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author | CVS to git conversion script <webmaster@postgresql.org> | 2002-06-20 20:29:55 +0000 |
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committer | CVS to git conversion script <webmaster@postgresql.org> | 2002-06-20 20:29:55 +0000 |
commit | 05dedace84ef8c93fea5309c3ac55f889011429b (patch) | |
tree | 4c7f513afbbc03060039a165d1770e11be711773 /src/backend/parser/analyze.c | |
parent | d84fe82230c593f3dc5d7f427849b99d1efa8a0a (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.'
Delete:
COPYRIGHT
GNUmakefile.in
HISTORY
INSTALL
Makefile
README
aclocal.m4
config/ac_func_accept_argtypes.m4
config/c-compiler.m4
config/c-library.m4
config/config.guess
config/config.sub
config/cxx.m4
config/docbook.m4
config/general.m4
config/install-sh
config/java.m4
config/libtool.m4
config/missing
config/mkinstalldirs
config/perl.m4
config/prep_buildtree
config/programs.m4
config/python.m4
config/tcl.m4
configure
configure.in
contrib/Makefile
contrib/README
contrib/array/Makefile
contrib/array/README.array_iterator
contrib/array/array_iterator.c
contrib/array/array_iterator.h
contrib/array/array_iterator.sql.in
contrib/btree_gist/Makefile
contrib/btree_gist/README.btree_gist
contrib/btree_gist/btree_gist.c
contrib/btree_gist/btree_gist.sql.in
contrib/btree_gist/data/test_btree.data
contrib/btree_gist/data/test_btree_ts.data
contrib/btree_gist/expected/btree_gist.out
contrib/btree_gist/sql/btree_gist.sql
contrib/chkpass/Makefile
contrib/chkpass/README.chkpass
contrib/chkpass/chkpass.c
contrib/chkpass/chkpass.sql.in
contrib/contrib-global.mk
contrib/cube/Makefile
contrib/cube/README.cube
contrib/cube/buffer.c
contrib/cube/buffer.h
contrib/cube/cube.c
contrib/cube/cube.sql.in
contrib/cube/cubedata.h
contrib/cube/cubeparse.y
contrib/cube/cubescan.l
contrib/cube/data/test_cube.data
contrib/cube/expected/cube.out
contrib/cube/sql/cube.sql
contrib/dbase/Makefile
contrib/dbase/README.dbf2pg
contrib/dbase/dbf.c
contrib/dbase/dbf.h
contrib/dbase/dbf2pg.1
contrib/dbase/dbf2pg.c
contrib/dbase/endian.c
contrib/dblink/Makefile
contrib/dblink/README.dblink
contrib/dblink/dblink.c
contrib/dblink/dblink.h
contrib/dblink/dblink.sql.in
contrib/dbsize/Makefile
contrib/dbsize/README.dbsize
contrib/dbsize/dbsize.c
contrib/dbsize/dbsize.sql.in
contrib/earthdistance/Makefile
contrib/earthdistance/README.earthdistance
contrib/earthdistance/earthdistance.c
contrib/earthdistance/earthdistance.sql.in
contrib/findoidjoins/Makefile
contrib/findoidjoins/README.findoidjoins
contrib/findoidjoins/findoidjoins.c
contrib/findoidjoins/make_oidjoins_check
contrib/fulltextindex/Makefile
contrib/fulltextindex/README.fti
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contrib/fulltextindex/timings.sh
contrib/fuzzystrmatch/Makefile
contrib/fuzzystrmatch/README.fuzzystrmatch
contrib/fuzzystrmatch/README.soundex
contrib/fuzzystrmatch/fuzzystrmatch.c
contrib/fuzzystrmatch/fuzzystrmatch.h
contrib/fuzzystrmatch/fuzzystrmatch.sql.in
contrib/intagg/Makefile
contrib/intagg/README.int_aggregate
