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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2000-10-26 21:38:24 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2000-10-26 21:38:24 +0000 |
| commit | 2f35b4efdbec6c161ca9bd491d6345134910c425 (patch) | |
| tree | 2424351bcc12a8ddf2b716b28f53d2c37c79e507 /src/backend/optimizer/plan/createplan.c | |
| parent | c9476bafdb1b97d0d21d92788f93298962145479 (diff) | |
| download | postgresql-2f35b4efdbec6c161ca9bd491d6345134910c425.tar.gz postgresql-2f35b4efdbec6c161ca9bd491d6345134910c425.zip | |
Re-implement LIMIT/OFFSET as a plan node type, instead of a hack in
ExecutorRun. This allows LIMIT to work in a view. Also, LIMIT in a
cursor declaration will behave in a reasonable fashion, whereas before
it was overridden by the FETCH count.
Diffstat (limited to 'src/backend/optimizer/plan/createplan.c')
| -rw-r--r-- | src/backend/optimizer/plan/createplan.c | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c index eb005121cd5..a865da61b92 100644 --- a/src/backend/optimizer/plan/createplan.c +++ b/src/backend/optimizer/plan/createplan.c @@ -10,7 +10,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.98 2000/10/05 19:11:29 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/createplan.c,v 1.99 2000/10/26 21:36:09 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -1651,6 +1651,27 @@ make_setop(SetOpCmd cmd, List *tlist, Plan *lefttree, return node; } +Limit * +make_limit(List *tlist, Plan *lefttree, + Node *limitOffset, Node *limitCount) +{ + Limit *node = makeNode(Limit); + Plan *plan = &node->plan; + + copy_plan_costsize(plan, lefttree); + + plan->state = (EState *) NULL; + plan->targetlist = tlist; + plan->qual = NIL; + plan->lefttree = lefttree; + plan->righttree = NULL; + + node->limitOffset = limitOffset; + node->limitCount = limitCount; + + return node; +} + Result * make_result(List *tlist, Node *resconstantqual, |