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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2010-07-12 17:01:06 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2010-07-12 17:01:06 +0000 |
| commit | 53e757689ce94520f1c53a89dbaa14ea57b09da7 (patch) | |
| tree | afa68ba05699223a719104b953bc20f37d4c33d1 /src/backend/executor/nodeHash.c | |
| parent | 5a3489357fb61f1ea76412ada33549aca152ad55 (diff) | |
| download | postgresql-53e757689ce94520f1c53a89dbaa14ea57b09da7.tar.gz postgresql-53e757689ce94520f1c53a89dbaa14ea57b09da7.zip | |
Make NestLoop plan nodes pass outer-relation variables into their inner
relation using the general PARAM_EXEC executor parameter mechanism, rather
than the ad-hoc kluge of passing the outer tuple down through ExecReScan.
The previous method was hard to understand and could never be extended to
handle parameters coming from multiple join levels. This patch doesn't
change the set of possible plans nor have any significant performance effect,
but it's necessary infrastructure for future generalization of the concept
of an inner indexscan plan.
ExecReScan's second parameter is now unused, so it's removed.
Diffstat (limited to 'src/backend/executor/nodeHash.c')
| -rw-r--r-- | src/backend/executor/nodeHash.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/backend/executor/nodeHash.c b/src/backend/executor/nodeHash.c index be45d732e09..0fa8b33606a 100644 --- a/src/backend/executor/nodeHash.c +++ b/src/backend/executor/nodeHash.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/executor/nodeHash.c,v 1.129 2010/02/26 02:00:42 momjian Exp $ + * $PostgreSQL: pgsql/src/backend/executor/nodeHash.c,v 1.130 2010/07/12 17:01:05 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -961,14 +961,14 @@ ExecHashTableReset(HashJoinTable hashtable) } void -ExecReScanHash(HashState *node, ExprContext *exprCtxt) +ExecReScanHash(HashState *node) { /* * if chgParam of subnode is not null then plan will be re-scanned by * first ExecProcNode. */ - if (((PlanState *) node)->lefttree->chgParam == NULL) - ExecReScan(((PlanState *) node)->lefttree, exprCtxt); + if (node->ps.lefttree->chgParam == NULL) + ExecReScan(node->ps.lefttree); } |