contrib/intagg/int_aggregate.c
contrib/intagg/int_aggregate.sql.in
contrib/intarray/Makefile
contrib/intarray/README.intarray
contrib/intarray/_int.c
contrib/intarray/_int.sql.in
contrib/intarray/bench/bench.pl
contrib/intarray/bench/create_test.pl
contrib/intarray/data/test__int.data
contrib/intarray/expected/_int.out
contrib/intarray/sql/_int.sql
contrib/ipc_check/README
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contrib/isbn_issn/Makefile
contrib/isbn_issn/README.isbn_issn
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contrib/isbn_issn/isbn_issn.sql.in
contrib/lo/Makefile
contrib/lo/README.lo
contrib/lo/lo.c
contrib/lo/lo.sql.in
contrib/lo/lo_drop.sql
contrib/lo/lo_test.sql
contrib/mSQL-interface/Makefile
contrib/mSQL-interface/README.mpgsql
contrib/mSQL-interface/mpgsql.c
contrib/mac/README.mac
contrib/mac/createoui
contrib/mac/dropoui
contrib/mac/ouiparse.awk
contrib/mac/updateoui
contrib/miscutil/Makefile
contrib/miscutil/README.misc_utils
contrib/miscutil/misc_utils.c
contrib/miscutil/misc_utils.h
contrib/miscutil/misc_utils.sql.in
contrib/mysql/README
contrib/mysql/my2pg.pl
contrib/mysql/mysql2pgsql
contrib/noupdate/Makefile
contrib/noupdate/README.noup
contrib/noupdate/noup.c
contrib/noupdate/noup.sql.in
contrib/oid2name/Makefile
contrib/oid2name/README.oid2name
contrib/oid2name/oid2name.c
contrib/oracle/CHANGES
contrib/oracle/Ora2Pg.pm
contrib/oracle/README.ora2pg
contrib/oracle/TODO
contrib/oracle/ora2pg.html
contrib/oracle/ora2pg.pl
contrib/pg_controldata/Makefile
contrib/pg_controldata/README.pg_controldata
contrib/pg_controldata/pg_controldata.c
contrib/pg_dumplo/Makefile
contrib/pg_dumplo/README.pg_dumplo
contrib/pg_dumplo/lo_export.c
contrib/pg_dumplo/lo_import.c
contrib/pg_dumplo/main.c
contrib/pg_dumplo/pg_dumplo.h
contrib/pg_dumplo/utils.c
contrib/pg_logger/Makefile
contrib/pg_logger/README.pg_logger
contrib/pg_logger/pg_logger.c
contrib/pg_resetxlog/Makefile
contrib/pg_resetxlog/README.pg_resetxlog
contrib/pg_resetxlog/pg_resetxlog.c
contrib/pg_upgrade/README
contrib/pg_upgrade/pg_upgrade
contrib/pg_upgrade/pg_upgrade.1
contrib/pgbench/Makefile
contrib/pgbench/README.pgbench
contrib/pgbench/README.pgbench_jis
contrib/pgbench/pgbench.c
contrib/pgcrypto/API
contrib/pgcrypto/Makefile
contrib/pgcrypto/README.pgcrypto
contrib/pgcrypto/blf.c
contrib/pgcrypto/blf.h
contrib/pgcrypto/crypt-blowfish.c
contrib/pgcrypto/crypt-des.c
contrib/pgcrypto/crypt-gensalt.c
contrib/pgcrypto/crypt-md5.c
contrib/pgcrypto/expected/blowfish.out
contrib/pgcrypto/expected/crypt-blowfish.out
contrib/pgcrypto/expected/crypt-des.out
contrib/pgcrypto/expected/crypt-md5.out
contrib/pgcrypto/expected/crypt-xdes.out
contrib/pgcrypto/expected/hmac-md5.out
contrib/pgcrypto/expected/hmac-sha1.out
contrib/pgcrypto/expected/init.out
contrib/pgcrypto/expected/md5.out
contrib/pgcrypto/expected/rijndael.out
contrib/pgcrypto/expected/sha1.out
contrib/pgcrypto/internal.c
contrib/pgcrypto/md5.c
contrib/pgcrypto/md5.h
contrib/pgcrypto/mhash.c
contrib/pgcrypto/misc.c
contrib/pgcrypto/openssl.c
