database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-26 01:22:12 +03:00
Code Activity

First steps towards index scans with heap access decoupled from index

Browse Source 
access: define new index access method functions 'amgetmulti' that can
fetch multiple TIDs per call.  (The functions exist but are totally
untested as yet.)  Since I was modifying pg_am anyway, remove the
no-longer-needed 'rel' parameter from amcostestimate functions, and
also remove the vestigial amowner column that was creating useless
work for Alvaro's shared-object-dependencies project.
Initdb forced due to changes in pg_am.
This commit is contained in:
Tom Lane
2005-03-27 23:53:05 +00:00
parent 351519affc
commit bf3dbb5881
20 changed files with 535 additions and 174 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/backend/optimizer/path/costsize.c
View File

@ -49,7 +49,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.139 2005/03/27 06:29:35 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/path/costsize.c,v 1.140 2005/03/27 23:53:02 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -277,9 +277,8 @@ cost_index(Path *path, Query *root,
* index (ie, the fraction of main-table tuples we will have to
* retrieve) and its correlation to the main-table tuple order.
*/
OidFunctionCall8(index->amcostestimate,
OidFunctionCall7(index->amcostestimate,
PointerGetDatum(root),
PointerGetDatum(baserel),
PointerGetDatum(index),
PointerGetDatum(indexQuals),
PointerGetDatum(&indexStartupCost),