database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-07 00:36:50 +03:00
Code Activity

Tweak querytree-dependency-extraction code so that columns of tables

Browse Source 
that are explicitly JOINed are not considered dependencies unless they
are actually used in the query: mere presence in the joinaliasvars
list of a JOIN RTE doesn't count as being used.  The patch touches
a number of files because I needed to generalize the API of
query_tree_walker to support an additional flag bit, but the changes
are otherwise quite small.
This commit is contained in:
Tom Lane
2002-09-11 14:48:55 +00:00
parent d634a5903f
commit 6fdc44be71
8 changed files with 89 additions and 55 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/backend/rewrite/rewriteHandler.c
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteHandler.c,v 1.108 2002/09/04 20:31:25 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteHandler.c,v 1.109 2002/09/11 14:48:54 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -822,11 +822,12 @@ fireRIRrules(Query *parsetree)
}
/*
* Recurse into sublink subqueries, too.
* Recurse into sublink subqueries, too. But we already did the ones
* in the rtable.
*/
if (parsetree->hasSubLinks)
query_tree_walker(parsetree, fireRIRonSubLink, NULL,
false /* already handled the ones in rtable */ );
QTW_IGNORE_SUBQUERIES);
/*
* If the query was marked having aggregates, check if this is still