--- trunk/pgest.c	2005/05/20 19:44:09	5
+++ trunk/pgest.c	2005/05/20 22:01:19	7
@@ -191,10 +191,10 @@
 			est_doc_delete(doc);
 		} else {
 			elog(INFO, "no result from estraier");
-			values[0] = NULL;
-			values[1] = NULL;
-			values[2] = NULL;
-			values[3] = NULL;
+			values[0] = DatumGetCString( "" );
+			values[1] = DatumGetCString( "" );
+			values[2] = DatumGetCString( "" );
+			values[3] = DatumGetCString( "" );
 		}