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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/executor/execMain.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/executor/execMain.c')
-rw-r--r--src/backend/executor/execMain.c1941
1 files changed, 0 insertions, 1941 deletions
diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c
deleted file mode 100644
index 27b187f2a5e..00000000000
--- a/src/backend/executor/execMain.c
+++ /dev/null
@@ -1,1941 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * execMain.c
- * top level executor interface routines
- *
- * INTERFACE ROUTINES
- * ExecutorStart()
- * ExecutorRun()
- * ExecutorEnd()
- *
- * The old ExecutorMain() has been replaced by ExecutorStart(),
- * ExecutorRun() and ExecutorEnd()
- *
- * These three procedures are the external interfaces to the executor.
- * In each case, the query descriptor and the execution state is required
- * as arguments
- *
- * ExecutorStart() must be called at the beginning of any execution of any
- * query plan and ExecutorEnd() should always be called at the end of
- * execution of a plan.
- *
- * ExecutorRun accepts direction and count arguments that specify whether
- * the plan is to be executed forwards, backwards, and for how many tuples.
- *
- * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.165 2002/06/20 20:29:27 momjian Exp $
- *
- *-------------------------------------------------------------------------
- */
-#include "postgres.h"
-
-#include "access/heapam.h"
-#include "catalog/heap.h"
-#include "catalog/namespace.h"
-#include "commands/tablecmds.h"
-#include "commands/trigger.h"
-#include "executor/execdebug.h"
-#include "executor/execdefs.h"
-#include "miscadmin.h"
-#include "optimizer/var.h"
-#include "parser/parsetree.h"
-#include "utils/acl.h"
-#include "utils/lsyscache.h"
-
-
-/* decls for local routines only used within this module */
-static TupleDesc InitPlan(CmdType operation,
- Query *parseTree,
- Plan *plan,
- EState *estate);
-static void initResultRelInfo(ResultRelInfo *resultRelInfo,
- Index resultRelationIndex,
- List *rangeTable,
- CmdType operation);
-static void EndPlan(Plan *plan, EState *estate);
-static TupleTableSlot *ExecutePlan(EState *estate, Plan *plan,
- CmdType operation,
- long numberTuples,
- ScanDirection direction,
- DestReceiver *destfunc);
-static void ExecRetrieve(TupleTableSlot *slot,
- DestReceiver *destfunc,
- EState *estate);
-static void ExecAppend(TupleTableSlot *slot, ItemPointer tupleid,
- EState *estate);
-static void ExecDelete(TupleTableSlot *slot, ItemPointer tupleid,
- EState *estate);
-static void ExecReplace(TupleTableSlot *slot, ItemPointer tupleid,
- EState *estate);
-static TupleTableSlot *EvalPlanQualNext(EState *estate);
-static void EndEvalPlanQual(EState *estate);
-static void ExecCheckQueryPerms(CmdType operation, Query *parseTree,
- Plan *plan);
-static void ExecCheckPlanPerms(Plan *plan, List *rangeTable,
- CmdType operation);
-static void ExecCheckRTPerms(List *rangeTable, CmdType operation);
-static void ExecCheckRTEPerms(RangeTblEntry *rte, CmdType operation);
-
-/* end of local decls */
-
-
-/* ----------------------------------------------------------------
- * ExecutorStart
- *
- * This routine must be called at the beginning of any execution of any
- * query plan
- *
- * returns a TupleDesc which describes the attributes of the tuples to
- * be returned by the query. (Same value is saved in queryDesc)
- *
- * NB: the CurrentMemoryContext when this is called must be the context
- * to be used as the per-query context for the query plan. ExecutorRun()
- * and ExecutorEnd() must be called in this same memory context.
- * ----------------------------------------------------------------
- */
-TupleDesc
-ExecutorStart(QueryDesc *queryDesc, EState *estate)
-{
- TupleDesc result;
-
- /* sanity checks */
- Assert(queryDesc != NULL);
-
- if (queryDesc->plantree->nParamExec > 0)
- {
- estate->es_param_exec_vals = (ParamExecData *)
- palloc(queryDesc->plantree->nParamExec * sizeof(ParamExecData));
- MemSet(estate->es_param_exec_vals, 0,
- queryDesc->plantree->nParamExec * sizeof(ParamExecData));
- }
-
- /*
- * Make our own private copy of the current query snapshot data.
- *
- * This "freezes" our idea of which tuples are good and which are not
- * for the life of this query, even if it outlives the current command
- * and current snapshot.
- */
- estate->es_snapshot = CopyQuerySnapshot();
-
- /*
- * Initialize the plan
- */
- result = InitPlan(queryDesc->operation,
- queryDesc->parsetree,
- queryDesc->plantree,
- estate);
-
- queryDesc->tupDesc = result;
-
- return result;
-}
-
-/* ----------------------------------------------------------------
- * ExecutorRun
- *
- * This is the main routine of the executor module. It accepts
- * the query descriptor from the traffic cop and executes the
- * query plan.
- *
- * ExecutorStart must have been called already.
- *
- * If direction is NoMovementScanDirection then nothing is done
- * except to start up/shut down the destination. Otherwise,
- * we retrieve up to 'count' tuples in the specified direction.
- *
- * Note: count = 0 is interpreted as no portal limit, e.g. run to
- * completion.
- *
- * ----------------------------------------------------------------
- */
-TupleTableSlot *
-ExecutorRun(QueryDesc *queryDesc, EState *estate,
- ScanDirection direction, long count)
-{
- CmdType operation;
- Plan *plan;
- CommandDest dest;
- DestReceiver *destfunc;
- TupleTableSlot *result;
-
- /*
- * sanity checks
- */
- Assert(queryDesc != NULL);
-
- /*
- * extract information from the query descriptor and the query
- * feature.
- */
- operation = queryDesc->operation;
- plan = queryDesc->plantree;
- dest = queryDesc->dest;
-
- /*
- * startup tuple receiver
- */
- estate->es_processed = 0;
- estate->es_lastoid = InvalidOid;
-
- destfunc = DestToFunction(dest);
- (*destfunc->setup) (destfunc, (int) operation,
- queryDesc->portalName, queryDesc->tupDesc);
-
- /*
- * run plan
- */
- if (direction == NoMovementScanDirection)
- result = NULL;
- else
- result = ExecutePlan(estate,
- plan,
- operation,
- count,
- direction,
- destfunc);
-
- /*
- * shutdown receiver
- */
- (*destfunc->cleanup) (destfunc);
-
- return result;
-}
-
-/* ----------------------------------------------------------------
- * ExecutorEnd
- *
- * This routine must be called at the end of execution of any
- * query plan
- * ----------------------------------------------------------------
- */
-void
-ExecutorEnd(QueryDesc *queryDesc, EState *estate)
-{
- /* sanity checks */
- Assert(queryDesc != NULL);
-
- EndPlan(queryDesc->plantree, estate);
-
- if (estate->es_snapshot != NULL)
- {
- if (estate->es_snapshot->xcnt > 0)
- pfree(estate->es_snapshot->xip);
- pfree(estate->es_snapshot);
- estate->es_snapshot = NULL;
- }
-
- if (estate->es_param_exec_vals != NULL)
- {
- pfree(estate->es_param_exec_vals);
- estate->es_param_exec_vals = NULL;
- }
-}
-
-
-/*
- * ExecCheckQueryPerms
- * Check access permissions for all relations referenced in a query.
