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Add aggsortop column to pg_aggregate, so that MIN/MAX optimization can

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be supported for all datatypes.  Add CREATE AGGREGATE and pg_dump support
too.  Add specialized min/max aggregates for bpchar, instead of depending
on text's min/max, because otherwise the possible use of bpchar indexes
cannot be recognized.
initdb forced because of catalog changes.
This commit is contained in:
Tom Lane
2005-04-12 04:26:34 +00:00
parent 3803f24379
commit 2e7a68896b
15 changed files with 356 additions and 123 deletions
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8
src/backend/commands/aggregatecmds.c
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@@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/aggregatecmds.c,v 1.23 2005/03/29 00:16:57 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/aggregatecmds.c,v 1.24 2005/04/12 04:26:20 tgl Exp $
*
* DESCRIPTION
* The "DefineFoo" routines take the parse tree and pick out the
@@ -51,6 +51,7 @@ DefineAggregate(List *names, List *parameters)
AclResult aclresult;
List *transfuncName = NIL;
List *finalfuncName = NIL;
List *sortoperatorName = NIL;
TypeName *baseType = NULL;
TypeName *transType = NULL;
char *initval = NULL;
@@ -81,6 +82,8 @@ DefineAggregate(List *names, List *parameters)
transfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "finalfunc") == 0)
finalfuncName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "sortop") == 0)
sortoperatorName = defGetQualifiedName(defel);
else if (pg_strcasecmp(defel->defname, "basetype") == 0)
baseType = defGetTypeName(defel);
else if (pg_strcasecmp(defel->defname, "stype") == 0)
@@ -143,9 +146,10 @@ DefineAggregate(List *names, List *parameters)
*/
AggregateCreate(aggName, /* aggregate name */
aggNamespace, /* namespace */
baseTypeId, /* type of data being aggregated */
transfuncName, /* step function name */
finalfuncName, /* final function name */
baseTypeId, /* type of data being aggregated */
sortoperatorName, /* sort operator name */
transTypeId, /* transition data type */
initval); /* initial condition */
}