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-rw-r--r--src/backend/executor/execReplication.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/backend/executor/execReplication.c b/src/backend/executor/execReplication.c
index 9dd71684615..af093428813 100644
--- a/src/backend/executor/execReplication.c
+++ b/src/backend/executor/execReplication.c
@@ -47,9 +47,9 @@ static bool tuples_equal(TupleTableSlot *slot1, TupleTableSlot *slot2,
*
* Returns how many columns to use for the index scan.
*
- * This is not generic routine, it expects the idxrel to be a btree, non-partial
- * and have at least one column reference (i.e. cannot consist of only
- * expressions).
+ * This is not generic routine, idxrel must be PK, RI, or an index that can be
+ * used for REPLICA IDENTITY FULL table. See FindUsableIndexForReplicaIdentityFull()
+ * for details.
*
* By definition, replication identity of a rel meets all limitations associated
* with that. Note that any other index could also meet these limitations.