database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-05 07:21:24 +03:00
Code Activity

Upgrade planner and executor to allow multiple hash keys for a hash join,

Browse Source 
instead of only one.  This should speed up planning (only one hash path
to consider for a given pair of relations) as well as allow more effective
hashing, when there are multiple hashable joinclauses.
This commit is contained in:
Tom Lane
2002-11-30 00:08:22 +00:00
parent f68f11928d
commit ddb2d78de0
14 changed files with 182 additions and 133 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/backend/nodes/outfuncs.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.183 2002/11/25 21:29:36 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/outfuncs.c,v 1.184 2002/11/30 00:08:16 tgl Exp $
*
* NOTES
* Every node type that can appear in stored rules' parsetrees *must*
@ -538,7 +538,6 @@ _outHashJoin(StringInfo str, HashJoin *node)
_outJoinPlanInfo(str, (Join *) node);
WRITE_NODE_FIELD(hashclauses);
WRITE_OID_FIELD(hashjoinop);
}
static void
@ -634,7 +633,7 @@ _outHash(StringInfo str, Hash *node)
_outPlanInfo(str, (Plan *) node);
WRITE_NODE_FIELD(hashkey);
WRITE_NODE_FIELD(hashkeys);
}
static void