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Tweak planner so that index expressions and predicates are matched to

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queries without regard to whether coercions are stated explicitly or
implicitly.  Per suggestion from Stephan Szabo.
This commit is contained in:
Tom Lane
2004-03-14 23:41:27 +00:00
parent e1d08faf04
commit 04226b6404
5 changed files with 58 additions and 10 deletions
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8
src/backend/nodes/equalfuncs.c
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@@ -18,7 +18,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.216 2004/03/11 01:47:35 ishii Exp $
* $PostgreSQL: pgsql/src/backend/nodes/equalfuncs.c,v 1.217 2004/03/14 23:41:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -231,7 +231,7 @@ _equalFuncExpr(FuncExpr *a, FuncExpr *b)
COMPARE_SCALAR_FIELD(funcretset);
/*
* Special-case COERCE_DONTCARE, so that pathkeys can build coercion
* Special-case COERCE_DONTCARE, so that planner can build coercion
* nodes that are equal() to both explicit and implicit coercions.
*/
if (a->funcformat != b->funcformat &&
@@ -372,7 +372,7 @@ _equalRelabelType(RelabelType *a, RelabelType *b)
COMPARE_SCALAR_FIELD(resulttypmod);
/*
* Special-case COERCE_DONTCARE, so that pathkeys can build coercion
* Special-case COERCE_DONTCARE, so that planner can build coercion
* nodes that are equal() to both explicit and implicit coercions.
*/
if (a->relabelformat != b->relabelformat &&
@@ -472,7 +472,7 @@ _equalCoerceToDomain(CoerceToDomain *a, CoerceToDomain *b)
COMPARE_SCALAR_FIELD(resulttypmod);
/*
* Special-case COERCE_DONTCARE, so that pathkeys can build coercion
* Special-case COERCE_DONTCARE, so that planner can build coercion
* nodes that are equal() to both explicit and implicit coercions.
*/
if (a->coercionformat != b->coercionformat &&