- */
-static void
-ExecCheckQueryPerms(CmdType operation, Query *parseTree, Plan *plan)
-{
- /*
- * Check RTEs in the query's primary rangetable.
- */
- ExecCheckRTPerms(parseTree->rtable, operation);
-
- /*
- * Search for subplans and APPEND nodes to check their rangetables.
- */
- ExecCheckPlanPerms(plan, parseTree->rtable, operation);
-}
-
-/*
- * ExecCheckPlanPerms
- * Recursively scan the plan tree to check access permissions in
- * subplans.
- */
-static void
-ExecCheckPlanPerms(Plan *plan, List *rangeTable, CmdType operation)
-{
- List *subp;
-
- if (plan == NULL)
- return;
-
- /* Check subplans, which we assume are plain SELECT queries */
-
- foreach(subp, plan->initPlan)
- {
- SubPlan *subplan = (SubPlan *) lfirst(subp);
-
- ExecCheckRTPerms(subplan->rtable, CMD_SELECT);
- ExecCheckPlanPerms(subplan->plan, subplan->rtable, CMD_SELECT);
- }
- foreach(subp, plan->subPlan)
- {
- SubPlan *subplan = (SubPlan *) lfirst(subp);
-
- ExecCheckRTPerms(subplan->rtable, CMD_SELECT);
- ExecCheckPlanPerms(subplan->plan, subplan->rtable, CMD_SELECT);
- }
-
- /* Check lower plan nodes */
-
- ExecCheckPlanPerms(plan->lefttree, rangeTable, operation);
- ExecCheckPlanPerms(plan->righttree, rangeTable, operation);
-
- /* Do node-type-specific checks */
-
- switch (nodeTag(plan))
- {
- case T_SubqueryScan:
- {
- SubqueryScan *scan = (SubqueryScan *) plan;
- RangeTblEntry *rte;
-
- /* Recursively check the subquery */
- rte = rt_fetch(scan->scan.scanrelid, rangeTable);
- Assert(rte->rtekind == RTE_SUBQUERY);
- ExecCheckQueryPerms(operation, rte->subquery, scan->subplan);
- break;
- }
- case T_Append:
- {
- Append *app = (Append *) plan;
- List *appendplans;
-
- foreach(appendplans, app->appendplans)
- {
- ExecCheckPlanPerms((Plan *) lfirst(appendplans),
- rangeTable,
- operation);
- }
- break;
- }
-
- default:
- break;
- }
-}
-
-/*
- * ExecCheckRTPerms
- * Check access permissions for all relations listed in a range table.
- */
-static void
-ExecCheckRTPerms(List *rangeTable, CmdType operation)
-{
- List *lp;
-
- foreach(lp, rangeTable)
- {
- RangeTblEntry *rte = lfirst(lp);
-
- ExecCheckRTEPerms(rte, operation);
- }
-}
-
-/*
- * ExecCheckRTEPerms
- * Check access permissions for a single RTE.
- */
-static void
-ExecCheckRTEPerms(RangeTblEntry *rte, CmdType operation)
-{
- Oid relOid;
- Oid userid;
- AclResult aclcheck_result;
-
- /*
- * Only plain-relation RTEs need to be checked here. Subquery RTEs
- * will be checked when ExecCheckPlanPerms finds the SubqueryScan node,
- * and function RTEs are checked by init_fcache when the function is
- * prepared for execution. Join and special RTEs need no checks.
- */
- if (rte->rtekind != RTE_RELATION)
- return;
-
- relOid = rte->relid;
-
- /*
- * userid to check as: current user unless we have a setuid
- * indication.
- *
- * Note: GetUserId() is presently fast enough that there's no harm in
- * calling it separately for each RTE. If that stops being true, we
- * could call it once in ExecCheckQueryPerms and pass the userid down
- * from there. But for now, no need for the extra clutter.
- */
- userid = rte->checkAsUser ? rte->checkAsUser : GetUserId();
-
-#define CHECK(MODE) pg_class_aclcheck(relOid, userid, MODE)
-
- if (rte->checkForRead)
- {
- aclcheck_result = CHECK(ACL_SELECT);
- if (aclcheck_result != ACLCHECK_OK)
- aclcheck_error(aclcheck_result, get_rel_name(relOid));
- }
-
- if (rte->checkForWrite)
- {
- /*
- * Note: write access in a SELECT context means SELECT FOR UPDATE.
- * Right now we don't distinguish that from true update as far as
- * permissions checks are concerned.
- */
- switch (operation)
- {
- case CMD_INSERT:
- aclcheck_result = CHECK(ACL_INSERT);
- break;
- case CMD_SELECT:
- case CMD_UPDATE:
- aclcheck_result = CHECK(ACL_UPDATE);
- break;
- case CMD_DELETE:
- aclcheck_result = CHECK(ACL_DELETE);
- break;
- default:
- elog(ERROR, "ExecCheckRTEPerms: bogus operation %d",
- operation);
- aclcheck_result = ACLCHECK_OK; /* keep compiler quiet */
- break;
- }
- if (aclcheck_result != ACLCHECK_OK)
- aclcheck_error(aclcheck_result, get_rel_name(relOid));
- }
-}
-
-
-/* ===============================================================
- * ===============================================================
- static routines follow
- * ===============================================================
- * ===============================================================
- */
-
-typedef struct execRowMark
-{
- Relation relation;
- Index rti;
- char resname[32];
-} execRowMark;
-
-typedef struct evalPlanQual
-{
- Plan *plan;
- Index rti;
- EState estate;
- struct evalPlanQual *free;
-} evalPlanQual;
-
-/* ----------------------------------------------------------------
- * InitPlan
- *
- * Initializes the query plan: open files, allocate storage
- * and start up the rule manager
- * ----------------------------------------------------------------
- */
-static TupleDesc
-InitPlan(CmdType operation, Query *parseTree, Plan *plan, EState *estate)
-{
- List *rangeTable;
- Relation intoRelationDesc;
- TupleDesc tupType;
-
- /*
- * Do permissions checks.
