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76f45be931
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