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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/optimizer/path/_deadcode/xfunc.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/fti.pl
contrib/fulltextindex/fti.sql.in
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
contrib/ipc_check/ipc_check.pl
contrib/isbn_issn/Makefile
contrib/isbn_issn/README.isbn_issn
contrib/isbn_issn/isbn_issn.c
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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-rw-r--r-- | src/backend/optimizer/path/_deadcode/xfunc.c | 1479 |
1 files changed, 0 insertions, 1479 deletions
diff --git a/src/backend/optimizer/path/_deadcode/xfunc.c b/src/backend/optimizer/path/_deadcode/xfunc.c deleted file mode 100644 index 80087652c79..00000000000 --- a/src/backend/optimizer/path/_deadcode/xfunc.c +++ /dev/null @@ -1,1479 +0,0 @@ -/*------------------------------------------------------------------------- - * - * xfunc.c - * Utility routines to handle expensive function optimization. - * Includes xfunc_trypullup(), which attempts early pullup of predicates - * to allow for maximal pruning. - * - * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group - * Portions Copyright (c) 1994, Regents of the University of California - * - * - * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/path/_deadcode/Attic/xfunc.c,v 1.19 2002/06/20 20:29:30 momjian Exp $ - * - *------------------------------------------------------------------------- - */ -#include <math.h> - -#ifdef HAVE_VALUES_H -#include <values.h> -#endif - -#include "postgres.h" - -#include "access/heapam.h" -#include "access/htup.h" -#include "catalog/pg_language.h" -#include "catalog/pg_proc.h" -#include "catalog/pg_type.h" -#include "lib/lispsort.h" -#include "nodes/nodes.h" -#include "nodes/pg_list.h" -#include "nodes/primnodes.h" -#include "nodes/relation.h" -#include "optimizer/clauses.h" -#include "optimizer/cost.h" -#include "optimizer/internal.h" -#include "optimizer/keys.h" -#include "optimizer/pathnode.h" -#include "optimizer/tlist.h" -#include "storage/buf_internals.h" -#include "tcop/dest.h" -#include "utils/syscache.h" - -#define ever ; 1 ; - -/* local funcs */ -static int xfunc_card_unreferenced(Query *queryInfo, - Expr *clause, Relids referenced); - -*/ - -/* -** xfunc_trypullup -** Preliminary pullup of predicates, to allow for maximal pruning. -** Given a relation, check each of its paths and see if you can -** pullup clauses from its inner and outer. -*/ - -void -xfunc_trypullup(RelOptInfo rel) -{ - LispValue y; /* list ptr */ - RestrictInfo maxcinfo; /* The RestrictInfo to pull up, as - * calculated by xfunc_shouldpull() */ - JoinPath curpath; /* current path in list */ - int progress; /* has progress been made this time - * through? */ - int clausetype; - - do - { - progress = false; /* no progress yet in this iteration */ - foreach(y, get_pathlist(rel)) - { - curpath = (JoinPath) lfirst(y); - - /* - * * for each operand, attempt to pullup predicates until - * first * failure. - */ - for (ever) - { - /* No, the following should NOT be '==' !! */ - if (clausetype = xfunc_shouldpull((Path) get_innerjoinpath(curpath), - curpath, INNER, &maxcinfo)) - { - - xfunc_pullup((Path) get_innerjoinpath(curpath), - curpath, maxcinfo, INNER, clausetype); - progress = true; - } - else - break; - } - for (ever) - { - - /* No, the following should NOT be '==' !! */ - if (clausetype = xfunc_shouldpull((Path) get_outerjoinpath(curpath), - curpath, OUTER, &maxcinfo)) - { - - xfunc_pullup((Path) get_outerjoinpath(curpath), - curpath, maxcinfo, OUTER, clausetype); - progress = true; - } - else - break; - } - - /* - * * make sure the unpruneable flag bubbles up, i.e. * if - * anywhere below us in the path pruneable is false, * then - * pruneable should be false here - */ - if (get_pruneable(get_parent(curpath)) && - (!get_pruneable(get_parent - ((Path) get_innerjoinpath(curpath))) || - !get_pruneable(get_parent((Path) - get_outerjoinpath(curpath))))) - { - - set_pruneable(get_parent(curpath), false); - progress = true; - } - } - } while (progress); -} - -/* - ** xfunc_shouldpull - ** find clause with highest rank, and decide whether to pull it up - ** from child to parent. Currently we only pullup secondary join clauses - ** that are in the pathrestrictinfo. Secondary hash and sort clauses are - ** left where they are. - ** If we find an expensive function but decide *not* to pull it up, - ** we'd better set the unpruneable flag. -- JMH, 11/11/92 - ** - ** Returns: 0 if nothing left to pullup - ** XFUNC_LOCPRD if a local predicate is to be pulled up - ** XFUNC_JOINPRD if a secondary join predicate is to be pulled up - */ -int -xfunc_shouldpull(Query *queryInfo, - Path childpath, - JoinPath parentpath, - int whichchild, - RestrictInfo *maxcinfopt) /* Out: pointer to clause - * to pullup */ -{ - LispValue clauselist, - tmplist; /* lists of clauses */ - RestrictInfo maxcinfo; /* clause to pullup */ - LispValue primjoinclause /* primary join clause */ - = xfunc_primary_join(parentpath); - Cost tmprank, - maxrank = (-1 * MAXFLOAT); /* ranks of clauses */ - Cost joinselec = 0; /* selectivity of the join predicate */ - Cost joincost = 