Fix bogus comment.

Commit 4212cb73262bbdd164727beffa4c4744b4ead92d rendered a comment
in execMain.c incorrect.  Per complaint from Tom Lane, repair.

Patch from Amit Kapila, per wording suggested by Tom Lane and me.

diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c
index 0f47c7e01041da11021a170c1dd6ae30765b32e5..d43a204808078e2efa035c6be7080692b26fec8f 100644 (file)
--- a/src/backend/executor/execMain.c
+++ b/src/backend/executor/execMain.c
@@ -1550,9 +1550,10 @@ ExecutePlan(EState *estate,
        estate->es_direction = direction;
 
        /*
-        * If a tuple count was supplied or data is being written to relation, we
-        * must force the plan to run without parallelism, because we might exit
-        * early.
+        * If a tuple count was supplied, we must force the plan to run without
+        * parallelism, because we might exit early.  Also disable parallelism
+        * when writing into a relation, because no database changes are allowed
+        * in parallel mode.
         */
        if (numberTuples || dest->mydest == DestIntoRel)
                use_parallel_mode = false;