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diff --git a/contrib/pg_plan_advice/pgpa_walker.c b/contrib/pg_plan_advice/pgpa_walker.c
index 689f151e16290d5f14b350073406bddc5f047bc6..6bf8ae7bdf0b9095886e80ad7222ed7076067747 100644 (file)
--- a/contrib/pg_plan_advice/pgpa_walker.c
+++ b/contrib/pg_plan_advice/pgpa_walker.c
@@ -5,6 +5,9 @@
 
 #include "nodes/plannodes.h"
 
+/*
+ * Iterate over the entire plan tree.
+ */
 void
 pgpa_plan_walker(pgpa_plan_walker_context *context, Plan *plan,
                                 pgpa_join_unroller *join_unroller)