0; /* join cost + primjoinclause cost */ - int retval = XFUNC_LOCPRD; - - clauselist = get_loc_restrictinfo(childpath); - - if (clauselist != LispNil) - { - /* find local predicate with maximum rank */ - for (tmplist = clauselist, - maxcinfo = (RestrictInfo) lfirst(tmplist), - maxrank = xfunc_rank(get_clause(maxcinfo)); - tmplist != LispNil; - tmplist = lnext(tmplist)) - { - - if ((tmprank = xfunc_rank(get_clause((RestrictInfo) lfirst(tmplist)))) - > maxrank) - { - maxcinfo = (RestrictInfo) lfirst(tmplist); - maxrank = tmprank; - } - } - } - - /* - * * If child is a join path, and there are multiple join clauses, * - * see if any join clause has even higher rank than the highest * - * local predicate - */ - if (is_join(childpath) && xfunc_num_join_clauses((JoinPath) childpath) > 1) - for (tmplist = get_pathrestrictinfo((JoinPath) childpath); - tmplist != LispNil; - tmplist = lnext(tmplist)) - { - - if (tmplist != LispNil && - (tmprank = xfunc_rank(get_clause((RestrictInfo) lfirst(tmplist)))) - > maxrank) - { - maxcinfo = (RestrictInfo) lfirst(tmplist); - maxrank = tmprank; - retval = XFUNC_JOINPRD; - } - } - if (maxrank == (-1 * MAXFLOAT)) /* no expensive clauses */ - return 0; - - /* - * * Pullup over join if clause is higher rank than join, or if * join - * is nested loop and current path is inner child (note that * - * restrictions on the inner of a nested loop don't buy you anything - * -- * you still have to scan the entire inner relation each time). * - * Note that the cost of a secondary join clause is only what's * - * calculated by xfunc_expense(), since the actual joining * (i.e. the - * usual path_cost) is paid for by the primary join clause. - */ - if (primjoinclause != LispNil) - { - joinselec = compute_clause_selec(queryInfo, primjoinclause, LispNil); - joincost = xfunc_join_expense(parentpath, whichchild); - - if (XfuncMode == XFUNC_PULLALL || - (XfuncMode != XFUNC_WAIT && - ((joincost != 0 && - (maxrank = xfunc_rank(get_clause(maxcinfo))) > - ((joinselec - 1.0) / joincost)) - || (joincost == 0 && joinselec < 1) - || (!is_join(childpath) - && (whichchild == INNER) - && IsA(parentpath, NestPath) - &&!IsA(parentpath, HashPath) - &&!IsA(parentpath, MergePath))))) - { - - *maxcinfopt = maxcinfo; - return retval; - - } - else if (maxrank != -(MAXFLOAT)) - { - /* - * * we've left an expensive restriction below a join. Since * - * we may pullup this restriction in predmig.c, we'd best * - * set the RelOptInfo of this join to be unpruneable - */ - set_pruneable(get_parent(parentpath), false); - /* and fall through */ - } - } - return 0; -} - - -/* - ** xfunc_pullup - ** move clause from child pathnode to parent pathnode. This operation - ** makes the child pathnode produce a larger relation than it used to. - ** This means that we must construct a new RelOptInfo just for the childpath, - ** although this RelOptInfo will not be added to the list of Rels to be joined up - ** in the query; it's merely a parent for the new childpath. - ** We also have to fix up the path costs of the child and parent. - ** - ** Now returns a pointer to the new pulled-up RestrictInfo. -- JMH, 11/18/92 - */ -RestrictInfo -xfunc_pullup(Query *queryInfo, - Path childpath, - JoinPath parentpath, - RestrictInfo cinfo, /* clause to pull up */ - int whichchild, /* whether child is INNER or OUTER of join */ - int clausetype) /* whether clause to pull is join or local */ -{ - Path newkid; - RelOptInfo newrel; - Cost pulled_selec; - Cost cost; - RestrictInfo newinfo; - - /* remove clause from childpath */ - newkid = (Path) copyObject((Node) childpath); - if (clausetype == XFUNC_LOCPRD) - { - set_locrestrictinfo(newkid, - xfunc_LispRemove((LispValue) cinfo, - (List) get_loc_restrictinfo(newkid))); - } - else - { - set_pathrestrictinfo - ((JoinPath) newkid, - xfunc_LispRemove((LispValue) cinfo, - (List) get_pathrestrictinfo((JoinPath) newkid))); - } - - /* - * * give the new child path its own RelOptInfo node that reflects the * - * lack of the pulled-up predicate - */ - pulled_selec = compute_clause_selec(queryInfo, - get_clause(cinfo), LispNil); - xfunc_copyrel(get_parent(newkid), &newrel); - set_parent(newkid, newrel); - set_pathlist(newrel, makeList1(newkid)); - set_unorderedpath(newrel, (PathPtr) newkid); - set_cheapestpath(newrel, (PathPtr) newkid); - set_size(newrel, - (Count) ((Cost) get_size(get_parent(childpath)) / pulled_selec)); - - /* - * * fix up path cost of newkid. To do this we subtract away all the * - * xfunc_costs of childpath, then recompute the xfunc_costs of newkid - */ - cost = get_path_cost(newkid) - xfunc_get_path_cost(childpath); - Assert(cost >= 0); - set_path_cost(newkid, cost); - cost = get_path_cost(newkid) + xfunc_get_path_cost(newkid); - set_path_cost(newkid, cost); - - /* - * * We copy the cinfo, since it may appear in other plans, and we're - * going * to munge it. -- JMH, 7/22/92 - */ - newinfo = (RestrictInfo) copyObject((Node) cinfo); - - /* - * * Fix all vars in the clause * to point to the right varno and - * varattno in parentpath - */ - xfunc_fixvars(get_clause(newinfo), newrel, whichchild); - - /* add clause to parentpath, and fix up its cost. */ - set_locrestrictinfo(parentpath, - lispCons((LispValue) newinfo, - (LispValue) get_loc_restrictinfo(parentpath))); - /* put new childpath into the path tree */ - if (whichchild == INNER) - set_innerjoinpath(parentpath, (pathPtr) newkid); - else - set_outerjoinpath(parentpath, (pathPtr) newkid); - - /* - * * recompute parentpath cost from scratch -- the cost * of the join - * method has changed - */ - cost = xfunc_total_path_cost(parentpath); - set_path_cost(parentpath, cost); - - return newinfo; -} - -/* - ** calculate (selectivity-1)/cost. - */ -Cost -xfunc_rank(Query *queryInfo, LispValue clause) -{ - Cost selec = compute_clause_selec(queryInfo, clause, LispNil); - Cost cost = xfunc_expense(queryInfo, clause); - - if (cost == 0) - if (selec > 1) - return MAXFLOAT; - else - return -(MAXFLOAT); - return (selec - 1) / cost; -} - -/* - ** Find the "global" expense of a clause; i.e. the local expense divided - ** by the cardinalities of all the base relations of the query that are *not* - ** referenced in the clause. - */ -Cost -xfunc_expense(Query *queryInfo, clause) -LispValue clause; -{ - Cost cost = xfunc_local_expense(clause); - - if (cost) - { - Count card = xfunc_card_unreferenced(queryInfo, clause, LispNil); - - if (card) - cost /= card; - } - - return cost; -} - -/* - ** xfunc_join_expense - ** Find global expense of a join clause - */ -Cost -xfunc_join_expense(Query *queryInfo, JoinPath path, int whichchild) -{ - LispValue primjoinclause = xfunc_primary_join(path); - - /* - * * the second argument to xfunc_card_unreferenced reflects all the * - * relations involved in the join clause, i.e. all the relids in the - * RelOptInfo * of the join clause - */ - Count card = 0; - Cost cost = xfunc_expense_per_tuple(path, whichchild); - - card = xfunc_card_unreferenced(queryInfo, - primjoinclause, - get_relids(get_parent(path))); - if (primjoinclause) - cost += xfunc_local_expense(primjoinclause); - - if (card) - cost /= card; - - return cost; -} - -/* - ** Recursively find the per-tuple expense of a clause. See - ** xfunc_func_expense for more discussion. - */ -Cost -xfunc_local_expense(LispValue clause) -{ - Cost cost = 0; /* running expense */ - LispValue tmpclause; - - /* First handle the base case */ - if (IsA(clause, Const) ||IsA(clause, Var) ||IsA(clause, Param)) - return 0; - /* now other stuff */ - else if (IsA(clause, Iter)) - /* Too low. Should multiply by the expected number of iterations. */ - return xfunc_local_expense(get_iterexpr((Iter) clause)); - else if (IsA(clause, ArrayRef)) - return xfunc_local_expense(get_refexpr((ArrayRef) clause)); - else if (fast_is_clause(clause)) - return (xfunc_func_expense((LispValue) get_op(clause), - (LispValue) get_opargs(clause))); - else if (fast_is_funcclause(clause)) - return (xfunc_func_expense((LispValue) get_function(clause), - (LispValue) get_funcargs(clause))); - else if (fast_not_clause(clause)) - return xfunc_local_expense(lsecond(clause)); - else if (fast_or_clause(clause) || fast_and_clause(clause)) - { - /* find cost of evaluating each disjunct */ - for (tmpclause = lnext(clause); tmpclause != LispNil; - tmpclause = lnext(tmpclause)) - cost += xfunc_local_expense(lfirst(tmpclause)); - return cost; - } - else - { - elog(ERROR, "Clause node of undetermined type"); - return -1; - } -} - -/* - ** xfunc_func_expense - ** given a Func or Oper and its args, find its expense. - ** Note: in Stonebraker's SIGMOD '91 paper, he uses a more complicated metric - ** than the one here. We can ignore the expected number of tuples for - ** our calculations; we just need the per-tuple expense. But he also - ** proposes components to take into account the costs of accessing disk and - ** archive. We didn't adopt that scheme here; eventually the vacuum - ** cleaner should be able to tell us what percentage of bytes to find on - ** which storage level, and that should be multiplied in appropriately - ** in the cost function below. Right now we don't model the cost of - ** accessing secondary or tertiary storage, since we don't have sufficient - ** stats to do it right. - */ -Cost -xfunc_func_expense(LispValue node, LispValue args) -{ - HeapTuple tupl; /* the pg_proc tuple for each function */ - Form_pg_proc proc; /* a data structure to hold the pg_proc - * tuple */ - int width = 0; /* byte width of the field referenced by - * each clause */ - RegProcedure funcid; /* ID of function associate with node */ - Cost cost = 0; /* running expense */ - LispValue tmpclause; - LispValue operand; /* one operand of an operator */ - - if (IsA(node, Oper)) - { - /* don't trust the opid in the Oper node. Use the opno. */ - if (!