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Set ecxt_scantuple correctly for tuple routing.

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In 2ac3ef7a01, we changed things so that
it's possible for a different TupleTableSlot to be used for partitioned
tables at successively lower levels.  If we do end up changing the slot
from the original, we must update ecxt_scantuple to point to the new one
for partition key of the tuple to be computed correctly.

Reported by Rajkumar Raghuwanshi.  Patch by Amit Langote.

Discussion: http://postgr.es/m/CAKcux6%3Dm1qyqB2k6cjniuMMrYXb75O-MB4qGQMu8zg-iGGLjDw%40mail.gmail.com
This commit is contained in:
Robert Haas
2017-01-24 15:34:39 -05:00
parent 27cdb3414b
commit 132488bfee
4 changed files with 26 additions and 12 deletions
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2
src/backend/executor/execMain.c
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@ -3192,9 +3192,7 @@ ExecFindPartition(ResultRelInfo *resultRelInfo, PartitionDispatch *pd,
{
int result;
Oid failed_at;
ExprContext *econtext = GetPerTupleExprContext(estate);
econtext->ecxt_scantuple = slot;
result = get_partition_for_tuple(pd, slot, estate, &failed_at);
if (result < 0)
{