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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2000-09-29 18:21:41 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2000-09-29 18:21:41 +0000 |
| commit | 3a94e789f5c9537d804210be3cb26f7fb08e3b9e (patch) | |
| tree | f1eac12405e3c0ded881d7dd7e59cec35b30c335 /src/backend/optimizer/path/costsize.c | |
| parent | 6f64c2e54a0b14154a335249f4dca91a39c61c50 (diff) | |
| download | postgresql-3a94e789f5c9537d804210be3cb26f7fb08e3b9e.tar.gz | |
Subselects in FROM clause, per ISO syntax: FROM (SELECT ...) [AS] alias.
(Don't forget that an alias is required.) Views reimplemented as expanding
to subselect-in-FROM. Grouping, aggregates, DISTINCT in views actually
work now (he says optimistically). No UNION support in subselects/views
yet, but I have some ideas about that. Rule-related permissions checking
moved out of rewriter and into executor.
INITDB REQUIRED!
Diffstat (limited to 'src/backend/optimizer/path/costsize.c')
| -rw-r--r-- | src/backend/optimizer/path/costsize.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c index 0f26dc7872..025f011657 100644 --- a/src/backend/optimizer/path/costsize.c +++ b/src/backend/optimizer/path/costsize.c @@ -42,7 +42,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/path/costsize.c,v 1.62 2000/06/18 22:44:06 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/path/costsize.c,v 1.63 2000/09/29 18:21:32 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -115,6 +115,7 @@ cost_seqscan(Path *path, RelOptInfo *baserel) /* Should only be applied to base relations */ Assert(length(baserel->relids) == 1); + Assert(!baserel->issubquery); if (!enable_seqscan) startup_cost += disable_cost; @@ -223,6 +224,7 @@ cost_index(Path *path, Query *root, /* Should only be applied to base relations */ Assert(IsA(baserel, RelOptInfo) &&IsA(index, IndexOptInfo)); Assert(length(baserel->relids) == 1); + Assert(!baserel->issubquery); if (!enable_indexscan && !is_injoin) startup_cost += disable_cost; |