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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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4
src/include/optimizer/clauses.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/optimizer/clauses.h,v 1.72 2004/01/05 18:04:39 tgl Exp $
* $PostgreSQL: pgsql/src/include/optimizer/clauses.h,v 1.73 2004/03/14 23:41:27 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -63,6 +63,8 @@ extern bool has_distinct_on_clause(Query *query);
extern int NumRelids(Node *clause);
extern void CommuteClause(OpExpr *clause);
extern void set_coercionform_dontcare(Node *node);
extern Node *eval_const_expressions(Node *node);
extern bool expression_tree_walker(Node *node, bool (*walker) (),