contrib/pgcrypto/pgcrypto.c
contrib/pgcrypto/pgcrypto.h
contrib/pgcrypto/pgcrypto.sql.in
contrib/pgcrypto/px-crypt.c
contrib/pgcrypto/px-crypt.h
contrib/pgcrypto/px-hmac.c
contrib/pgcrypto/px.c
contrib/pgcrypto/px.h
contrib/pgcrypto/random.c
contrib/pgcrypto/rijndael.c
contrib/pgcrypto/rijndael.h
contrib/pgcrypto/rijndael.tbl
contrib/pgcrypto/sha1.c
contrib/pgcrypto/sha1.h
contrib/pgcrypto/sql/blowfish.sql
contrib/pgcrypto/sql/crypt-blowfish.sql
contrib/pgcrypto/sql/crypt-des.sql
contrib/pgcrypto/sql/crypt-md5.sql
contrib/pgcrypto/sql/crypt-xdes.sql
contrib/pgcrypto/sql/hmac-md5.sql
contrib/pgcrypto/sql/hmac-sha1.sql
contrib/pgcrypto/sql/init.sql
contrib/pgcrypto/sql/md5.sql
contrib/pgcrypto/sql/rijndael.sql
contrib/pgcrypto/sql/sha1.sql
contrib/pgstattuple/Makefile
contrib/pgstattuple/README.pgstattuple
contrib/pgstattuple/README.pgstattuple.euc_jp
contrib/pgstattuple/pgstattuple.c
contrib/pgstattuple/pgstattuple.sql.in
contrib/retep/CHANGELOG
contrib/retep/Implementation
contrib/retep/Makefile
contrib/retep/README
contrib/retep/build.xml
contrib/retep/data/cds.dtd
contrib/retep/data/cds.xml
contrib/retep/retep.jpx
contrib/retep/uk/org/retep/dtu/DCollection.java
contrib/retep/uk/org/retep/dtu/DConstants.java
contrib/retep/uk/org/retep/dtu/DElement.java
contrib/retep/uk/org/retep/dtu/DEnvironment.java
contrib/retep/uk/org/retep/dtu/DModule.java
contrib/retep/uk/org/retep/dtu/DModuleXML.java
contrib/retep/uk/org/retep/dtu/DNode.java
contrib/retep/uk/org/retep/dtu/DProcessor.java
contrib/retep/uk/org/retep/dtu/DTransform.java
contrib/retep/uk/org/retep/tools/Tool.java
contrib/retep/uk/org/retep/tools.properties
contrib/retep/uk/org/retep/util/ExceptionDialog.java
contrib/retep/uk/org/retep/util/Globals.java
contrib/retep/uk/org/retep/util/Logger.java
contrib/retep/uk/org/retep/util/Main.java
contrib/retep/uk/org/retep/util/StandaloneApp.java
contrib/retep/uk/org/retep/util/hba/Editor.java
contrib/retep/uk/org/retep/util/hba/Main.java
contrib/retep/uk/org/retep/util/hba/Record.java
contrib/retep/uk/org/retep/util/misc/IPAddress.java
contrib/retep/uk/org/retep/util/misc/PropertiesIO.java
contrib/retep/uk/org/retep/util/misc/WStringTokenizer.java
contrib/retep/uk/org/retep/util/models/HBATableModel.java
contrib/retep/uk/org/retep/util/models/PropertiesTableModel.java
contrib/retep/uk/org/retep/util/proped/Main.java
contrib/retep/uk/org/retep/util/proped/PropertyEditor.java
contrib/retep/uk/org/retep/xml/core/XMLFactory.java
contrib/retep/uk/org/retep/xml/core/XMLFactoryException.java
contrib/retep/uk/org/retep/xml/jdbc/XMLDatabase.java
contrib/retep/uk/org/retep/xml/jdbc/XMLResultSet.java
contrib/retep/uk/org/retep/xml/parser/TagHandler.java
contrib/retep/uk/org/retep/xml/parser/TagListener.java
contrib/retep/uk/org/retep/xml/test/XMLExport.java
contrib/rserv/ApplySnapshot.in
contrib/rserv/CleanLog.in
contrib/rserv/GetSyncID.in
contrib/rserv/InitRservTest.in
contrib/rserv/Makefile
contrib/rserv/MasterAddTable.in
contrib/rserv/MasterInit.in
contrib/rserv/MasterSync.in
contrib/rserv/PrepareSnapshot.in
