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Change pg_amop's index on (amopclaid,amopopr) to index (amopopr,amopclaid).

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This makes no difference for existing uses, but allows SelectSortFunction()
and pred_test_simple_clause() to use indexscans instead of seqscans to
locate entries for a particular operator in pg_amop.  Better yet, they can
use the SearchSysCacheList() API to cache the search results.
This commit is contained in:
Tom Lane
2003-05-13 04:38:58 +00:00
parent 30f609484d
commit 1c9ac7dfd0
6 changed files with 97 additions and 109 deletions
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6
src/backend/utils/cache/lsyscache.c vendored
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.93 2003/05/09 18:08:48 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.94 2003/05/13 04:38:58 tgl Exp $
*
* NOTES
* Eventually, the index information should go through here, too.
@ -44,8 +44,8 @@ bool
op_in_opclass(Oid opno, Oid opclass)
{
return SearchSysCacheExists(AMOPOPID,
ObjectIdGetDatum(opclass),
ObjectIdGetDatum(opno),
ObjectIdGetDatum(opclass),
0, 0);
}
@ -67,8 +67,8 @@ op_requires_recheck(Oid opno, Oid opclass)
bool result;
tp = SearchSysCache(AMOPOPID,
ObjectIdGetDatum(opclass),
ObjectIdGetDatum(opno),
ObjectIdGetDatum(opclass),
0, 0);
if (!HeapTupleIsValid(tp))
elog(ERROR, "op_requires_recheck: op %u is not a member of opclass %u",

4
src/backend/utils/cache/syscache.c vendored
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/syscache.c,v 1.87 2002/09/04 20:31:30 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/syscache.c,v 1.88 2003/05/13 04:38:58 tgl Exp $
*
* NOTES
* These routines allow the parser/planner/executor to perform
@ -128,8 +128,8 @@ static const struct cachedesc cacheinfo[] = {
0,
2,
{
Anum_pg_amop_amopclaid,
Anum_pg_amop_amopopr,
Anum_pg_amop_amopclaid,
0,
0
}},