diff options
| author | Tom Lane <tgl@sss.pgh.pa.us> | 2002-11-30 00:08:22 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2002-11-30 00:08:22 +0000 |
| commit | ddb2d78de0172b1f3a00c8e3bf35345af9952f43 (patch) | |
| tree | 75aaa2922e21b78514cd592241c1718a2e6a4ba8 /src/backend/nodes/copyfuncs.c | |
| parent | f68f11928d5c791873073c882775dae10283ff49 (diff) | |
Upgrade planner and executor to allow multiple hash keys for a hash join,
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.
Diffstat (limited to 'src/backend/nodes/copyfuncs.c')
| -rw-r--r-- | src/backend/nodes/copyfuncs.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/src/backend/nodes/copyfuncs.c b/src/backend/nodes/copyfuncs.c index a678d6326b1..7798913cde5 100644 --- a/src/backend/nodes/copyfuncs.c +++ b/src/backend/nodes/copyfuncs.c @@ -15,7 +15,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.223 2002/11/25 21:29:36 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.224 2002/11/30 00:08:16 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -429,7 +429,6 @@ _copyHashJoin(HashJoin *from) * copy remainder of node */ COPY_NODE_FIELD(hashclauses); - COPY_SCALAR_FIELD(hashjoinop); /* subPlan list must point to subplans in the new subtree, not the old */ FIX_SUBPLAN_LINKS(join.plan.subPlan, hashclauses); @@ -593,9 +592,9 @@ _copyHash(Hash *from) /* * copy remainder of node */ - COPY_NODE_FIELD(hashkey); + COPY_NODE_FIELD(hashkeys); - /* XXX could the hashkey contain subplans? Not at present... */ + /* XXX could the hashkeys contain subplans? Not at present... */ return newnode; } |