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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/include/optimizer/pathnode.h | |
| parent | 6f64c2e54a0b14154a335249f4dca91a39c61c50 (diff) | |
| download | postgresql-3a94e789f5c9537d804210be3cb26f7fb08e3b9e.tar.gz postgresql-3a94e789f5c9537d804210be3cb26f7fb08e3b9e.zip | |
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/include/optimizer/pathnode.h')
| -rw-r--r-- | src/include/optimizer/pathnode.h | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/src/include/optimizer/pathnode.h b/src/include/optimizer/pathnode.h index 0bf57ef0cc5..e5810a042f2 100644 --- a/src/include/optimizer/pathnode.h +++ b/src/include/optimizer/pathnode.h @@ -1,13 +1,13 @@ /*------------------------------------------------------------------------- * * pathnode.h - * prototypes for pathnode.c, indexnode.c, relnode.c. + * prototypes for pathnode.c, relnode.c. * * * Portions Copyright (c) 1996-2000, PostgreSQL, Inc * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: pathnode.h,v 1.28 2000/09/12 21:07:11 tgl Exp $ + * $Id: pathnode.h,v 1.29 2000/09/29 18:21:40 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -32,6 +32,7 @@ extern IndexPath *create_index_path(Query *root, RelOptInfo *rel, List *restriction_clauses, ScanDirection indexscandir); extern TidPath *create_tidscan_path(RelOptInfo *rel, List *tideval); +extern Path *create_subqueryscan_path(RelOptInfo *rel); extern NestPath *create_nestloop_path(RelOptInfo *joinrel, JoinType jointype, @@ -66,9 +67,4 @@ extern RelOptInfo *get_join_rel(Query *root, RelOptInfo *outer_rel, RelOptInfo *inner_rel, List **restrictlist_ptr); -/* - * prototypes for indexnode.h - */ -extern List *find_relation_indices(Query *root, RelOptInfo *rel); - #endif /* PATHNODE_H */ |