database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-11-09 06:21:09 +03:00
Code Activity

Merge restrictlist_selectivity into clauselist_selectivity by

Browse Source 
teaching the latter to accept either RestrictInfo nodes or bare
clause expressions; and cache the selectivity result in the RestrictInfo
node when possible.  This extends the caching behavior of approx_selectivity
to many more contexts, and should reduce duplicate selectivity
calculations.
This commit is contained in:
Tom Lane
2004-01-04 03:51:52 +00:00
parent 21a1202281
commit 82b4dd394f
12 changed files with 196 additions and 200 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
src/backend/nodes/copyfuncs.c
View File

@@ -15,7 +15,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.271 2004/01/04 00:07:32 tgl Exp $
* $PostgreSQL: pgsql/src/backend/nodes/copyfuncs.c,v 1.272 2004/01/04 03:51:52 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1170,6 +1170,7 @@ _copyRestrictInfo(RestrictInfo *from)
COPY_NODE_FIELD(clause);
COPY_SCALAR_FIELD(ispusheddown);
COPY_SCALAR_FIELD(canjoin);
COPY_BITMAPSET_FIELD(clause_relids);
COPY_BITMAPSET_FIELD(left_relids);
COPY_BITMAPSET_FIELD(right_relids);
COPY_NODE_FIELD(orclause);