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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2010-02-12 17:33:21 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2010-02-12 17:33:21 +0000 |
| commit | ec4be2ee6827b6bd85e0813c7a8993cfbb0e6fa7 (patch) | |
| tree | f4f98eb0f5ff45dbcd23778a1c683a1f597431b7 /src/backend/optimizer/plan/createplan.c | |
| parent | a5348fafd182d5b84c89b43af3746711ce28f319 (diff) | |
| download | postgresql-ec4be2ee6827b6bd85e0813c7a8993cfbb0e6fa7.tar.gz postgresql-ec4be2ee6827b6bd85e0813c7a8993cfbb0e6fa7.zip | |
Extend the set of frame options supported for window functions.
This patch allows the frame to start from CURRENT ROW (in either RANGE or
ROWS mode), and it also adds support for ROWS n PRECEDING and ROWS n FOLLOWING
start and end points. (RANGE value PRECEDING/FOLLOWING isn't there yet ---
the grammar works, but that's all.)
Hitoshi Harada, reviewed by Pavel Stehule
Diffstat (limited to 'src/backend/optimizer/plan/createplan.c')
| -rw-r--r-- | src/backend/optimizer/plan/createplan.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c index 41e048359f3..112c2389d11 100644 --- a/src/backend/optimizer/plan/createplan.c +++ b/src/backend/optimizer/plan/createplan.c @@ -10,7 +10,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.270 2010/01/02 16:57:47 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.271 2010/02/12 17:33:20 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -3364,7 +3364,8 @@ make_windowagg(PlannerInfo *root, List *tlist, int numWindowFuncs, Index winref, int partNumCols, AttrNumber *partColIdx, Oid *partOperators, int ordNumCols, AttrNumber *ordColIdx, Oid *ordOperators, - int frameOptions, Plan *lefttree) + int frameOptions, Node *startOffset, Node *endOffset, + Plan *lefttree) { WindowAgg *node = makeNode(WindowAgg); Plan *plan = &node->plan; @@ -3379,6 +3380,8 @@ make_windowagg(PlannerInfo *root, List *tlist, node->ordColIdx = ordColIdx; node->ordOperators = ordOperators; node->frameOptions = frameOptions; + node->startOffset = startOffset; + node->endOffset = endOffset; copy_plan_costsize(plan, lefttree); /* only care about copying size */ cost_windowagg(&windowagg_path, root, |