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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2008-12-31 00:08:39 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2008-12-31 00:08:39 +0000 |
| commit | 8e8854daa2b4b3ef9e3fc1a56c79608a70018058 (patch) | |
| tree | a6c4cf4b43acc764a38071843c10dc3edb3ca32e /src/backend/optimizer/plan/createplan.c | |
| parent | 0fb9be7acfb31ba38c1bbdd7883d5d03f6e261e5 (diff) | |
| download | postgresql-8e8854daa2b4b3ef9e3fc1a56c79608a70018058.tar.gz postgresql-8e8854daa2b4b3ef9e3fc1a56c79608a70018058.zip | |
Add some basic support for window frame clauses to the window-functions
patch. This includes the ability to force the frame to cover the whole
partition, and the ability to make the frame end exactly on the current row
rather than its last ORDER BY peer. Supporting any more of the full SQL
frame-clause syntax will require nontrivial hacking on the window aggregate
code, so it'll have to wait for 8.5 or beyond.
Diffstat (limited to 'src/backend/optimizer/plan/createplan.c')
| -rw-r--r-- | src/backend/optimizer/plan/createplan.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c index b53b5e1470e..55baa9a51a6 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 1.253 2008/12/28 18:53:56 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/optimizer/plan/createplan.c,v 1.254 2008/12/31 00:08:36 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -3261,22 +3261,25 @@ make_agg(PlannerInfo *root, List *tlist, List *qual, } WindowAgg * -make_windowagg(PlannerInfo *root, List *tlist, int numWindowFuncs, +make_windowagg(PlannerInfo *root, List *tlist, + int numWindowFuncs, Index winref, int partNumCols, AttrNumber *partColIdx, Oid *partOperators, int ordNumCols, AttrNumber *ordColIdx, Oid *ordOperators, - Plan *lefttree) + int frameOptions, Plan *lefttree) { WindowAgg *node = makeNode(WindowAgg); Plan *plan = &node->plan; Path windowagg_path; /* dummy for result of cost_windowagg */ QualCost qual_cost; + node->winref = winref; node->partNumCols = partNumCols; node->partColIdx = partColIdx; node->partOperators = partOperators; node->ordNumCols = ordNumCols; node->ordColIdx = ordColIdx; node->ordOperators = ordOperators; + node->frameOptions = frameOptions; copy_plan_costsize(plan, lefttree); /* only care about copying size */ cost_windowagg(&windowagg_path, root, |