- */
- ExecCheckQueryPerms(operation, parseTree, plan);
-
- /*
- * get information from query descriptor
- */
- rangeTable = parseTree->rtable;
-
- /*
- * initialize the node's execution state
- */
- estate->es_range_table = rangeTable;
-
- /*
- * if there is a result relation, initialize result relation stuff
- */
- if (parseTree->resultRelation != 0 && operation != CMD_SELECT)
- {
- List *resultRelations = parseTree->resultRelations;
- int numResultRelations;
- ResultRelInfo *resultRelInfos;
-
- if (resultRelations != NIL)
- {
- /*
- * Multiple result relations (due to inheritance)
- * parseTree->resultRelations identifies them all
- */
- ResultRelInfo *resultRelInfo;
-
- numResultRelations = length(resultRelations);
- resultRelInfos = (ResultRelInfo *)
- palloc(numResultRelations * sizeof(ResultRelInfo));
- resultRelInfo = resultRelInfos;
- while (resultRelations != NIL)
- {
- initResultRelInfo(resultRelInfo,
- lfirsti(resultRelations),
- rangeTable,
- operation);
- resultRelInfo++;
- resultRelations = lnext(resultRelations);
- }
- }
- else
- {
- /*
- * Single result relation identified by
- * parseTree->resultRelation
- */
- numResultRelations = 1;
- resultRelInfos = (ResultRelInfo *) palloc(sizeof(ResultRelInfo));
- initResultRelInfo(resultRelInfos,
- parseTree->resultRelation,
- rangeTable,
- operation);
- }
-
- estate->es_result_relations = resultRelInfos;
- estate->es_num_result_relations = numResultRelations;
- /* Initialize to first or only result rel */
- estate->es_result_relation_info = resultRelInfos;
- }
- else
- {
- /*
- * if no result relation, then set state appropriately
- */
- estate->es_result_relations = NULL;
- estate->es_num_result_relations = 0;
- estate->es_result_relation_info = NULL;
- }
-
- /*
- * Have to lock relations selected for update
- */
- estate->es_rowMark = NIL;
- if (parseTree->rowMarks != NIL)
- {
- List *l;
-
- foreach(l, parseTree->rowMarks)
- {
- Index rti = lfirsti(l);
- Oid relid = getrelid(rti, rangeTable);
- Relation relation;
- execRowMark *erm;
-
- relation = heap_open(relid, RowShareLock);
- erm = (execRowMark *) palloc(sizeof(execRowMark));
- erm->relation = relation;
- erm->rti = rti;
- sprintf(erm->resname, "ctid%u", rti);
- estate->es_rowMark = lappend(estate->es_rowMark, erm);
- }
- }
-
- /*
- * initialize the executor "tuple" table. We need slots for all the
- * plan nodes, plus possibly output slots for the junkfilter(s). At
- * this point we aren't sure if we need junkfilters, so just add slots
- * for them unconditionally.
- */
- {
- int nSlots = ExecCountSlotsNode(plan);
-
- if (parseTree->resultRelations != NIL)
- nSlots += length(parseTree->resultRelations);
- else
- nSlots += 1;
- estate->es_tupleTable = ExecCreateTupleTable(nSlots);
- }
-
- /* mark EvalPlanQual not active */
- estate->es_origPlan = plan;
- estate->es_evalPlanQual = NULL;
- estate->es_evTuple = NULL;
- estate->es_evTupleNull = NULL;
- estate->es_useEvalPlan = false;
-
- /*
- * initialize the private state information for all the nodes in the
- * query tree. This opens files, allocates storage and leaves us
- * ready to start processing tuples.
- */
- ExecInitNode(plan, estate, NULL);
-
- /*
- * Get the tuple descriptor describing the type of tuples to return.
- * (this is especially important if we are creating a relation with
- * "retrieve into")
- */
- tupType = ExecGetTupType(plan); /* tuple descriptor */
-
- /*
- * Initialize the junk filter if needed. SELECT and INSERT queries
- * need a filter if there are any junk attrs in the tlist. UPDATE and
- * DELETE always need one, since there's always a junk 'ctid'
- * attribute present --- no need to look first.
- */
- {
- bool junk_filter_needed = false;
- List *tlist;
-
- switch (operation)
- {
- case CMD_SELECT:
- case CMD_INSERT:
- foreach(tlist, plan->targetlist)
- {
- TargetEntry *tle = (TargetEntry *) lfirst(tlist);
-
- if (tle->resdom->resjunk)
- {
- junk_filter_needed = true;
- break;
- }
- }
- break;
- case CMD_UPDATE:
- case CMD_DELETE:
- junk_filter_needed = true;
- break;
- default:
- break;
- }
-
- if (junk_filter_needed)
- {
- /*
- * If there are multiple result relations, each one needs its
- * own junk filter. Note this is only possible for
- * UPDATE/DELETE, so we can't be fooled by some needing a
- * filter and some not.
- */
- if (parseTree->resultRelations != NIL)
- {
- List *subplans;
- ResultRelInfo *resultRelInfo;
-
- /* Top plan had better be an Append here. */
- Assert(IsA(plan, Append));
- Assert(((Append *) plan)->isTarget);
- subplans = ((Append *) plan)->appendplans;
- Assert(length(subplans) == estate->es_num_result_relations);
- resultRelInfo = estate->es_result_relations;
- while (subplans != NIL)
- {
- Plan *subplan = (Plan *) lfirst(subplans);
- JunkFilter *j;
-
- j = ExecInitJunkFilter(subplan->targetlist,
- ExecGetTupType(subplan),
- ExecAllocTableSlot(estate->es_tupleTable));
- resultRelInfo->ri_junkFilter = j;
- resultRelInfo++;
- subplans = lnext(subplans);
- }
-
- /*
- * Set active junkfilter too; at this point ExecInitAppend
- * has already selected an active result relation...
- */
- estate->es_junkFilter =
- estate->es_result_relation_info->ri_junkFilter;
- }
- else
- {
- /* Normal case with just one JunkFilter */
- JunkFilter *j;
-
- j = ExecInitJunkFilter(plan->targetlist,
- tupType,
- ExecAllocTableSlot(estate->es_tupleTable));
- estate->es_junkFilter = j;
- if (estate->es_result_relation_info)
- estate->es_result_relation_info->ri_junkFilter = j;
-
- /* For SELECT, want to return the cleaned tuple type */
- if (operation == CMD_SELECT)
- tupType = j->jf_cleanTupType;
- }
- }
- else
- estate->es_junkFilter = NULL;
- }
-
- /*
- * initialize the "into" relation
- */
- intoRelationDesc = (Relation) NULL;
-
- if (operation == CMD_SELECT)
- {
- if (!parseTree->isPortal)
- {
- /*
- * a select into table --- need to create the "into" table
- */
- if (parseTree->into != NULL)
- {
- char *intoName;
- Oid namespaceId;
- Oid intoRelationId;
- TupleDesc tupdesc;
-
- /*
- * find namespace to create in, check permissions
- */
- intoName = parseTree->into->relname;
- namespaceId = RangeVarGetCreationNamespace(parseTree->into);
-
- if (!isTempNamespace(namespaceId))
- {
- AclResult aclresult;
-
- aclresult = pg_namespace_aclcheck(namespaceId, GetUserId(),
- ACL_CREATE);
- if (aclresult != ACLCHECK_OK)
- aclcheck_error(aclresult,
- get_namespace_name(namespaceId));
- }
-
- /*
- * have to copy tupType to get rid of constraints
- */
- tupdesc = CreateTupleDescCopy(tupType);
-
- intoRelationId =
- heap_create_with_catalog(intoName,
- namespaceId,
- tupdesc,
- RELKIND_RELATION,
- false,
- true,
- allowSystemTableMods);
-
- FreeTupleDesc(tupdesc);
-
- /*
- * Advance command counter so that the newly-created
- * relation's catalog tuples will be visible to heap_open.
- */
- CommandCounterIncrement();
-
- /*
- * If necessary, create a TOAST table for the into
- * relation. Note that AlterTableCreateToastTable ends
- * with CommandCounterIncrement(), so that the TOAST table
- * will be visible for insertion.