(funcid = get_opcode(get_opno((Oper) node)))) - elog(ERROR, "Oper's function is undefined"); - } - else - funcid = get_funcid((Func) node); - - /* look up tuple in cache */ - tupl = SearchSysCacheTuple(PROCOID, - ObjectIdGetDatum(funcid), - 0, 0, 0); - if (!HeapTupleIsValid(tupl)) - elog(ERROR, "Cache lookup failed for procedure %u", funcid); - proc = (Form_pg_proc) GETSTRUCT(tupl); - - /* - * * if it's a Postquel function, its cost is stored in the * - * associated plan. - */ - if (proc->prolang == SQLlanguageId) - { - LispValue tmpplan; - List planlist; - - if (IsA(node, Oper) ||get_func_planlist((Func) node) == LispNil) - { - Oid *argOidVect; /* vector of argtypes */ - char *pq_src; /* text of PQ function */ - int nargs; /* num args to PQ function */ - QueryTreeList *queryTree_list; /* dummy variable */ - - /* - * * plan the function, storing it in the Func node for later * - * use by the executor. - */ - pq_src = (char *) textout(&(proc->prosrc)); - nargs = proc->pronargs; - if (nargs > 0) - argOidVect = proc->proargtypes; - planlist = (List) pg_parse_and_plan(pq_src, argOidVect, nargs, - &parseTree_list, None, FALSE); - if (IsA(node, Func)) - set_func_planlist((Func) node, planlist); - - } - else - { /* plan has been cached inside the Func - * node already */ - planlist = get_func_planlist((Func) node); - } - - /* - * * Return the sum of the costs of the plans (the PQ function * - * may have many queries in its body). - */ - foreach(tmpplan, planlist) - cost += get_cost((Plan) lfirst(tmpplan)); - return cost; - } - else - { /* it's a C function */ - - /* - * * find the cost of evaluating the function's arguments * and - * the width of the operands - */ - for (tmpclause = args; tmpclause != LispNil; - tmpclause = lnext(tmpclause)) - { - - if ((operand = lfirst(tmpclause)) != LispNil) - { - cost += xfunc_local_expense(operand); - width += xfunc_width(operand); - } - } - - /* - * * when stats become available, add in cost of accessing - * secondary * and tertiary storage here. - */ - return (cost + - (Cost) proc->propercall_cpu + - (Cost) proc->properbyte_cpu * (Cost) proc->probyte_pct / 100.00 * - (Cost) width - - /* - * Pct_of_obj_in_mem DISK_COST * proc->probyte_pct/100.00 * width - * Pct_of_obj_on_disk + ARCH_COST * proc->probyte_pct/100.00 * - * width Pct_of_obj_on_arch - */ - ); - } -} - -/* - ** xfunc_width - ** recursively find the width of a expression - */ - -int -xfunc_width(LispValue clause) -{ - Relation rd; /* Relation Descriptor */ - HeapTuple tupl; /* structure to hold a cached tuple */ - Form_pg_type type; /* structure to hold a type tuple */ - int retval = 0; - - if (IsA(clause, Const)) - { - /* base case: width is the width of this constant */ - retval = get_constlen((Const) clause); - goto exit; - } - else if (IsA(clause, ArrayRef)) - { - /* base case: width is width of the refelem within the array */ - retval = get_refelemlength((ArrayRef) clause); - goto exit; - } - else if (IsA(clause, Var)) - { - /* base case: width is width of this attribute */ - tupl = SearchSysCacheTuple(TYPEOID, - ObjectIdGetDatum(get_vartype((Var) clause)), - 0, 0, 0); - if (!HeapTupleIsValid(tupl)) - elog(ERROR, "Cache lookup failed for type %u", - get_vartype((Var) clause)); - type = (Form_pg_type) GETSTRUCT(tupl); - if (get_varattno((Var) clause) == 0) - { - /* clause is a tuple. Get its width */ - rd = heap_open(type->typrelid); - retval = xfunc_tuple_width(rd); - heap_close(rd); - } - else - { - /* attribute is a base type */ - retval = type->typlen; - } - goto exit; - } - else if (IsA(clause, Param)) - { - if (typeidTypeRelids(get_paramtype((Param) clause))) - { - /* Param node returns a tuple. Find its width */ - rd = heap_open(typeidTypeRelids(get_paramtype((Param) clause))); - retval = xfunc_tuple_width(rd); - heap_close(rd); - } - else if (get_param_tlist((Param) clause) != LispNil) - { - /* Param node projects a complex type */ - Assert(length(get_param_tlist((Param) clause)) == 1); /* sanity */ - retval = xfunc_width((LispValue) - get_expr(lfirst(get_param_tlist((Param) clause)))); - } - else - { - /* Param node returns a base type */ - retval = typeLen(typeidType(get_paramtype((Param) clause))); - } - goto exit; - } - else if (IsA(clause, Iter)) - { - /* - * * An Iter returns a setof things, so return the width of a - * single * thing. * Note: THIS MAY NOT WORK RIGHT WHEN AGGS GET - * FIXED, * SINCE AGG FUNCTIONS CHEW ON THE WHOLE SETOF THINGS!!!! * - * This whole Iter business is bogus, anyway. - */ - retval = xfunc_width(get_iterexpr((Iter) clause)); - goto exit; - } - else if (fast_is_clause(clause)) - { - /* - * * get function associated with this Oper, and treat this as * a - * Func - */ - tupl = SearchSysCacheTuple(OPEROID, - ObjectIdGetDatum(get_opno((Oper) get_op(clause))), - 0, 0, 0); - if (!HeapTupleIsValid(tupl)) - elog(ERROR, "Cache lookup failed for procedure %u", - get_opno((Oper) get_op(clause))); - return (xfunc_func_width - ((RegProcedure) (((Form_pg_operator) (GETSTRUCT(tupl)))->oprcode), - (LispValue) get_opargs(clause))); - } - else if (fast_is_funcclause(clause)) - { - Func func = (Func) get_function(clause); - - if (get_func_tlist(func) != LispNil) - { - /* - * this function has a projection on it. Get the length of - * the projected attribute - */ - Assert(length(get_func_tlist(func)) == 1); /* sanity */ - retval = xfunc_width((LispValue) - get_expr(lfirst(get_func_tlist(func)))); - goto exit; - } - else - { - return (xfunc_func_width((RegProcedure) get_funcid(func), - (LispValue) get_funcargs(clause))); - } - } - else - { - elog(ERROR, "Clause node of undetermined type"); - return -1; - } - -exit: - if (retval == -1) - retval = VARLEN_DEFAULT; - return retval; -} - -/* - ** xfunc_card_unreferenced: - ** find all relations not referenced in clause, and multiply their - ** cardinalities. Ignore relation of