Horton

Fix replica identity check for MERGE.

Dean Rasheed <dean.a.rasheed@gmail.com>

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Commit: 311340f17863b0f87b3af32649ee5a2a58988b08
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Date: 2025-09-04T10:47:15Z
Releases: 18.0 
Fix replica identity check for MERGE.

When executing a MERGE, check that the target relation supports all
actions mentioned in the MERGE command. Specifically, check that it
has a REPLICA IDENTITY if it publishes updates or deletes and the
MERGE command contains update or delete actions. Failing to do this
can silently break replication.

Author: Zhijie Hou <houzj.fnst@fujitsu.com>
Reviewed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com>
Reviewed-by: Dean Rasheed <dean.a.rasheed@gmail.com>
Tested-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://postgr.es/m/OS3PR01MB57180C87E43A679A730482DF94B62@OS3PR01MB5718.jpnprd01.prod.outlook.com
Backpatch-through: 15

Files

PathChange+/−
src/backend/executor/execMain.c modified +10 −1
src/test/regress/expected/publication.out modified +28 −0
src/test/regress/sql/publication.sql modified +31 −0

Discussion