- */
- AlterTableCreateToastTable(intoRelationId, true);
-
- intoRelationDesc = heap_open(intoRelationId,
- AccessExclusiveLock);
- }
- }
- }
-
- estate->es_into_relation_descriptor = intoRelationDesc;
-
- return tupType;
-}
-
-/*
- * Initialize ResultRelInfo data for one result relation
- */
-static void
-initResultRelInfo(ResultRelInfo *resultRelInfo,
- Index resultRelationIndex,
- List *rangeTable,
- CmdType operation)
-{
- Oid resultRelationOid;
- Relation resultRelationDesc;
-
- resultRelationOid = getrelid(resultRelationIndex, rangeTable);
- resultRelationDesc = heap_open(resultRelationOid, RowExclusiveLock);
-
- switch (resultRelationDesc->rd_rel->relkind)
- {
- case RELKIND_SEQUENCE:
- elog(ERROR, "You can't change sequence relation %s",
- RelationGetRelationName(resultRelationDesc));
- break;
- case RELKIND_TOASTVALUE:
- elog(ERROR, "You can't change toast relation %s",
- RelationGetRelationName(resultRelationDesc));
- break;
- case RELKIND_VIEW:
- elog(ERROR, "You can't change view relation %s",
- RelationGetRelationName(resultRelationDesc));
- break;
- }
-
- MemSet(resultRelInfo, 0, sizeof(ResultRelInfo));
- resultRelInfo->type = T_ResultRelInfo;
- resultRelInfo->ri_RangeTableIndex = resultRelationIndex;
- resultRelInfo->ri_RelationDesc = resultRelationDesc;
- resultRelInfo->ri_NumIndices = 0;
- resultRelInfo->ri_IndexRelationDescs = NULL;
- resultRelInfo->ri_IndexRelationInfo = NULL;
- resultRelInfo->ri_TrigDesc = resultRelationDesc->trigdesc;
- resultRelInfo->ri_TrigFunctions = NULL;
- resultRelInfo->ri_ConstraintExprs = NULL;
- resultRelInfo->ri_junkFilter = NULL;
-
- /*
- * If there are indices on the result relation, open them and save
- * descriptors in the result relation info, so that we can add new
- * index entries for the tuples we add/update. We need not do this
- * for a DELETE, however, since deletion doesn't affect indexes.
- */
- if (resultRelationDesc->rd_rel->relhasindex &&
- operation != CMD_DELETE)
- ExecOpenIndices(resultRelInfo);
-}
-
-/* ----------------------------------------------------------------
- * EndPlan
- *
- * Cleans up the query plan -- closes files and free up storages
- * ----------------------------------------------------------------
- */
-static void
-EndPlan(Plan *plan, EState *estate)
-{
- ResultRelInfo *resultRelInfo;
- int i;
- List *l;
-
- /*
- * shut down any PlanQual processing we were doing
- */
- if (estate->es_evalPlanQual != NULL)
- EndEvalPlanQual(estate);
-
- /*
- * shut down the node-type-specific query processing
- */
- ExecEndNode(plan, NULL);
-
- /*
- * destroy the executor "tuple" table.
- */
- ExecDropTupleTable(estate->es_tupleTable, true);
- estate->es_tupleTable = NULL;
-
- /*
- * close the result relation(s) if any, but hold locks until xact
- * commit. Also clean up junkfilters if present.
- */
- resultRelInfo = estate->es_result_relations;
- for (i = estate->es_num_result_relations; i > 0; i--)
- {
- /* Close indices and then the relation itself */
- ExecCloseIndices(resultRelInfo);
- heap_close(resultRelInfo->ri_RelationDesc, NoLock);
- /* Delete the junkfilter if any */
- if (resultRelInfo->ri_junkFilter != NULL)
- ExecFreeJunkFilter(resultRelInfo->ri_junkFilter);
- resultRelInfo++;
- }
-
- /*
- * close the "into" relation if necessary, again keeping lock
- */
- if (estate->es_into_relation_descriptor != NULL)
- heap_close(estate->es_into_relation_descriptor, NoLock);
-
- /*
- * There might be a junkfilter without a result relation.
- */
- if (estate->es_num_result_relations == 0 &&
- estate->es_junkFilter != NULL)
- {
- ExecFreeJunkFilter(estate->es_junkFilter);
- estate->es_junkFilter = NULL;
- }
-
- /*
- * close any relations selected FOR UPDATE, again keeping locks
- */
- foreach(l, estate->es_rowMark)
- {
- execRowMark *erm = lfirst(l);
-
- heap_close(erm->relation, NoLock);
- }
-}
-
-/* ----------------------------------------------------------------
- * ExecutePlan
- *
- * processes the query plan to retrieve 'numberTuples' tuples in the
- * direction specified.
- * Retrieves all tuples if numberTuples is 0
- *
- * result is either a slot containing the last tuple in the case
- * of a RETRIEVE or NULL otherwise.
- *
- * Note: the ctid attribute is a 'junk' attribute that is removed before the
- * user can see it
- * ----------------------------------------------------------------
- */
-static TupleTableSlot *
-ExecutePlan(EState *estate,
- Plan *plan,
- CmdType operation,
- long numberTuples,
- ScanDirection direction,
- DestReceiver *destfunc)
-{
- JunkFilter *junkfilter;
- TupleTableSlot *slot;
- ItemPointer tupleid = NULL;
- ItemPointerData tuple_ctid;
- long current_tuple_count;
- TupleTableSlot *result;
-
- /*
- * initialize local variables
- */
- slot = NULL;
- current_tuple_count = 0;
- result = NULL;
-
- /*
- * Set the direction.
- */
- estate->es_direction = direction;
-
- /*
- * Loop until we've processed the proper number of tuples from the
- * plan.
- */
-
- for (;;)
- {
- /* Reset the per-output-tuple exprcontext */
- ResetPerTupleExprContext(estate);
-
- /*
- * Execute the plan and obtain a tuple
- */
-lnext: ;
- if (estate->es_useEvalPlan)
- {
- slot = EvalPlanQualNext(estate);
- if (TupIsNull(slot))
- slot = ExecProcNode(plan, NULL);
- }
- else
- slot = ExecProcNode(plan, NULL);
-
- /*
- * if the tuple is null, then we assume there is nothing more to
- * process so we just return null...
- */
- if (TupIsNull(slot))
- {
- result = NULL;
- break;
- }
-
- /*
- * if we have a junk filter, then project a new tuple with the
- * junk removed.
- *
- * Store this new "clean" tuple in the junkfilter's resultSlot.
- * (Formerly, we stored it back over the "dirty" tuple, which is
- * WRONG because that tuple slot has the wrong descriptor.)
- *
- * Also, extract all the junk information we need.
- */
- if ((junkfilter = estate->es_junkFilter) != (JunkFilter *) NULL)
- {
- Datum datum;
- HeapTuple newTuple;
- bool isNull;
-
- /*
- * extract the 'ctid' junk attribute.