cardinality 0. - ** User may pass in referenced list, if they know it (useful - ** for joins). - */ -static Count -xfunc_card_unreferenced(Query *queryInfo, - LispValue clause, Relids referenced) -{ - Relids unreferenced, - allrelids = LispNil; - LispValue temp; - - /* find all relids of base relations referenced in query */ - foreach(temp, queryInfo->base_rel_list) - { - Assert(lnext(get_relids((RelOptInfo) lfirst(temp))) == LispNil); - allrelids = lappend(allrelids, - lfirst(get_relids((RelOptInfo) lfirst(temp)))); - } - - /* find all relids referenced in query but not in clause */ - if (!referenced) - referenced = xfunc_find_references(clause); - unreferenced = set_difference(allrelids, referenced); - - return xfunc_card_product(unreferenced); -} - -/* - ** xfunc_card_product - ** multiple together cardinalities of a list relations. - */ -Count -xfunc_card_product(Query *queryInfo, Relids relids) -{ - LispValue cinfonode; - LispValue temp; - RelOptInfo currel; - Cost tuples; - Count retval = 0; - - foreach(temp, relids) - { - currel = get_rel(lfirst(temp)); - tuples = get_tuples(currel); - - if (tuples) - { /* not of cardinality 0 */ - /* factor in the selectivity of all zero-cost clauses */ - foreach(cinfonode, get_restrictinfo(currel)) - { - if (!xfunc_expense(queryInfo, get_clause((RestrictInfo) lfirst(cinfonode)))) - tuples *= compute_clause_selec(queryInfo, - get_clause((RestrictInfo) lfirst(cinfonode)), - LispNil); - } - - if (retval == 0) - retval = tuples; - else - retval *= tuples; - } - } - if (retval == 0) - retval = 1; /* saves caller from dividing by zero */ - return retval; -} - - -/* - ** xfunc_find_references: - ** Traverse a clause and find all relids referenced in the clause. - */ -List -xfunc_find_references(LispValue clause) -{ - List retval = (List) LispNil; - LispValue tmpclause; - - /* Base cases */ - if (IsA(clause, Var)) - return lispCons(lfirst(get_varid((Var) clause)), LispNil); - else if (IsA(clause, Const) ||IsA(clause, Param)) - return (List) LispNil; - - /* recursion */ - else if (IsA(clause, Iter)) - - /* - * Too low. Should multiply by the expected number of iterations. - * maybe - */ - return xfunc_find_references(get_iterexpr((Iter) clause)); - else if (IsA(clause, ArrayRef)) - return xfunc_find_references(get_refexpr((ArrayRef) clause)); - else if (fast_is_clause(clause)) - { - /* string together result of all operands of Oper */ - for (tmpclause = (LispValue) get_opargs(clause); tmpclause != LispNil; - tmpclause = lnext(tmpclause)) - retval = nconc(retval, xfunc_find_references(lfirst(tmpclause))); - return retval; - } - else if (fast_is_funcclause(clause)) - { - /* string together result of all args of Func */ - for (tmpclause = (LispValue) get_funcargs(clause); - tmpclause != LispNil; - tmpclause = lnext(tmpclause)) - retval = nconc(retval, xfunc_find_references(lfirst(tmpclause))); - return retval; - } - else if (fast_not_clause(clause)) - return xfunc_find_references(lsecond(clause)); - else if (fast_or_clause(clause) || fast_and_clause(clause)) - { - /* string together result of all operands of OR */ - for (tmpclause = lnext(clause); tmpclause != LispNil; - tmpclause = lnext(tmpclause)) - retval = nconc(retval, xfunc_find_references(lfirst(tmpclause))); - return retval; - } - else - { - elog(ERROR, "Clause node of undetermined type"); - return (List) LispNil; - } -} - -/* - ** xfunc_primary_join: - ** Find the primary join clause: for Hash and Merge Joins, this is the - ** min rank Hash or Merge clause, while for Nested Loop it's the - ** min rank pathclause - */ -LispValue -xfunc_primary_join(JoinPath pathnode) -{ - LispValue joinclauselist = get_pathrestrictinfo(pathnode); - RestrictInfo mincinfo; - LispValue tmplist; - LispValue minclause = LispNil; - Cost minrank, - tmprank; - - if (IsA(pathnode, MergePath)) - { - for (tmplist = get_path_mergeclauses((MergePath) pathnode), - minclause = lfirst(tmplist), - minrank = xfunc_rank(minclause); - tmplist != LispNil; - tmplist = lnext(tmplist)) - if ((tmprank = xfunc_rank(lfirst(tmplist))) - < minrank) - { - minrank = tmprank; - minclause = lfirst(tmplist); - } - return minclause; - } - else if (IsA(pathnode, HashPath)) - { - for (tmplist = get_path_hashclauses((HashPath) pathnode), - minclause = lfirst(tmplist), - minrank = xfunc_rank(minclause); - tmplist != LispNil; - tmplist = lnext(tmplist)) - if ((tmprank = xfunc_rank(lfirst(tmplist))) - < minrank) - { - minrank = tmprank; - minclause = lfirst(tmplist); - } - return minclause; - } - - /* if we drop through, it's nested loop join */ - if (joinclauselist == LispNil) - return LispNil; - - for (tmplist = joinclauselist, mincinfo = (RestrictInfo) lfirst(joinclauselist), - minrank = xfunc_rank(get_clause((RestrictInfo) lfirst(tmplist))); - tmplist != LispNil; - tmplist = lnext(tmplist)) - if ((tmprank = xfunc_rank(get_clause((RestrictInfo) lfirst(tmplist)))) - < minrank) - { - minrank = tmprank; - mincinfo = (RestrictInfo) lfirst(tmplist); - } - return (LispValue) get_clause(mincinfo); -} - -/* - ** xfunc_get_path_cost - ** get the expensive function costs of the path - */ -Cost -xfunc_get_path_cost(Query *queryInfo, Path pathnode) -{ - Cost cost = 0; - LispValue tmplist; - Cost