This comment was copy-pasted from nodeAppend.c to nodeMergeAppend.c, but
while committing
5220bb7533, I modified wrong copy of it.
Spotted by David Rowley
/*
* The case where no subplans survive pruning must be handled
* specially. The problem here is that code in explain.c requires
- * a MergeAppend to have at least one subplan in order for it to
+ * an Append to have at least one subplan in order for it to
* properly determine the Vars in that subplan's targetlist. We
* sidestep this issue by just initializing the first subplan and
* setting as_whichplan to NO_MATCHING_SUBPLANS to indicate that
/*
* The case where no subplans survive pruning must be handled
* specially. The problem here is that code in explain.c requires
- * an Append to have at least one subplan in order for it to
+ * a MergeAppend to have at least one subplan in order for it to
* properly determine the Vars in that subplan's targetlist. We
* sidestep this issue by just initializing the first subplan and
* setting ms_noopscan to true to indicate that we don't really