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Fix MERGE tuple count with DO NOTHING

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Reporting tuples for which nothing is done is useless and goes against
the documented behavior, so don't do it.

Backpatch to 15.

Reported by: Luca Ferrari
Discussion: https://postgr.es/m/CAKoxK+42MmACUh6s8XzASQKizbzrtOGA6G1UjzCP75NcXHsiNw@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2022-11-17 18:56:11 +01:00
parent 813492dacc
commit 6ff5aa1299
1 changed files with 1 additions and 1 deletions
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2
src/backend/executor/nodeModifyTable.c
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@ -2799,7 +2799,7 @@ lmerge_matched:
{
case TM_Ok:
/* all good; perform final actions */
if (canSetTag)
if (canSetTag && commandType != CMD_NOTHING)
(estate->es_processed)++;
break;