoidlist);
-
- /*
- * Check that we found it
- */
- if (indexStruct == NULL)
- elog(ERROR, "PRIMARY KEY for referenced table \"%s\" not found",
- fkconstraint->pktable->relname);
-
- /*
- * Now build the list of PK attributes from the indkey definition
- * using the attribute names of the PK relation descriptor
- */
- for (i = 0; i < INDEX_MAX_KEYS && indexStruct->indkey[i] != 0; i++)
- {
- int pkattno = indexStruct->indkey[i];
- Ident *pkattr = makeNode(Ident);
-
- pkattr->name = pstrdup(NameStr(*attnumAttName(pkrel, pkattno)));
- pktypoid[attnum++] = attnumTypeId(pkrel, pkattno);
-
- fkconstraint->pk_attrs = lappend(fkconstraint->pk_attrs, pkattr);
- }
-
- ReleaseSysCache(indexTuple);
-
- heap_close(pkrel, AccessShareLock);
-}
-
-/*
- * relationHasPrimaryKey -
- *
- * See whether an existing relation has a primary key.
- */
-static bool
-relationHasPrimaryKey(Oid relationOid)
-{
- bool result = false;
- Relation rel;
- List *indexoidlist,
- *indexoidscan;
-
- rel = heap_open(relationOid, AccessShareLock);
-
- /*
- * Get the list of index OIDs for the table from the relcache, and
- * look up each one in the pg_index syscache until we find one marked
- * primary key (hopefully there isn't more than one such).
- */
- indexoidlist = RelationGetIndexList(rel);
-
- foreach(indexoidscan, indexoidlist)
- {
- Oid indexoid = lfirsti(indexoidscan);
- HeapTuple indexTuple;
-
- indexTuple = SearchSysCache(INDEXRELID,
- ObjectIdGetDatum(indexoid),
- 0, 0, 0);
- if (!HeapTupleIsValid(indexTuple))
- elog(ERROR, "relationHasPrimaryKey: index %u not found",
- indexoid);
- result = ((Form_pg_index) GETSTRUCT(indexTuple))->indisprimary;
- ReleaseSysCache(indexTuple);
- if (result)
- break;
- }
-
- freeList(indexoidlist);
-
- heap_close(rel, AccessShareLock);
-
- return result;
-}
-
-/*
- * transformFkeyGetColType -
- *
- * Find a referencing column by name, and return its type OID.
- * Error if it can't be found.
- */
-static Oid
-transformFkeyGetColType(CreateStmtContext *cxt, char *colname)
-{
- List *cols;
- List *inher;
- Oid result;
- Form_pg_attribute sysatt;
-
- /* First look for column among the newly-created columns */
- foreach(cols, cxt->columns)
- {
- ColumnDef *col = lfirst(cols);
-
- if (strcmp(col->colname, colname) == 0)
- return typenameTypeId(col->typename);
- }
- /* Perhaps it's a system column name */
- sysatt = SystemAttributeByName(colname, cxt->hasoids);
- if (sysatt)
- return sysatt->atttypid;
- /* Look for column among inherited columns (if CREATE TABLE case) */
- foreach(inher, cxt->inhRelations)
- {
- RangeVar *inh = lfirst(inher);
- Relation rel;
- int count;
-
- Assert(IsA(inh, RangeVar));
- rel = heap_openrv(inh, AccessShareLock);
- if (rel->rd_rel->relkind != RELKIND_RELATION)
- elog(ERROR, "inherited table \"%s\" is not a relation",
- inh->relname);
- for (count = 0; count < rel->rd_att->natts; count++)
- {
- char *name = NameStr(rel->rd_att->attrs[count]->attname);
-
- if (strcmp(name, colname) == 0)
- {
- result = rel->rd_att->attrs[count]->atttypid;
- heap_close(rel, NoLock);
- return result;
- }
- }
- heap_close(rel, NoLock);
- }
- /* Look for column among existing columns (if ALTER TABLE case) */
- if (OidIsValid(cxt->relOid))
- {
- HeapTuple atttuple;
-
- atttuple = SearchSysCache(ATTNAME,
- ObjectIdGetDatum(cxt->relOid),
- PointerGetDatum(colname),
- 0, 0);
- if (HeapTupleIsValid(atttuple))
- {
- result = ((Form_pg_attribute) GETSTRUCT(atttuple))->atttypid;
- ReleaseSysCache(atttuple);
- return result;
- }
- }
-
- elog(ERROR, "%s: column \"%s\" referenced in foreign key constraint does not exist",
- cxt->stmtType, colname);
- return InvalidOid; /* keep compiler quiet */
-}
-
-/*
- * Preprocess a list of column constraint clauses
- * to attach constraint attributes to their primary constraint nodes
- * and detect inconsistent/misplaced constraint attributes.