- */
- if (operation == CMD_UPDATE || operation == CMD_DELETE)
- {
- if (!ExecGetJunkAttribute(junkfilter,
- slot,
- "ctid",
- &datum,
- &isNull))
- elog(ERROR, "ExecutePlan: NO (junk) `ctid' was found!");
-
- /* shouldn't ever get a null result... */
- if (isNull)
- elog(ERROR, "ExecutePlan: (junk) `ctid' is NULL!");
-
- tupleid = (ItemPointer) DatumGetPointer(datum);
- tuple_ctid = *tupleid; /* make sure we don't free the
- * ctid!! */
- tupleid = &tuple_ctid;
- }
- else if (estate->es_rowMark != NIL)
- {
- List *l;
-
- lmark: ;
- foreach(l, estate->es_rowMark)
- {
- execRowMark *erm = lfirst(l);
- Buffer buffer;
- HeapTupleData tuple;
- TupleTableSlot *newSlot;
- int test;
-
- if (!ExecGetJunkAttribute(junkfilter,
- slot,
- erm->resname,
- &datum,
- &isNull))
- elog(ERROR, "ExecutePlan: NO (junk) `%s' was found!",
- erm->resname);
-
- /* shouldn't ever get a null result... */
- if (isNull)
- elog(ERROR, "ExecutePlan: (junk) `%s' is NULL!",
- erm->resname);
-
- tuple.t_self = *((ItemPointer) DatumGetPointer(datum));
- test = heap_mark4update(erm->relation, &tuple, &buffer,
- estate->es_snapshot->curcid);
- ReleaseBuffer(buffer);
- switch (test)
- {
- case HeapTupleSelfUpdated:
- case HeapTupleMayBeUpdated:
- break;
-
- case HeapTupleUpdated:
- if (XactIsoLevel == XACT_SERIALIZABLE)
- elog(ERROR, "Can't serialize access due to concurrent update");
- if (!(ItemPointerEquals(&(tuple.t_self),
- (ItemPointer) DatumGetPointer(datum))))
- {
- newSlot = EvalPlanQual(estate, erm->rti, &(tuple.t_self));
- if (!(TupIsNull(newSlot)))
- {
- slot = newSlot;
- estate->es_useEvalPlan = true;
- goto lmark;
- }
- }
-
- /*
- * if tuple was deleted or PlanQual failed for
- * updated tuple - we must not return this
- * tuple!
- */
- goto lnext;
-
- default:
- elog(ERROR, "Unknown status %u from heap_mark4update", test);
- return (NULL);
- }
- }
- }
-
- /*
- * Finally create a new "clean" tuple with all junk attributes
- * removed
- */
- newTuple = ExecRemoveJunk(junkfilter, slot);
-
- slot = ExecStoreTuple(newTuple, /* tuple to store */
- junkfilter->jf_resultSlot, /* dest slot */
- InvalidBuffer, /* this tuple has no
- * buffer */
- true); /* tuple should be pfreed */
- } /* if (junkfilter... */
-
- /*
- * now that we have a tuple, do the appropriate thing with it..
- * either return it to the user, add it to a relation someplace,
- * delete it from a relation, or modify some of its attributes.
- */
-
- switch (operation)
- {
- case CMD_SELECT:
- ExecRetrieve(slot, /* slot containing tuple */
- destfunc, /* destination's tuple-receiver
- * obj */
- estate); /* */
- result = slot;
- break;
-
- case CMD_INSERT:
- ExecAppend(slot, tupleid, estate);
- result = NULL;
- break;
-
- case CMD_DELETE:
- ExecDelete(slot, tupleid, estate);
- result = NULL;
- break;
-
- case CMD_UPDATE:
- ExecReplace(slot, tupleid, estate);
- result = NULL;
- break;
-
- default:
- elog(LOG, "ExecutePlan: unknown operation in queryDesc");
- result = NULL;
- break;
- }
-
- /*
- * check our tuple count.. if we've processed the proper number
- * then quit, else loop again and process more tuples..
- */
- current_tuple_count++;
- if (numberTuples == current_tuple_count)
- break;
- }
-
- /*
- * here, result is either a slot containing a tuple in the case of a
- * RETRIEVE or NULL otherwise.
- */
- return result;
-}
-
-/* ----------------------------------------------------------------
- * ExecRetrieve
- *
- * RETRIEVEs are easy.. we just pass the tuple to the appropriate
- * print function. The only complexity is when we do a
- * "retrieve into", in which case we insert the tuple into
- * the appropriate relation (note: this is a newly created relation
- * so we don't need to worry about indices or locks.)
- * ----------------------------------------------------------------
- */
-static void
-ExecRetrieve(TupleTableSlot *slot,
- DestReceiver *destfunc,
- EState *estate)
-{
- HeapTuple tuple;
- TupleDesc attrtype;
-
- /*
- * get the heap tuple out of the tuple table slot
- */
- tuple = slot->val;
- attrtype = slot->ttc_tupleDescriptor;
-
- /*
- * insert the tuple into the "into relation"
- */
- if (estate->es_into_relation_descriptor != NULL)
- {
- heap_insert(estate->es_into_relation_descriptor, tuple,
- estate->es_snapshot->curcid);
- IncrAppended();
- }
-
- /*
- * send the tuple to the front end (or the screen)
- */
- (*destfunc->receiveTuple) (tuple, attrtype, destfunc);
- IncrRetrieved();
- (estate->es_processed)++;
-}
-
-/* ----------------------------------------------------------------
- * ExecAppend
- *
- * APPENDs are trickier.. we have to insert the tuple into
- * the base relation and insert appropriate tuples into the
- * index relations.
- * ----------------------------------------------------------------
- */
-
-static void
-ExecAppend(TupleTableSlot *slot,
- ItemPointer tupleid,
- EState *estate)
-{
- HeapTuple tuple;
- ResultRelInfo *resultRelInfo;
- Relation resultRelationDesc;
- int numIndices;
- Oid newId;
-
- /*
- * get the heap tuple out of the tuple table slot
- */
- tuple = slot->val;
-
- /*
- * get information on the (current) result relation
- */
- resultRelInfo = estate->es_result_relation_info;
- resultRelationDesc = resultRelInfo->ri_RelationDesc;
-
- /* BEFORE ROW INSERT Triggers */
- if (resultRelInfo->ri_TrigDesc &&
- resultRelInfo->ri_TrigDesc->n_before_row[TRIGGER_EVENT_INSERT] > 0)
- {
- HeapTuple newtuple;
-
- newtuple = ExecBRInsertTriggers(estate, resultRelInfo, tuple);
-
- if (newtuple == NULL) /* "do nothing" */
- return;
-
- if (newtuple != tuple) /* modified by Trigger(s) */
- {
- /*
- * Insert modified tuple into tuple table slot, replacing the
- * original. We assume that it was allocated in per-tuple
- * memory context, and therefore will go away by itself. The
- * tuple table slot should not try to clear it.
- */
- ExecStoreTuple(newtuple, slot, InvalidBuffer, false);
- tuple = newtuple;
- }
- }
-
- /*
- * Check the constraints of the tuple
- */
- if (resultRelationDesc->rd_att->constr)
- ExecConstraints("ExecAppend", resultRelInfo, slot, estate);
-
- /*
- * insert the tuple
- */
- newId = heap_insert(resultRelationDesc, tuple,
- estate->es_snapshot->curcid);
-
- IncrAppended();
- (estate->es_processed)++;
- estate->es_lastoid = newId;
- setLastTid(&(tuple->t_self));
-
- /*
- * process indices
- *
- * Note: heap_insert adds a new tuple to a relation. As a side effect,
- * the tupleid of the new tuple is placed in the new tuple's t_ctid
- * field.
- */
- numIndices = resultRelInfo->ri_NumIndices;
- if (numIndices > 0)
- ExecInsertIndexTuples(slot, &(tuple->t_self), estate, false);
-
- /* AFTER ROW INSERT Triggers */
- if (resultRelInfo->ri_TrigDesc)
- ExecARInsertTriggers(estate, resultRelInfo, tuple);
-}
-
-/* ----------------------------------------------------------------
- * ExecDelete
- *
- * DELETE is like append, we delete the tuple and its
- * index tuples.
