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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2004-01-05 23:39:54 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2004-01-05 23:39:54 +0000 |
| commit | fa559a86eec2ae90fd63fd7e6563e42f7dc619e0 (patch) | |
| tree | a43de4df13060be5df59c38d7b3b9a5e47069e05 /src/include/optimizer/paths.h | |
| parent | 5d472f64647346a44af6ab2ab9ca70cadf9fe788 (diff) | |
| download | postgresql-fa559a86eec2ae90fd63fd7e6563e42f7dc619e0.tar.gz postgresql-fa559a86eec2ae90fd63fd7e6563e42f7dc619e0.zip | |
Adjust indexscan planning logic to keep RestrictInfo nodes associated
with index qual clauses in the Path representation. This saves a little
work during createplan and (probably more importantly) allows reuse of
cached selectivity estimates during indexscan planning. Also fix latent
bug: wrong plan would have been generated for a 'special operator' used
in a nestloop-inner-indexscan join qual, because the special operator
would not have gotten into the list of quals to recheck. This bug is
only latent because at present the special-operator code could never
trigger on a join qual, but sooner or later someone will want to do it.
Diffstat (limited to 'src/include/optimizer/paths.h')
| -rw-r--r-- | src/include/optimizer/paths.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/include/optimizer/paths.h b/src/include/optimizer/paths.h index e1a46bcb3f8..40f7206fac3 100644 --- a/src/include/optimizer/paths.h +++ b/src/include/optimizer/paths.h @@ -8,7 +8,7 @@ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/include/optimizer/paths.h,v 1.72 2004/01/05 05:07:36 tgl Exp $ + * $PostgreSQL: pgsql/src/include/optimizer/paths.h,v 1.73 2004/01/05 23:39:54 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -44,6 +44,8 @@ extern List *group_clauses_by_indexkey_for_or(RelOptInfo *rel, extern List *expand_indexqual_conditions(IndexOptInfo *index, List *clausegroups); extern void check_partial_indexes(Query *root, RelOptInfo *rel); +extern List *flatten_clausegroups_list(List *clausegroups); +extern Expr *make_expr_from_indexclauses(List *indexclauses); /* * orindxpath.c |