- *
- * NOTE: currently, attributes are only supported for FOREIGN KEY primary
- * constraints, but someday they ought to be supported for other constraints.
- */
-static void
-transformConstraintAttrs(List *constraintList)
-{
- Node *lastprimarynode = NULL;
- bool saw_deferrability = false;
- bool saw_initially = false;
- List *clist;
-
- foreach(clist, constraintList)
- {
- Node *node = lfirst(clist);
-
- if (!IsA(node, Constraint))
- {
- lastprimarynode = node;
- /* reset flags for new primary node */
- saw_deferrability = false;
- saw_initially = false;
- }
- else
- {
- Constraint *con = (Constraint *) node;
-
- switch (con->contype)
- {
- case CONSTR_ATTR_DEFERRABLE:
- if (lastprimarynode == NULL ||
- !IsA(lastprimarynode, FkConstraint))
- elog(ERROR, "Misplaced DEFERRABLE clause");
- if (saw_deferrability)
- elog(ERROR, "Multiple DEFERRABLE/NOT DEFERRABLE clauses not allowed");
- saw_deferrability = true;
- ((FkConstraint *) lastprimarynode)->deferrable = true;
- break;
- case CONSTR_ATTR_NOT_DEFERRABLE:
- if (lastprimarynode == NULL ||
- !IsA(lastprimarynode, FkConstraint))
- elog(ERROR, "Misplaced NOT DEFERRABLE clause");
- if (saw_deferrability)
- elog(ERROR, "Multiple DEFERRABLE/NOT DEFERRABLE clauses not allowed");
- saw_deferrability = true;
- ((FkConstraint *) lastprimarynode)->deferrable = false;
- if (saw_initially &&
- ((FkConstraint *) lastprimarynode)->initdeferred)
- elog(ERROR, "INITIALLY DEFERRED constraint must be DEFERRABLE");
- break;
- case CONSTR_ATTR_DEFERRED:
- if (lastprimarynode == NULL ||
- !IsA(lastprimarynode, FkConstraint))
- elog(ERROR, "Misplaced INITIALLY DEFERRED clause");
- if (saw_initially)
- elog(ERROR, "Multiple INITIALLY IMMEDIATE/DEFERRED clauses not allowed");
- saw_initially = true;
- ((FkConstraint *) lastprimarynode)->initdeferred = true;
-
- /*
- * If only INITIALLY DEFERRED appears, assume
- * DEFERRABLE
- */
- if (!saw_deferrability)
- ((FkConstraint *) lastprimarynode)->deferrable = true;
- else if (!((FkConstraint *) lastprimarynode)->deferrable)
- elog(ERROR, "INITIALLY DEFERRED constraint must be DEFERRABLE");
- break;
- case CONSTR_ATTR_IMMEDIATE:
- if (lastprimarynode == NULL ||
- !IsA(lastprimarynode, FkConstraint))
- elog(ERROR, "Misplaced INITIALLY IMMEDIATE clause");
- if (saw_initially)
- elog(ERROR, "Multiple INITIALLY IMMEDIATE/DEFERRED clauses not allowed");
- saw_initially = true;
- ((FkConstraint *) lastprimarynode)->initdeferred = false;
- break;
- default:
- /* Otherwise it's not an attribute */
- lastprimarynode = node;
- /* reset flags for new primary node */
- saw_deferrability = false;
- saw_initially = false;
- break;
- }
- }
- }
-}
-
-/* Build a FromExpr node */
-static FromExpr *
-makeFromExpr(List *fromlist, Node *quals)
-{
- FromExpr *f = makeNode(FromExpr);
-
- f->fromlist = fromlist;
- f->quals = quals;
- return f;
-}
-
-/*
- * Special handling of type definition for a column
- */
-static void
-transformColumnType(ParseState *pstate, ColumnDef *column)
-{
- TypeName *typename = column->typename;
- Type ctype = typenameType(typename);
-
- /*
- * Is this the name of a complex type? If so, implement it as a set.
