Implementation of keyword ignore: using hint string

src/gausskernel/runtime/executor/execQual.cpp

@@ -2389,6 +2389,10 @@ static Datum ExecMakeFunctionResultNoSets(
         fcinfo->context = (Node *)node;
     }
 
+    if (econtext) {
+        fcinfo->can_ignore = econtext->can_ignore;
+    }
+
     /*
      * Incause of connet_by_root() and sys_connect_by_path() we need get the
      * current scan tuple slot so attach the econtext here