contrib/rserv/README.rserv
contrib/rserv/RServ.pm
contrib/rserv/Replicate.in
contrib/rserv/RservTest.in
contrib/rserv/SlaveAddTable.in
contrib/rserv/SlaveInit.in
contrib/rserv/master.sql.in
contrib/rserv/regress.sh
contrib/rserv/rserv.c
contrib/rserv/slave.sql.in
contrib/rtree_gist/Makefile
contrib/rtree_gist/README.rtree_gist
contrib/rtree_gist/bench/bench.pl
contrib/rtree_gist/bench/create_test.pl
contrib/rtree_gist/data/test_box.data
contrib/rtree_gist/expected/rtree_gist.out
contrib/rtree_gist/rtree_gist.c
contrib/rtree_gist/rtree_gist.sql.in
contrib/rtree_gist/sql/rtree_gist.sql
contrib/seg/Makefile
contrib/seg/README.seg
contrib/seg/buffer.c
contrib/seg/buffer.h
contrib/seg/data/test_seg.data
contrib/seg/expected/seg.out
contrib/seg/seg-validate.pl
contrib/seg/seg.c
contrib/seg/seg.sql.in
contrib/seg/segdata.h
contrib/seg/segparse.y
contrib/seg/segscan.l
contrib/seg/sort-segments.pl
contrib/seg/sql/seg.sql
contrib/spi/Makefile
contrib/spi/README.spi
contrib/spi/autoinc.c
contrib/spi/autoinc.example
contrib/spi/autoinc.sql.in
contrib/spi/insert_username.c
contrib/spi/insert_username.example
contrib/spi/insert_username.sql.in
contrib/spi/moddatetime.c
contrib/spi/moddatetime.example
contrib/spi/moddatetime.sql.in
contrib/spi/preprocessor/README.MAX
contrib/spi/preprocessor/example.sql
contrib/spi/preprocessor/step1.c
contrib/spi/preprocessor/step1.e
contrib/spi/preprocessor/step2.pl
contrib/spi/refint.c
contrib/spi/refint.example
contrib/spi/refint.sql.in
contrib/spi/timetravel.c
contrib/spi/timetravel.example
contrib/spi/timetravel.sql.in
contrib/start-scripts/freebsd
contrib/start-scripts/linux
contrib/string/Makefile
contrib/string/README.string_io
contrib/string/string_io.c
contrib/string/string_io.h
contrib/string/string_io.sql.in
contrib/tips/Makefile
contrib/tips/README.apachelog
contrib/tools/add-emacs-variables
contrib/tools/find-sources
contrib/tools/make-tags
contrib/tsearch/Makefile
contrib/tsearch/README.tsearch
contrib/tsearch/crc32.c
contrib/tsearch/crc32.h
contrib/tsearch/data/test_tsearch.data
contrib/tsearch/deflex.h
contrib/tsearch/dict/porter_english.dct
contrib/tsearch/dict/russian_stemming.dct
contrib/tsearch/dict.h
contrib/tsearch/expected/tsearch.out
contrib/tsearch/gistidx.c
contrib/tsearch/gistidx.h
contrib/tsearch/makedict/makedict.pl
contrib/tsearch/morph.c
contrib/tsearch/morph.h
contrib/tsearch/parser.h
contrib/tsearch/parser.l
contrib/tsearch/query.c
contrib/tsearch/query.h
contrib/tsearch/rewrite.c
contrib/tsearch/rewrite.h
contrib/tsearch/sql/tsearch.sql
contrib/tsearch/tsearch.sql.in
contrib/tsearch/txtidx.c
contrib/tsearch/txtidx.h
contrib/userlock/Makefile
contrib/userlock/README.user_locks
contrib/userlock/user_locks.c
contrib/userlock/user_locks.h
contrib/userlock/user_locks.sql.in
contrib/vacuumlo/Makefile
contrib/vacuumlo/README.vacuumlo
contrib/vacuumlo/vacuumlo.c
contrib/xml/Makefile
contrib/xml/README
contrib/xml/TODO
contrib/xml/pgxml.c
contrib/xml/pgxml.h
contrib/xml/pgxml.source
contrib/xml/pgxml_dom.c
contrib/xml/pgxml_dom.source