selec = 1.0; - - /* - * * first add in the expensive local function costs. * We ensure that - * the clauses are sorted by rank, so that we * know (via - * selectivities) the number of tuples that will be checked * by each - * function. If we're not doing any optimization of expensive * - * functions, we don't sort. - */ - if (XfuncMode != XFUNC_OFF) - set_locrestrictinfo(pathnode, lisp_qsort(get_loc_restrictinfo(pathnode), - xfunc_cinfo_compare)); - for (tmplist = get_loc_restrictinfo(pathnode), selec = 1.0; - tmplist != LispNil; - tmplist = lnext(tmplist)) - { - cost += (Cost) (xfunc_local_expense(get_clause((RestrictInfo) lfirst(tmplist))) - * (Cost) get_tuples(get_parent(pathnode)) * selec); - selec *= compute_clause_selec(queryInfo, - get_clause((RestrictInfo) lfirst(tmplist)), - LispNil); - } - - /* - * * Now add in any node-specific expensive function costs. * Again, - * we must ensure that the clauses are sorted by rank. - */ - if (IsA(pathnode, JoinPath)) - { - if (XfuncMode != XFUNC_OFF) - set_pathrestrictinfo((JoinPath) pathnode, lisp_qsort - (get_pathrestrictinfo((JoinPath) pathnode), - xfunc_cinfo_compare)); - for (tmplist = get_pathrestrictinfo((JoinPath) pathnode), selec = 1.0; - tmplist != LispNil; - tmplist = lnext(tmplist)) - { - cost += (Cost) (xfunc_local_expense(get_clause((RestrictInfo) lfirst(tmplist))) - * (Cost) get_tuples(get_parent(pathnode)) * selec); - selec *= compute_clause_selec(queryInfo, - get_clause((RestrictInfo) lfirst(tmplist)), - LispNil); - } - } - if (IsA(pathnode, HashPath)) - { - if (XfuncMode != XFUNC_OFF) - set_path_hashclauses - ((HashPath) pathnode, - lisp_qsort(get_path_hashclauses((HashPath) pathnode), - xfunc_clause_compare)); - for (tmplist = get_path_hashclauses((HashPath) pathnode), selec = 1.0; - tmplist != LispNil; - tmplist = lnext(tmplist)) - { - cost += (Cost) (xfunc_local_expense(lfirst(tmplist)) - * (Cost) get_tuples(get_parent(pathnode)) * selec); - selec *= compute_clause_selec(queryInfo, - lfirst(tmplist), LispNil); - } - } - if (IsA(pathnode, MergePath)) - { - if (XfuncMode != XFUNC_OFF) - set_path_mergeclauses - ((MergePath) pathnode, - lisp_qsort(get_path_mergeclauses((MergePath) pathnode), - xfunc_clause_compare)); - for (tmplist = get_path_mergeclauses((MergePath) pathnode), selec = 1.0; - tmplist != LispNil; - tmplist = lnext(tmplist)) - { - cost += (Cost) (xfunc_local_expense(lfirst(tmplist)) - * (Cost) get_tuples(get_parent(pathnode)) * selec); - selec *= compute_clause_selec(queryInfo, - lfirst(tmplist), LispNil); - } - } - Assert(cost >= 0); - return cost; -} - -/* - ** Recalculate the cost of a path node. This includes the basic cost of the - ** node, as well as the cost of its expensive functions. - ** We need to do this to the parent after pulling a clause from a child into a - ** parent. Thus we should only be calling this function on JoinPaths. - */ -Cost -xfunc_total_path_cost(JoinPath pathnode) -{ - Cost cost = xfunc_get_path_cost((Path) pathnode); - - Assert(IsA(pathnode, JoinPath)); - if (IsA(pathnode, MergePath)) - { - MergePath mrgnode = (MergePath) pathnode; - - cost += cost_mergejoin(get_path_cost((Path) get_outerjoinpath(mrgnode)), - get_path_cost((Path) get_innerjoinpath(mrgnode)), - get_outersortkeys(mrgnode), - get_innersortkeys(mrgnode), - get_tuples(get_parent((Path) get_outerjoinpath - (mrgnode))), - get_tuples(get_parent((Path) get_innerjoinpath - (mrgnode))), - get_width(get_parent((Path) get_outerjoinpath - (mrgnode))), - get_width(get_parent((Path) get_innerjoinpath - (mrgnode)))); - Assert(cost >= 0); - return cost; - } - else if (IsA(pathnode, HashPath)) - { - HashPath hashnode = (HashPath) pathnode; - - cost += cost_hashjoin(get_path_cost((Path) get_outerjoinpath(hashnode)), - get_path_cost((Path) get_innerjoinpath(hashnode)), - get_outerhashkeys(hashnode), - get_innerhashkeys(hashnode), - get_tuples(get_parent((Path) get_outerjoinpath - (hashnode))), - get_tuples(get_parent((Path) get_innerjoinpath - (hashnode))), - get_width(get_parent((Path) get_outerjoinpath - (hashnode))), - get_width(get_parent((Path) get_innerjoinpath - (hashnode)))); - Assert(cost >= 0); - return cost; - } - else -/* Nested Loop Join */ - { - cost += cost_nestloop(get_path_cost((Path) get_outerjoinpath(pathnode)), - get_path_cost((Path) get_innerjoinpath(pathnode)), - get_tuples(get_parent((Path) get_outerjoinpath - (pathnode))), - get_tuples(get_parent((Path) get_innerjoinpath - (pathnode))), - get_pages(get_parent((Path) get_outerjoinpath - (pathnode))), - IsA(get_innerjoinpath(pathnode), IndexPath)); - Assert(cost >= 0); - return cost; - } -} - - -/* - ** xfunc_expense_per_tuple - ** return the expense of the join *per-tuple* of the input relation. - ** The cost model here is that a join costs - ** k*card(outer)*card(inner) + l*card(outer) + m*card(inner) + n - ** - ** We treat the l and m terms by considering them to be like restrictions - ** constrained to be right under the join. Thus the cost per inner and - ** cost per outer of the join is different, reflecting these virtual nodes. - ** - ** The cost per tuple of outer is k + l/referenced(inner). Cost per tuple - ** of inner is k + m/referenced(outer). - ** The constants k, l, m and n depend