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Push index operator lossiness determination down to GIST/GIN opclass

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"consistent" functions, and remove pg_amop.opreqcheck, as per recent
discussion.  The main immediate benefit of this is that we no longer need
8.3's ugly hack of requiring @@@ rather than @@ to test weight-using tsquery
searches on GIN indexes.  In future it should be possible to optimize some
other queries better than is done now, by detecting at runtime whether the
index match is exact or not.

Tom Lane, after an idea of Heikki's, and with some help from Teodor.
This commit is contained in:
Tom Lane
2008-04-14 17:05:34 +00:00
parent 10be77c173
commit 9b5c8d45f6
68 changed files with 1023 additions and 785 deletions
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8
contrib/intarray/uninstall__int.sql
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@ -1,4 +1,4 @@
/* $PostgreSQL: pgsql/contrib/intarray/uninstall__int.sql,v 1.8 2007/11/13 04:24:28 momjian Exp $ */
/* $PostgreSQL: pgsql/contrib/intarray/uninstall__int.sql,v 1.9 2008/04/14 17:05:32 tgl Exp $ */
-- Adjust this setting to control where the objects get created.
SET search_path = public;
@ -7,7 +7,7 @@ DROP OPERATOR CLASS gin__int_ops USING gin;
DROP FUNCTION ginint4_queryextract(internal, internal, int2);
DROP FUNCTION ginint4_consistent(internal, int2, internal);
DROP FUNCTION ginint4_consistent(internal, int2, internal, internal);
DROP OPERATOR CLASS gist__intbig_ops USING gist;
@ -23,7 +23,7 @@ DROP FUNCTION g_intbig_decompress(internal);
DROP FUNCTION g_intbig_compress(internal);
DROP FUNCTION g_intbig_consistent(internal,internal,int4);
DROP FUNCTION g_intbig_consistent(internal,internal,int,oid,internal);
DROP TYPE intbig_gkey CASCADE;
@ -41,7 +41,7 @@ DROP FUNCTION g_int_decompress(internal);
DROP FUNCTION g_int_compress(internal);
DROP FUNCTION g_int_consistent(internal,_int4,int4);
DROP FUNCTION g_int_consistent(internal,_int4,int,oid,internal);
DROP OPERATOR & (_int4, _int4);