- * ----------------------------------------------------------------
- */
-static void
-ExecDelete(TupleTableSlot *slot,
- ItemPointer tupleid,
- EState *estate)
-{
- ResultRelInfo *resultRelInfo;
- Relation resultRelationDesc;
- ItemPointerData ctid;
- int result;
-
- /*
- * get information on the (current) result relation
- */
- resultRelInfo = estate->es_result_relation_info;
- resultRelationDesc = resultRelInfo->ri_RelationDesc;
-
- /* BEFORE ROW DELETE Triggers */
- if (resultRelInfo->ri_TrigDesc &&
- resultRelInfo->ri_TrigDesc->n_before_row[TRIGGER_EVENT_DELETE] > 0)
- {
- bool dodelete;
-
- dodelete = ExecBRDeleteTriggers(estate, resultRelInfo, tupleid);
-
- if (!dodelete) /* "do nothing" */
- return;
- }
-
- /*
- * delete the tuple
- */
-ldelete:;
- result = heap_delete(resultRelationDesc, tupleid,
- &ctid,
- estate->es_snapshot->curcid);
- switch (result)
- {
- case HeapTupleSelfUpdated:
- return;
-
- case HeapTupleMayBeUpdated:
- break;
-
- case HeapTupleUpdated:
- if (XactIsoLevel == XACT_SERIALIZABLE)
- elog(ERROR, "Can't serialize access due to concurrent update");
- else if (!(ItemPointerEquals(tupleid, &ctid)))
- {
- TupleTableSlot *epqslot = EvalPlanQual(estate,
- resultRelInfo->ri_RangeTableIndex, &ctid);
-
- if (!TupIsNull(epqslot))
- {
- *tupleid = ctid;
- goto ldelete;
- }
- }
- /* tuple already deleted; nothing to do */
- return;
-
- default:
- elog(ERROR, "Unknown status %u from heap_delete", result);
- return;
- }
-
- IncrDeleted();
- (estate->es_processed)++;
-
- /*
- * Note: Normally one would think that we have to delete index tuples
- * associated with the heap tuple now..
- *
- * ... but in POSTGRES, we have no need to do this because the vacuum
- * daemon automatically opens an index scan and deletes index tuples
- * when it finds deleted heap tuples. -cim 9/27/89
- */
-
- /* AFTER ROW DELETE Triggers */
- if (resultRelInfo->ri_TrigDesc)
- ExecARDeleteTriggers(estate, resultRelInfo, tupleid);
-}
-
-/* ----------------------------------------------------------------
- * ExecReplace
- *
- * note: we can't run replace queries with transactions
- * off because replaces are actually appends and our
- * scan will mistakenly loop forever, replacing the tuple
- * it just appended.. This should be fixed but until it
- * is, we don't want to get stuck in an infinite loop
- * which corrupts your database..
- * ----------------------------------------------------------------
- */
-static void
-ExecReplace(TupleTableSlot *slot,
- ItemPointer tupleid,
- EState *estate)
-{
- HeapTuple tuple;
- ResultRelInfo *resultRelInfo;
- Relation resultRelationDesc;
- ItemPointerData ctid;
- int result;
- int numIndices;
-
- /*
- * abort the operation if not running transactions
- */
- if (IsBootstrapProcessingMode())
- {
- elog(WARNING, "ExecReplace: replace can't run without transactions");
- return;
- }
-
- /*
- * get the heap tuple out of the tuple table slot
- */
- tuple = slot->val;
-
- /*
- * get information on the (current) result relation
- */
- resultRelInfo = estate->es_result_relation_info;
- resultRelationDesc = resultRelInfo->ri_RelationDesc;
-
- /* BEFORE ROW UPDATE Triggers */
- if (resultRelInfo->ri_TrigDesc &&
- resultRelInfo->ri_TrigDesc->n_before_row[TRIGGER_EVENT_UPDATE] > 0)
- {
- HeapTuple newtuple;
-
- newtuple = ExecBRUpdateTriggers(estate, resultRelInfo,
- tupleid, tuple);
-
- if (newtuple == NULL) /* "do nothing" */
- return;
-
- if (newtuple != tuple) /* modified by Trigger(s) */
- {
- /*
- * Insert modified tuple into tuple table slot, replacing the
- * original. We assume that it was allocated in per-tuple
- * memory context, and therefore will go away by itself. The
- * tuple table slot should not try to clear it.
- */
- ExecStoreTuple(newtuple, slot, InvalidBuffer, false);
- tuple = newtuple;
- }
- }
-
- /*
- * Check the constraints of the tuple
- *
- * If we generate a new candidate tuple after EvalPlanQual testing, we
- * must loop back here and recheck constraints. (We don't need to
- * redo triggers, however. If there are any BEFORE triggers then
- * trigger.c will have done mark4update to lock the correct tuple, so
- * there's no need to do them again.)
- */
-lreplace:;
- if (resultRelationDesc->rd_att->constr)
- ExecConstraints("ExecReplace", resultRelInfo, slot, estate);
-
- /*
- * replace the heap tuple
- */
- result = heap_update(resultRelationDesc, tupleid, tuple,
- &ctid,
- estate->es_snapshot->curcid);
- switch (result)
- {
- case HeapTupleSelfUpdated:
- return;
-
- case HeapTupleMayBeUpdated:
- break;
-
- case HeapTupleUpdated:
- if (XactIsoLevel == XACT_SERIALIZABLE)
- elog(ERROR, "Can't serialize access due to concurrent update");
- else if (!(ItemPointerEquals(tupleid, &ctid)))
- {
- TupleTableSlot *epqslot = EvalPlanQual(estate,
- resultRelInfo->ri_RangeTableIndex, &ctid);
-
- if (!TupIsNull(epqslot))
- {
- *tupleid = ctid;
- tuple = ExecRemoveJunk(estate->es_junkFilter, epqslot);
- slot = ExecStoreTuple(tuple,
- estate->es_junkFilter->jf_resultSlot,
- InvalidBuffer, true);
- goto lreplace;
- }
- }
- /* tuple already deleted; nothing to do */
- return;
-
- default:
- elog(ERROR, "Unknown status %u from heap_update", result);
- return;
- }
-
- IncrReplaced();
- (estate->es_processed)++;
-
- /*
- * Note: instead of having to update the old index tuples associated
- * with the heap tuple, all we do is form and insert new index tuples.
- * This is because replaces are actually deletes and inserts and index
- * tuple deletion is done automagically by the vacuum daemon. All we
- * do is insert new index tuples. -cim 9/27/89
- */
-
- /*
- * process indices
- *
- * heap_update updates a tuple in the base relation by invalidating it
- * and then appending a new tuple to the relation. As a side effect,
- * the tupleid of the new tuple is placed in the new tuple's t_ctid
- * field. So we now insert index tuples using the new tupleid stored
- * there.
- */
-
- numIndices = resultRelInfo->ri_NumIndices;
- if (numIndices > 0)
- ExecInsertIndexTuples(slot, &(tuple->t_self), estate, false);
-
- /* AFTER ROW UPDATE Triggers */
- if (resultRelInfo->ri_TrigDesc)
- ExecARUpdateTriggers(estate, resultRelInfo, tupleid, tuple);
-}
-
-static char *
-ExecRelCheck(ResultRelInfo *resultRelInfo,
- TupleTableSlot *slot, EState *estate)
-{
- Relation rel = resultRelInfo->ri_RelationDesc;
- int ncheck = rel->rd_att->constr->num_check;
- ConstrCheck *check = rel->rd_att->constr->check;
- ExprContext *econtext;
- MemoryContext oldContext;
- List *qual;
- int i;
-
- /*
- * If first time through for this result relation, build expression
- * nodetrees for rel's constraint expressions. Keep them in the
- * per-query memory context so they'll survive throughout the query.
