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Make GROUP BY work properly for datatypes that only support hashing and not

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sorting.  The infrastructure for this was all in place already; it's only
necessary to fix the planner to not assume that sorting is always an available
option.
This commit is contained in:
Tom Lane
2008-08-03 19:10:52 +00:00
parent 82a1f09953
commit ec73b56a31
3 changed files with 112 additions and 58 deletions
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8
src/backend/parser/parse_clause.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/parse_clause.c,v 1.172 2008/08/02 21:32:00 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/parse_clause.c,v 1.173 2008/08/03 19:10:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -1351,15 +1351,11 @@ transformGroupClause(ParseState *pstate, List *grouplist,
/*
* If no match in ORDER BY, just add it to the result using
* default sort/group semantics.
*
* XXX for now, the planner requires groupClause to be sortable,
* so we have to insist on that here.
*/
if (!found)
result = addTargetToGroupList(pstate, tle,
result, *targetlist,
true, /* XXX for now */
true);
false, true);
}
return result;