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Planner failed to be smart about binary-compatible expressions in pathkeys

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and hash bucket-size estimation.  Issue has been there awhile but is more
critical in 7.4 because it affects varchar columns.  Per report from
Greg Stark.
This commit is contained in:
Tom Lane
2003-12-03 17:45:10 +00:00
parent 32580efafb
commit 7f8f7665fc
4 changed files with 64 additions and 13 deletions
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3
src/include/utils/lsyscache.h
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@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/utils/lsyscache.h,v 1.85 2003/11/29 22:41:15 pgsql Exp $
* $PostgreSQL: pgsql/src/include/utils/lsyscache.h,v 1.86 2003/12/03 17:45:10 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -42,6 +42,7 @@ extern bool opclass_is_btree(Oid opclass);
extern bool opclass_is_hash(Oid opclass);
extern RegProcedure get_opcode(Oid opno);
extern char *get_opname(Oid opno);
extern void op_input_types(Oid opno, Oid *lefttype, Oid *righttype);
extern bool op_mergejoinable(Oid opno, Oid *leftOp, Oid *rightOp);
extern void op_mergejoin_crossops(Oid opno, Oid *ltop, Oid *gtop,
RegProcedure *ltproc, RegProcedure *gtproc);