- */
- if (resultRelInfo->ri_ConstraintExprs == NULL)
- {
- oldContext = MemoryContextSwitchTo(estate->es_query_cxt);
- resultRelInfo->ri_ConstraintExprs =
- (List **) palloc(ncheck * sizeof(List *));
- for (i = 0; i < ncheck; i++)
- {
- qual = (List *) stringToNode(check[i].ccbin);
- resultRelInfo->ri_ConstraintExprs[i] = qual;
- }
- MemoryContextSwitchTo(oldContext);
- }
-
- /*
- * We will use the EState's per-tuple context for evaluating
- * constraint expressions (creating it if it's not already there).
- */
- econtext = GetPerTupleExprContext(estate);
-
- /* Arrange for econtext's scan tuple to be the tuple under test */
- econtext->ecxt_scantuple = slot;
-
- /* And evaluate the constraints */
- for (i = 0; i < ncheck; i++)
- {
- qual = resultRelInfo->ri_ConstraintExprs[i];
-
- /*
- * NOTE: SQL92 specifies that a NULL result from a constraint
- * expression is not to be treated as a failure. Therefore, tell
- * ExecQual to return TRUE for NULL.
- */
- if (!ExecQual(qual, econtext, true))
- return check[i].ccname;
- }
-
- /* NULL result means no error */
- return (char *) NULL;
-}
-
-void
-ExecConstraints(char *caller, ResultRelInfo *resultRelInfo,
- TupleTableSlot *slot, EState *estate)
-{
- Relation rel = resultRelInfo->ri_RelationDesc;
- HeapTuple tuple = slot->val;
- TupleConstr *constr = rel->rd_att->constr;
-
- Assert(constr);
-
- if (constr->has_not_null)
- {
- int natts = rel->rd_att->natts;
- int attrChk;
-
- for (attrChk = 1; attrChk <= natts; attrChk++)
- {
- if (rel->rd_att->attrs[attrChk - 1]->attnotnull &&
- heap_attisnull(tuple, attrChk))
- elog(ERROR, "%s: Fail to add null value in not null attribute %s",
- caller, NameStr(rel->rd_att->attrs[attrChk - 1]->attname));
- }
- }
-
- if (constr->num_check > 0)
- {
- char *failed;
-
- if ((failed = ExecRelCheck(resultRelInfo, slot, estate)) != NULL)
- elog(ERROR, "%s: rejected due to CHECK constraint %s",
- caller, failed);
- }
-}
-
-/*
- * Check a modified tuple to see if we want to process its updated version
- * under READ COMMITTED rules.
- *
- * See backend/executor/README for some info about how this works.
- */
-TupleTableSlot *
-EvalPlanQual(EState *estate, Index rti, ItemPointer tid)
-{
- evalPlanQual *epq;
- EState *epqstate;
- Relation relation;
- HeapTupleData tuple;
- HeapTuple copyTuple = NULL;
- int rtsize;
- bool endNode;
-
- Assert(rti != 0);
-
- /*
- * find relation containing target tuple
- */
- if (estate->es_result_relation_info != NULL &&
- estate->es_result_relation_info->ri_RangeTableIndex == rti)
- relation = estate->es_result_relation_info->ri_RelationDesc;
- else
- {
- List *l;
-
- relation = NULL;
- foreach(l, estate->es_rowMark)
- {
- if (((execRowMark *) lfirst(l))->rti == rti)
- {
- relation = ((execRowMark *) lfirst(l))->relation;
- break;
- }
- }
- if (relation == NULL)
- elog(ERROR, "EvalPlanQual: can't find RTE %d", (int) rti);
- }
-
- /*
- * fetch tid tuple
- *
- * Loop here to deal with updated or busy tuples
- */
- tuple.t_self = *tid;
- for (;;)
- {
- Buffer buffer;
-
- if (heap_fetch(relation, SnapshotDirty, &tuple, &buffer, false, NULL))
- {
- TransactionId xwait = SnapshotDirty->xmax;
-
- if (TransactionIdIsValid(SnapshotDirty->xmin))
- elog(ERROR, "EvalPlanQual: t_xmin is uncommitted ?!");
-
- /*
- * If tuple is being updated by other transaction then we have
- * to wait for its commit/abort.
- */
- if (TransactionIdIsValid(xwait))
- {
- ReleaseBuffer(buffer);
- XactLockTableWait(xwait);
- continue;
- }
-
- /*
- * We got tuple - now copy it for use by recheck query.
- */
- copyTuple = heap_copytuple(&tuple);
- ReleaseBuffer(buffer);
- break;
- }
-
- /*
- * Oops! Invalid tuple. Have to check is it updated or deleted.
- * Note that it's possible to get invalid SnapshotDirty->tid if
- * tuple updated by this transaction. Have we to check this ?
- */
- if (ItemPointerIsValid(&(SnapshotDirty->tid)) &&
- !(ItemPointerEquals(&(tuple.t_self), &(SnapshotDirty->tid))))
- {
- /* updated, so look at the updated copy */
- tuple.t_self = SnapshotDirty->tid;
- continue;
- }
-
- /*
- * Deleted or updated by this transaction; forget it.
- */
- return NULL;
- }
-
- /*
- * For UPDATE/DELETE we have to return tid of actual row we're
- * executing PQ for.
- */
- *tid = tuple.t_self;
-
- /*
- * Need to run a recheck subquery. Find or create a PQ stack entry.
- */
- epq = (evalPlanQual *) estate->es_evalPlanQual;
- rtsize = length(estate->es_range_table);
- endNode = true;
-
- if (epq != NULL && epq->rti == 0)
- {
- /* Top PQ stack entry is idle, so re-use it */
- Assert(!(estate->es_useEvalPlan) &&
- epq->estate.es_evalPlanQual == NULL);
- epq->rti = rti;
- endNode = false;
- }
-
- /*
- * If this is request for another RTE - Ra, - then we have to check
- * wasn't PlanQual requested for Ra already and if so then Ra' row was
- * updated again and we have to re-start old execution for Ra and
- * forget all what we done after Ra was suspended. Cool? -:))
- */
- if (epq != NULL && epq->rti != rti &&
- epq->estate.es_evTuple[rti - 1] != NULL)
- {
- do
- {
- evalPlanQual *oldepq;
-
- /* pop previous PlanQual from the stack */
- epqstate = &(epq->estate);
- oldepq = (evalPlanQual *) epqstate->es_evalPlanQual;
- Assert(oldepq->rti != 0);
- /* stop execution */
- ExecEndNode(epq->plan, NULL);
- ExecDropTupleTable(epqstate->es_tupleTable, true);
- epqstate->es_tupleTable = NULL;
- heap_freetuple(epqstate->es_evTuple[epq->rti - 1]);
- epqstate->es_evTuple[epq->rti - 1] = NULL;
- /* push current PQ to freePQ stack */
- oldepq->free = epq;
- epq = oldepq;
- estate->es_evalPlanQual = (Pointer) epq;
- } while (epq->rti != rti);
- }
-
- /*
- * If we are requested for another RTE then we have to suspend
- * execution of current PlanQual and start execution for new one.
