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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2008-12-28 18:54:01 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2008-12-28 18:54:01 +0000 |
| commit | 95b07bc7f5010233f52f9d11da74e2e5b653b0a7 (patch) | |
| tree | 48f5858bf4eca1bfb316ef02bb959ca85f568e0a /src/backend/optimizer/plan/planagg.c | |
| parent | 38e9348282e9d078487147ba8a85aebec54e3a08 (diff) | |
| download | postgresql-95b07bc7f5010233f52f9d11da74e2e5b653b0a7.tar.gz | |
Support window functions a la SQL:2008.
Hitoshi Harada, with some kibitzing from Heikki and Tom.
Diffstat (limited to 'src/backend/optimizer/plan/planagg.c')
| -rw-r--r-- | src/backend/optimizer/plan/planagg.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/backend/optimizer/plan/planagg.c b/src/backend/optimizer/plan/planagg.c index 8a6b2ad034..f0f17d5f95 100644 --- a/src/backend/optimizer/plan/planagg.c +++ b/src/backend/optimizer/plan/planagg.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/optimizer/plan/planagg.c,v 1.43 2008/08/25 22:42:33 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/optimizer/plan/planagg.c,v 1.44 2008/12/28 18:53:56 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -95,11 +95,11 @@ optimize_minmax_aggregates(PlannerInfo *root, List *tlist, Path *best_path) /* * Reject unoptimizable cases. * - * We don't handle GROUP BY, because our current implementations of - * grouping require looking at all the rows anyway, and so there's not - * much point in optimizing MIN/MAX. + * We don't handle GROUP BY or windowing, because our current + * implementations of grouping require looking at all the rows anyway, + * and so there's not much point in optimizing MIN/MAX. */ - if (parse->groupClause) + if (parse->groupClause || parse->hasWindowFuncs) return NULL; /* |