- *
- * XXX this is a hangover from ancient Berkeley code that probably
- * doesn't work anymore anyway.
- */
- if (typeTypeRelid(ctype) != InvalidOid)
- {
- /*
- * (Eventually add in here that the set can only contain one
- * element.)
- */
- typename->setof = true;
- }
-
- ReleaseSysCache(ctype);
-}
-
-/*
- * analyzeCreateSchemaStmt -
- * analyzes the "create schema" statement
- *
- * Split the schema element list into individual commands and place
- * them in the result list in an order such that there are no
- * forward references (e.g. GRANT to a table created later in the list).
- *
- * SQL92 also allows constraints to make forward references, so thumb through
- * the table columns and move forward references to a posterior alter-table
- * command.
- *
- * The result is a list of parse nodes that still need to be analyzed ---
- * but we can't analyze the later commands until we've executed the earlier
- * ones, because of possible inter-object references.
- *
- * Note: Called from commands/command.c
- */
-List *
-analyzeCreateSchemaStmt(CreateSchemaStmt *stmt)
-{
- CreateSchemaStmtContext cxt;
- List *result;
- List *elements;
-
- cxt.stmtType = "CREATE SCHEMA";
- cxt.schemaname = stmt->schemaname;
- cxt.authid = stmt->authid;
- cxt.tables = NIL;
- cxt.views = NIL;
- cxt.grants = NIL;
- cxt.fwconstraints = NIL;
- cxt.alters = NIL;
- cxt.blist = NIL;
- cxt.alist = NIL;
-
- /*
- * Run through each schema element in the schema element list.
- * Separate statements by type, and do preliminary analysis.
- */
- foreach(elements, stmt->schemaElts)
- {
- Node *element = lfirst(elements);
-
- switch (nodeTag(element))
- {
- case T_CreateStmt:
- {
- CreateStmt *elp = (CreateStmt *) element;
-
- if (elp->relation->schemaname == NULL)
- elp->relation->schemaname = cxt.schemaname;
- else if (strcmp(cxt.schemaname, elp->relation->schemaname) != 0)
- elog(ERROR, "New table specifies a schema (%s)"
- " different from the one being created (%s)",
- elp->relation->schemaname, cxt.schemaname);
-
- /*
- * XXX todo: deal with constraints
- */
-
- cxt.tables = lappend(cxt.tables, element);
- }
- break;
-
- case T_ViewStmt:
- {
- ViewStmt *elp = (ViewStmt *) element;
-
- if (elp->view->schemaname == NULL)
- elp->view->schemaname = cxt.schemaname;
- else if (strcmp(cxt.schemaname, elp->view->schemaname) != 0)
- elog(ERROR, "New view specifies a schema (%s)"
- " different from the one being created (%s)",
- elp->view->schemaname, cxt.schemaname);
-
- /*
- * XXX todo: deal with references between views
- */
-
- cxt.views = lappend(cxt.views, element);
- }
- break;
-
- case T_GrantStmt:
- cxt.grants = lappend(cxt.grants, element);
- break;
-
- default:
- elog(ERROR, "parser: unsupported schema node (internal error)");
- }
- }
-
- result = NIL;
- result = nconc(result, cxt.tables);
- result = nconc(result, cxt.views);
- result = nconc(result, cxt.grants);
-
- return result;
-}