- */
- if (epq == NULL || epq->rti != rti)
- {
- /* try to reuse plan used previously */
- evalPlanQual *newepq = (epq != NULL) ? epq->free : NULL;
-
- if (newepq == NULL) /* first call or freePQ stack is empty */
- {
- newepq = (evalPlanQual *) palloc(sizeof(evalPlanQual));
- newepq->free = NULL;
-
- /*
- * Each stack level has its own copy of the plan tree. This
- * is wasteful, but necessary as long as plan nodes point to
- * exec state nodes rather than vice versa. Note that
- * copyfuncs.c doesn't attempt to copy the exec state nodes,
- * which is a good thing in this situation.
- */
- newepq->plan = copyObject(estate->es_origPlan);
-
- /*
- * Init stack level's EState. We share top level's copy of
- * es_result_relations array and other non-changing status. We
- * need our own tupletable, es_param_exec_vals, and other
- * changeable state.
- */
- epqstate = &(newepq->estate);
- memcpy(epqstate, estate, sizeof(EState));
- epqstate->es_direction = ForwardScanDirection;
- if (estate->es_origPlan->nParamExec > 0)
- epqstate->es_param_exec_vals = (ParamExecData *)
- palloc(estate->es_origPlan->nParamExec *
- sizeof(ParamExecData));
- epqstate->es_tupleTable = NULL;
- epqstate->es_per_tuple_exprcontext = NULL;
-
- /*
- * Each epqstate must have its own es_evTupleNull state, but
- * all the stack entries share es_evTuple state. This allows
- * sub-rechecks to inherit the value being examined by an
- * outer recheck.
- */
- epqstate->es_evTupleNull = (bool *) palloc(rtsize * sizeof(bool));
- if (epq == NULL)
- {
- /* first PQ stack entry */
- epqstate->es_evTuple = (HeapTuple *)
- palloc(rtsize * sizeof(HeapTuple));
- memset(epqstate->es_evTuple, 0, rtsize * sizeof(HeapTuple));
- }
- else
- {
- /* later stack entries share the same storage */
- epqstate->es_evTuple = epq->estate.es_evTuple;
- }
- }
- else
- {
- /* recycle previously used EState */
- epqstate = &(newepq->estate);
- }
- /* push current PQ to the stack */
- epqstate->es_evalPlanQual = (Pointer) epq;
- epq = newepq;
- estate->es_evalPlanQual = (Pointer) epq;
- epq->rti = rti;
- endNode = false;
- }
-
- Assert(epq->rti == rti);
- epqstate = &(epq->estate);
-
- /*
- * Ok - we're requested for the same RTE. Unfortunately we still have
- * to end and restart execution of the plan, because ExecReScan
- * wouldn't ensure that upper plan nodes would reset themselves. We
- * could make that work if insertion of the target tuple were
- * integrated with the Param mechanism somehow, so that the upper plan
- * nodes know that their children's outputs have changed.
- */
- if (endNode)
- {
- /* stop execution */
- ExecEndNode(epq->plan, NULL);
- ExecDropTupleTable(epqstate->es_tupleTable, true);
- epqstate->es_tupleTable = NULL;
- }
-
- /*
- * free old RTE' tuple, if any, and store target tuple where
- * relation's scan node will see it
- */
- if (epqstate->es_evTuple[rti - 1] != NULL)
- heap_freetuple(epqstate->es_evTuple[rti - 1]);
- epqstate->es_evTuple[rti - 1] = copyTuple;
-
- /*
- * Initialize for new recheck query; be careful to copy down state
- * that might have changed in top EState.
- */
- epqstate->es_result_relation_info = estate->es_result_relation_info;
- epqstate->es_junkFilter = estate->es_junkFilter;
- if (estate->es_origPlan->nParamExec > 0)
- memset(epqstate->es_param_exec_vals, 0,
- estate->es_origPlan->nParamExec * sizeof(ParamExecData));
- memset(epqstate->es_evTupleNull, false, rtsize * sizeof(bool));
- epqstate->es_useEvalPlan = false;
- Assert(epqstate->es_tupleTable == NULL);
- epqstate->es_tupleTable =
- ExecCreateTupleTable(estate->es_tupleTable->size);
-
- ExecInitNode(epq->plan, epqstate, NULL);
-
- return EvalPlanQualNext(estate);
-}
-
-static TupleTableSlot *
-EvalPlanQualNext(EState *estate)
-{
- evalPlanQual *epq = (evalPlanQual *) estate->es_evalPlanQual;
- EState *epqstate = &(epq->estate);
- evalPlanQual *oldepq;
- TupleTableSlot *slot;
-
- Assert(epq->rti != 0);
-
-lpqnext:;
- slot = ExecProcNode(epq->plan, NULL);
-
- /*
- * No more tuples for this PQ. Continue previous one.
- */
- if (TupIsNull(slot))
- {
- /* stop execution */
- ExecEndNode(epq->plan, NULL);
- ExecDropTupleTable(epqstate->es_tupleTable, true);
- epqstate->es_tupleTable = NULL;
- heap_freetuple(epqstate->es_evTuple[epq->rti - 1]);
- epqstate->es_evTuple[epq->rti - 1] = NULL;
- /* pop old PQ from the stack */
- oldepq = (evalPlanQual *) epqstate->es_evalPlanQual;
- if (oldepq == (evalPlanQual *) NULL)
- {
- epq->rti = 0; /* this is the first (oldest) */
- estate->es_useEvalPlan = false; /* PQ - mark as free and */
- return (NULL); /* continue Query execution */
- }
- Assert(oldepq->rti != 0);
- /* push current PQ to freePQ stack */
- oldepq->free = epq;
- epq = oldepq;
- epqstate = &(epq->estate);
- estate->es_evalPlanQual = (Pointer) epq;
- goto lpqnext;
- }
-
- return (slot);
-}
-
-static void
-EndEvalPlanQual(EState *estate)
-{
- evalPlanQual *epq = (evalPlanQual *) estate->es_evalPlanQual;
- EState *epqstate = &(epq->estate);
- evalPlanQual *oldepq;
-
- if (epq->rti == 0) /* plans already shutdowned */
- {
- Assert(epq->estate.es_evalPlanQual == NULL);
- return;
- }
-
- for (;;)
- {
- /* stop execution */
- ExecEndNode(epq->plan, NULL);
- ExecDropTupleTable(epqstate->es_tupleTable, true);
- epqstate->es_tupleTable = NULL;
- if (epqstate->es_evTuple[epq->rti - 1] != NULL)
- {
- heap_freetuple(epqstate->es_evTuple[epq->rti - 1]);
- epqstate->es_evTuple[epq->rti - 1] = NULL;
- }
- /* pop old PQ from the stack */
- oldepq = (evalPlanQual *) epqstate->es_evalPlanQual;
- if (oldepq == (evalPlanQual *) NULL)
- {
- epq->rti = 0; /* this is the first (oldest) */
- estate->es_useEvalPlan = false; /* PQ - mark as free */
- break;
- }
- Assert(oldepq->rti != 0);
- /* push current PQ to freePQ stack */
- oldepq->free = epq;
- epq = oldepq;
- epqstate = &(epq->estate);
- estate->es_evalPlanQual = (Pointer) epq;
- }
-}