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Enforce child constraints during COPY TO a partitioned table.

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The previous coding inadvertently checked the constraints for the
partitioned table rather than the target partition, which could
lead to data in a partition that fails to satisfy some constraint
on that partition.  This problem seems to date back to when
table partitioning was introduced; prior to that, there was only
one target table for a COPY, so the problem didn't occur, and the
code just didn't get updated.

Etsuro Fujita, reviewed by Amit Langote and Ashutosh Bapat

Discussion: https://postgr.es/message-id/5ABA4074.1090500%40lab.ntt.co.jp
This commit is contained in:
Robert Haas 2018-04-06 11:42:28 -04:00
parent 870d89608e
commit cfbecf8100
1 changed files with 2 additions and 1 deletions
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3
src/backend/commands/copy.c
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@ -2709,7 +2709,8 @@ CopyFrom(CopyState cstate)
check_partition_constr = false;
/* Check the constraints of the tuple */
if (cstate->rel->rd_att->constr || check_partition_constr)
if (resultRelInfo->ri_RelationDesc->rd_att->constr ||
check_partition_constr)
ExecConstraints(resultRelInfo, slot, estate, true);
if (useHeapMultiInsert)