doc/FAQ
doc/FAQ_AIX
doc/FAQ_DEV
doc/FAQ_HPUX
doc/FAQ_IRIX
doc/FAQ_MSWIN
doc/FAQ_QNX4
doc/FAQ_SCO
doc/FAQ_Solaris
doc/FAQ_german
doc/FAQ_japanese
doc/FAQ_polish
doc/FAQ_russian
doc/KNOWN_BUGS
doc/MISSING_FEATURES
doc/Makefile
doc/README.mb.big5
doc/README.mb.jp
doc/TODO
doc/TODO.detail/README
doc/TODO.detail/atttypmod
doc/TODO.detail/crossdb
doc/TODO.detail/cursor
doc/TODO.detail/drop
doc/TODO.detail/exists
doc/TODO.detail/foreign
doc/TODO.detail/fsync
doc/TODO.detail/inheritance
doc/TODO.detail/java
doc/TODO.detail/mmap
doc/TODO.detail/namedatalen
doc/TODO.detail/optimizer
doc/TODO.detail/performance
doc/TODO.detail/persistent
doc/TODO.detail/pool
doc/TODO.detail/prepare
doc/TODO.detail/privileges
doc/TODO.detail/replication
doc/TODO.detail/schema
doc/TODO.detail/tablespaces
doc/TODO.detail/thread
doc/TODO.detail/transactions
doc/TODO.detail/typeconv
doc/TODO.detail/update
doc/TODO.detail/vacuum
doc/TODO.detail/view
doc/TODO.detail/win32
doc/TODO.detail/yacc
doc/bug.template
doc/src/FAQ/FAQ.html
doc/src/FAQ/FAQ_DEV.html
doc/src/FAQ/FAQ_german.html
doc/src/FAQ/FAQ_japanese.html
doc/src/FAQ/FAQ_polish.html
doc/src/FAQ/FAQ_russian.html
doc/src/Makefile
doc/src/graphics/catalogs.ag
doc/src/graphics/catalogs.cgm
doc/src/graphics/catalogs.gif
doc/src/graphics/catalogs.ps
doc/src/graphics/clientserver.ag
doc/src/graphics/clientserver.gif
doc/src/graphics/connections.ag
doc/src/graphics/connections.gif
doc/src/sgml/Makefile
doc/src/sgml/admin.sgml
doc/src/sgml/advanced.sgml
doc/src/sgml/arch-dev.sgml
doc/src/sgml/arch-pg.sgml
doc/src/sgml/array.sgml
doc/src/sgml/backup.sgml
doc/src/sgml/biblio.sgml
doc/src/sgml/bki.sgml
doc/src/sgml/book-decl.sgml
doc/src/sgml/catalogs.sgml
doc/src/sgml/charset.sgml
doc/src/sgml/client-auth.sgml
doc/src/sgml/compiler.sgml
doc/src/sgml/contacts.sgml
doc/src/sgml/cvs.sgml
doc/src/sgml/datatype.sgml
doc/src/sgml/datetime.sgml
doc/src/sgml/developer.sgml
doc/src/sgml/dfunc.sgml
doc/src/sgml/diskusage.sgml
doc/src/sgml/docguide.sgml
doc/src/sgml/ecpg.sgml
doc/src/sgml/extend.sgml
doc/src/sgml/features.sgml
doc/src/sgml/filelist.sgml
doc/src/sgml/fixrtf
doc/src/sgml/func-ref.sgml
doc/src/sgml/func.sgml
doc/src/sgml/geqo.sgml
doc/src/sgml/gist.sgml
doc/src/sgml/history.sgml
doc/src/sgml/indexcost.sgml
doc/src/sgml/indices.sgml
doc/src/sgml/info.sgml
doc/src/sgml/inherit.sgml
doc/src/sgml/install-win32.sgml
doc/src/sgml/installation.sgml
doc/src/sgml/intro.sgml
doc/src/sgml/jdbc.sgml
doc/src/sgml/keywords.sgml
doc/src/sgml/legal.sgml
doc/src/sgml/libpgeasy.sgml
doc/src/sgml/libpgtcl.sgml
doc/src/sgml/libpq++.sgml
doc/src/sgml/libpq.sgml
doc/src/sgml/lobj.sgml
doc/src/sgml/maintenance.sgml
doc/src/sgml/manage-ag.sgml
doc/src/sgml/manage.sgml
doc/src/sgml/monitoring.sgml
doc/src/sgml/mvcc.sgml
doc/src/sgml/nls.sgml
doc/src/sgml/notation.sgml
doc/src/sgml/odbc.sgml
doc/src/sgml/page.sgml
doc/src/sgml/perform.sgml
doc/src/sgml/plperl.sgml
doc/src/sgml/plpython.sgml
doc/src/sgml/plsql.sgml
doc/src/sgml/pltcl.sgml
doc/src/sgml/postgres.sgml
doc/src/sgml/problems.sgml