on the join method. Measures here are - ** based on the costs in costsize.c, with fudging for HashJoin and Sorts to - ** make it fit our model (the 'q' in HashJoin results in a - ** card(outer)/card(inner) term, and sorting results in a log term. - - */ -Cost -xfunc_expense_per_tuple(JoinPath joinnode, int whichchild) -{ - RelOptInfo outerrel = get_parent((Path) get_outerjoinpath(joinnode)); - RelOptInfo innerrel = get_parent((Path) get_innerjoinpath(joinnode)); - Count outerwidth = get_width(outerrel); - Count outers_per_page = ceil(BLCKSZ / (outerwidth + MinTupleSize)); - - if (IsA(joinnode, HashPath)) - { - if (whichchild == INNER) - return (1 + cpu_page_weight) * outers_per_page / NBuffers; - else - return (((1 + cpu_page_weight) * outers_per_page / NBuffers) - + cpu_page_weight - / xfunc_card_product(get_relids(innerrel))); - } - else if (IsA(joinnode, MergePath)) - { - /* assumes sort exists, and costs one (I/O + CPU) per tuple */ - if (whichchild == INNER) - return ((2 * cpu_page_weight + 1) - / xfunc_card_product(get_relids(outerrel))); - else - return ((2 * cpu_page_weight + 1) - / xfunc_card_product(get_relids(innerrel))); - } - else -/* nestloop */ - { - Assert(IsA(joinnode, JoinPath)); - return cpu_page_weight; - } -} - -/* - ** xfunc_fixvars - ** After pulling up a clause, we must walk its expression tree, fixing Var - ** nodes to point to the correct varno (either INNER or OUTER, depending - ** on which child the clause was pulled from), and the right varattno in the - ** target list of the child's former relation. If the target list of the - ** child RelOptInfo does not contain the attribute we need, we add it. - */ -void -xfunc_fixvars(LispValue clause, /* clause being pulled up */ - RelOptInfo rel, /* rel it's being pulled from */ - int varno) /* whether rel is INNER or OUTER of join */ -{ - LispValue tmpclause; /* temporary variable */ - TargetEntry *tle; /* tlist member corresponding to var */ - - - if (IsA(clause, Const) ||IsA(clause, Param)) - return; - else if (IsA(clause, Var)) - { - /* here's the meat */ - tle = tlistentry_member((Var) clause, get_targetlist(rel)); - if (tle == LispNil) - { - /* - * * The attribute we need is not in the target list, * so we - * have to add it. * - * - */ - add_var_to_tlist(rel, (Var) clause); - tle = tlistentry_member((Var) clause, get_targetlist(rel)); - } - set_varno(((Var) clause), varno); - set_varattno(((Var) clause), get_resno(get_resdom(get_entry(tle)))); - } - else if (IsA(clause, Iter)) - xfunc_fixvars(get_iterexpr((Iter) clause), rel, varno); - else if (fast_is_clause(clause)) - { - xfunc_fixvars(lfirst(lnext(clause)), rel, varno); - xfunc_fixvars(lfirst(lnext(lnext(clause))), rel, varno); - } - else if (fast_is_funcclause(clause)) - for (tmpclause = lnext(clause); tmpclause != LispNil; - tmpclause = lnext(tmpclause)) - xfunc_fixvars(lfirst(tmpclause), rel, varno); - else if (fast_not_clause(clause)) - xfunc_fixvars(lsecond(clause), rel, varno); - else if (fast_or_clause(clause) || fast_and_clause(clause)) - for (tmpclause = lnext(clause); tmpclause != LispNil; - tmpclause = lnext(tmpclause)) - xfunc_fixvars(lfirst(tmpclause), rel, varno); - else - elog(ERROR, "Clause node of undetermined type"); -} - - -/* - ** Comparison function for lisp_qsort() on a list of RestrictInfo's. - ** arg1 and arg2 should really be of type (RestrictInfo *). - */ -int -xfunc_cinfo_compare(void *arg1, void *arg2) -{ - RestrictInfo info1 = *(RestrictInfo *) arg1; - RestrictInfo info2 = *(RestrictInfo *) arg2; - - LispValue clause1 = (LispValue) get_clause(info1), - clause2 = (LispValue) get_clause(info2); - - return xfunc_clause_compare((void *) &clause1, (void *) &clause2); -} - -/* - ** xfunc_clause_compare: comparison function for lisp_qsort() that compares two - ** clauses based on expense/(1 - selectivity) - ** arg1 and arg2 are really pointers to clauses. - */ -int -xfunc_clause_compare(void *arg1, void *arg2) -{ - LispValue clause1 = *(LispValue *) arg1; - LispValue clause2 = *(LispValue *) arg2; - Cost rank1, /* total xfunc rank of clause1 */ - rank2; /* total xfunc rank of clause2 */ - - rank1 = xfunc_rank(clause1); - rank2 = xfunc_rank(clause2); - - if (rank1 < rank2) - return -1; - else if (rank1 == rank2) - return 0; - else - return 1; -} - -/* - ** xfunc_disjunct_sort - ** given a list of clauses, for each clause sort the disjuncts by cost - ** (this assumes the predicates have been converted to Conjunctive NF) - ** Modifies the clause list! - */ -void -xfunc_disjunct_sort(LispValue clause_list) -{ - LispValue temp; - - foreach(temp, clause_list) - if (or_clause(lfirst(temp))) - lnext(lfirst(temp)) = lisp_qsort(lnext(lfirst(temp)), xfunc_disjunct_compare); -} - - -/* - ** xfunc_disjunct_compare: comparison function for qsort() that compares two - ** disjuncts based on cost/selec. - ** arg1 and arg2 are really pointers to disjuncts - */ -int -xfunc_disjunct_compare(Query *queryInfo, void *arg1, void *arg2) -{ - LispValue disjunct1 = *(LispValue *) arg1; - LispValue disjunct2 = *(LispValue *) arg2; - Cost cost1, /* total cost of disjunct1 */ - cost2, /* total cost of disjunct2 */ - selec1, - selec2; - Cost rank1, - rank2; - - cost1 = xfunc_expense(queryInfo, disjunct1); - cost2 = xfunc_expense(queryInfo, disjunct2); - selec1 = compute_clause_selec(queryInfo, - disjunct1, LispNil); - selec2 = compute_clause_selec(queryInfo, - disjunct2, LispNil); - - if (selec1 == 0) - rank1 = MAXFLOAT; - else if (cost1 == 0) - rank1 = 0; - else - rank1 = cost1 / selec1; - - if (selec2 == 0) - rank2 = MAXFLOAT; - else if (cost2 == 0) - rank2 = 0; - else - rank2 = cost2 / selec2; - - if (rank1 < rank2) - return -1; - else if (rank1 == rank2) - return 0; - else - return 1; -} - -/* ------------------------ UTILITY FUNCTIONS ------------------------------- */ -/* - ** xfunc_func_width - ** Given a function OID and operands, find the width of the return value. - */ -int -xfunc_func_width(RegProcedure funcid, LispValue args) -{ - Relation rd; /* Relation Descriptor */ - HeapTuple tupl; /* structure to hold a cached tuple */ - Form_pg_proc proc; /* structure to hold the pg_proc tuple */ - Form_pg_type type; /* structure to hold the pg_type tuple */ - LispValue tmpclause; - int retval; - - /* lookup function and find its return type */ - Assert(RegProcedureIsValid(funcid)); - tupl = SearchSysCacheTuple(PROCOID, - ObjectIdGetDatum(funcid), - 0, 0, 0); - if (!HeapTupleIsValid(tupl)) - elog(ERROR, "Cache lookup failed for procedure %u", funcid); - proc = (Form_pg_proc) GETSTRUCT(tupl); - - /* if function returns a tuple, get the width of that */ - if (typeidTypeRelids(proc->prorettype)) - { - rd = heap_open(typeidTypeRelids(proc->prorettype)); - retval = xfunc_tuple_width(rd); - heap_close(rd); - goto exit; - } - else -/* function returns a base type */ - { - tupl = SearchSysCacheTuple(TYPEOID, - ObjectIdGetDatum(proc->prorettype), - 0, 0, 0); - if (!HeapTupleIsValid(tupl)) - elog(ERROR, "Cache lookup failed for type %u", proc->prorettype); - type = (Form_pg_type) GETSTRUCT(tupl); - /* if the type length is known, return that */ - if (type->typlen != -1) - { - retval = type->typlen; - goto exit; - } - else -/* estimate the return size */ - { - /* find width of the function's arguments */ - for (tmpclause = args; tmpclause != LispNil; - tmpclause = lnext(tmpclause)) - retval += xfunc_width(lfirst(tmpclause)); - /* multiply by outin_ratio */ - retval = (int) (proc->prooutin_ratio / 100.0 * retval); - goto exit; - } - } -exit: - return retval; -} - -/* - ** xfunc_tuple_width - ** Return the sum of the lengths of all the attributes of a given relation - */ -int -xfunc_tuple_width(Relation rd) -{ - int i; - int retval = 0; - TupleDesc tdesc = RelationGetDescr(rd); - - for (i = 0; i < tdesc->natts; i++) - { - if (tdesc->attrs[i]->attlen != -1) - retval += tdesc->attrs[i]->attlen; - else - retval += VARLEN_DEFAULT; - } - - return retval; -} - -/* - ** xfunc_num_join_clauses - ** Find the number of join clauses associated with this join path - */ -int -xfunc_num_join_clauses(JoinPath path) -{ - int num = length(get_pathrestrictinfo(path)); - - if (IsA(path, MergePath)) - return num + length(get_path_mergeclauses((MergePath) path)); - else if (IsA(path, HashPath)) - return num + length(get_path_hashclauses((HashPath) path)); - else - return num; -} - -/* - ** xfunc_LispRemove - ** Just like LispRemove, but it whines if the item to be removed ain't there - */ -LispValue -xfunc_LispRemove(LispValue foo, List bar) -{ - LispValue temp = LispNil; - LispValue result = LispNil; - int sanity = false; - - for (temp = bar; !null(temp); temp = lnext(temp)) - if (!equal((Node) (foo), (Node) (lfirst(temp)))) - result = lappend(result, lfirst(temp)); - else - sanity = true; /* found a matching item to remove! */ - - if (!sanity) - elog(ERROR, "xfunc_LispRemove: didn't find a match!"); - - return result; -} - -#define Node_Copy(a, b, c, d) \ -do { \ - if (NodeCopy((Node)((a)->d), (Node*)&((b)->d), c) != true) \ - { \ - return false; \ - } \ -} while(0) - -/* - ** xfunc_copyrel - ** Just like _copyRel, but doesn't copy the paths - */ -bool -xfunc_copyrel(RelOptInfo from, RelOptInfo *to) -{ - RelOptInfo newnode; - - Pointer (*alloc) () = palloc; - - /* COPY_CHECKARGS() */ - if (to == NULL) - return false; - - /* COPY_CHECKNULL() */ - if (from == NULL) - { - (*to) = NULL; - return true; - } - - /* COPY_NEW(c) */ - newnode = (RelOptInfo) (*alloc) (classSize(RelOptInfo)); - if (newnode == NULL) - return false; - - /* - * copy node superclass fields - */ - CopyNodeFields((Node) from, (Node) newnode, alloc); - - /* - * copy remainder of node - */ - Node_Copy(from, newnode, alloc, relids); - - newnode->indexed = from->indexed; - newnode->pages = from->pages; - newnode->tuples = from->tuples; - newnode->size = from->size; - newnode->width = from->width; - - Node_Copy(from, newnode, alloc, targetlist); - - /* - * No!!!! Node_Copy(from, newnode, alloc, pathlist); - * Node_Copy(from, newnode, alloc, unorderedpath); Node_Copy(from, - * newnode, alloc, cheapestpath); - */ -#if 0 /* can't use Node_copy now. 2/95 -ay */ - Node_Copy(from, newnode, alloc, classlist); - Node_Copy(from, newnode, alloc, indexkeys); - Node_Copy(from, newnode, alloc, ordering); -#endif - Node_Copy(from, newnode, alloc, restrictinfo); - Node_Copy(from, newnode, alloc, joininfo); - Node_Copy(from, newnode, alloc, innerjoin); - - (*to) = newnode; - return true; -} |