diff options
Diffstat (limited to 'src/backend/executor/nodeHashjoin.c')
| -rw-r--r-- | src/backend/executor/nodeHashjoin.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/src/backend/executor/nodeHashjoin.c b/src/backend/executor/nodeHashjoin.c index 7363ab2a2cd..a21184a3a80 100644 --- a/src/backend/executor/nodeHashjoin.c +++ b/src/backend/executor/nodeHashjoin.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $PostgreSQL: pgsql/src/backend/executor/nodeHashjoin.c,v 1.79 2005/11/28 23:46:03 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/executor/nodeHashjoin.c,v 1.80 2006/02/28 04:10:27 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -335,7 +335,7 @@ ExecHashJoin(HashJoinState *node) * ---------------------------------------------------------------- */ HashJoinState * -ExecInitHashJoin(HashJoin *node, EState *estate) +ExecInitHashJoin(HashJoin *node, EState *estate, int eflags) { HashJoinState *hjstate; Plan *outerNode; @@ -345,6 +345,9 @@ ExecInitHashJoin(HashJoin *node, EState *estate) List *hoperators; ListCell *l; + /* check for unsupported flags */ + Assert(!(eflags & (EXEC_FLAG_BACKWARD | EXEC_FLAG_MARK))); + /* * create state structure */ @@ -378,12 +381,16 @@ ExecInitHashJoin(HashJoin *node, EState *estate) /* * initialize child nodes + * + * Note: we could suppress the REWIND flag for the inner input, which + * would amount to betting that the hash will be a single batch. Not + * clear if this would be a win or not. */ outerNode = outerPlan(node); hashNode = (Hash *) innerPlan(node); - outerPlanState(hjstate) = ExecInitNode(outerNode, estate); - innerPlanState(hjstate) = ExecInitNode((Plan *) hashNode, estate); + outerPlanState(hjstate) = ExecInitNode(outerNode, estate, eflags); + innerPlanState(hjstate) = ExecInitNode((Plan *) hashNode, estate, eflags); #define HASHJOIN_NSLOTS 3 |