doc/src/sgml/programmer.sgml
doc/src/sgml/protocol.sgml
doc/src/sgml/pygresql.sgml
doc/src/sgml/queries.sgml
doc/src/sgml/query.sgml
doc/src/sgml/recovery.sgml
doc/src/sgml/ref/abort.sgml
doc/src/sgml/ref/allfiles.sgml
doc/src/sgml/ref/alter_database.sgml
doc/src/sgml/ref/alter_group.sgml
doc/src/sgml/ref/alter_table.sgml
doc/src/sgml/ref/alter_trigger.sgml
doc/src/sgml/ref/alter_user.sgml
doc/src/sgml/ref/analyze.sgml
doc/src/sgml/ref/begin.sgml
doc/src/sgml/ref/checkpoint.sgml
doc/src/sgml/ref/close.sgml
doc/src/sgml/ref/cluster.sgml
doc/src/sgml/ref/comment.sgml
doc/src/sgml/ref/commit.sgml
doc/src/sgml/ref/copy.sgml
doc/src/sgml/ref/create_aggregate.sgml
doc/src/sgml/ref/create_constraint.sgml
doc/src/sgml/ref/create_database.sgml
doc/src/sgml/ref/create_domain.sgml
doc/src/sgml/ref/create_function.sgml
doc/src/sgml/ref/create_group.sgml
doc/src/sgml/ref/create_index.sgml
doc/src/sgml/ref/create_language.sgml
doc/src/sgml/ref/create_operator.sgml
doc/src/sgml/ref/create_rule.sgml
doc/src/sgml/ref/create_schema.sgml
doc/src/sgml/ref/create_sequence.sgml
doc/src/sgml/ref/create_table.sgml
doc/src/sgml/ref/create_table_as.sgml
doc/src/sgml/ref/create_trigger.sgml
doc/src/sgml/ref/create_type.sgml
doc/src/sgml/ref/create_user.sgml
doc/src/sgml/ref/create_view.sgml
doc/src/sgml/ref/createdb.sgml
doc/src/sgml/ref/createlang.sgml
doc/src/sgml/ref/createuser.sgml
doc/src/sgml/ref/current_date.sgml
doc/src/sgml/ref/current_time.sgml
doc/src/sgml/ref/current_timestamp.sgml
doc/src/sgml/ref/current_user.sgml
doc/src/sgml/ref/declare.sgml
doc/src/sgml/ref/delete.sgml
doc/src/sgml/ref/drop_aggregate.sgml
doc/src/sgml/ref/drop_database.sgml
doc/src/sgml/ref/drop_domain.sgml
doc/src/sgml/ref/drop_function.sgml
doc/src/sgml/ref/drop_group.sgml
doc/src/sgml/ref/drop_index.sgml
doc/src/sgml/ref/drop_language.sgml
doc/src/sgml/ref/drop_operator.sgml
doc/src/sgml/ref/drop_rule.sgml
doc/src/sgml/ref/drop_sequence.sgml
doc/src/sgml/ref/drop_table.sgml
doc/src/sgml/ref/drop_trigger.sgml
doc/src/sgml/ref/drop_type.sgml
doc/src/sgml/ref/drop_user.sgml
doc/src/sgml/ref/drop_view.sgml
doc/src/sgml/ref/dropdb.sgml
doc/src/sgml/ref/droplang.sgml
doc/src/sgml/ref/dropuser.sgml
doc/src/sgml/ref/ecpg-ref.sgml
doc/src/sgml/ref/end.sgml
doc/src/sgml/ref/explain.sgml
doc/src/sgml/ref/fetch.sgml
doc/src/sgml/ref/grant.sgml
doc/src/sgml/ref/initdb.sgml
doc/src/sgml/ref/initlocation.sgml
doc/src/sgml/ref/insert.sgml
doc/src/sgml/ref/ipcclean.sgml
doc/src/sgml/ref/listen.sgml
doc/src/sgml/ref/load.sgml
doc/src/sgml/ref/lock.sgml
doc/src/sgml/ref/move.sgml
doc/src/sgml/ref/notify.sgml
doc/src/sgml/ref/pg_config-ref.sgml
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src/test/regress/sql/portals.sql
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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
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Diffstat (limited to 'src/backend/parser/analyze.c')
-rw-r--r-- | src/backend/parser/analyze.c | 3260 |
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; -} |