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-rw-r--r--src/backend/executor/execMain.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/src/backend/executor/execMain.c b/src/backend/executor/execMain.c
index 23a6a612565..e39911f16b2 100644
--- a/src/backend/executor/execMain.c
+++ b/src/backend/executor/execMain.c
@@ -228,7 +228,9 @@ standard_ExecutorStart(QueryDesc *queryDesc, int eflags)
* we retrieve up to 'count' tuples in the specified direction.
*
* Note: count = 0 is interpreted as no portal limit, i.e., run to
- * completion.
+ * completion. Also note that the count limit is only applied to
+ * retrieved tuples, not for instance to those inserted/updated/deleted
+ * by a ModifyTable plan node.
*
* There is no return value, but output tuples (if any) are sent to
* the destination receiver specified in the QueryDesc; and the number
@@ -1358,7 +1360,7 @@ ExecEndPlan(PlanState *planstate, EState *estate)
/* ----------------------------------------------------------------
* ExecutePlan
*
- * Processes the query plan until we have processed 'numberTuples' tuples,
+ * Processes the query plan until we have retrieved 'numberTuples' tuples,
* moving in the specified direction.
*
* Runs to completion if numberTuples is 0