From e19489144cd43884cfb733f7ec7acc37e335c931 Mon Sep 17 00:00:00 2001
From: Gonzalo Riestra <gonzalor@cartodb.com>
Date: Wed, 13 Mar 2019 09:08:13 +0100
Subject: [PATCH] simplify queries

---
 scripts-available/CDB_GhostTables.sql | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/scripts-available/CDB_GhostTables.sql b/scripts-available/CDB_GhostTables.sql
index c948b24..91468f1 100644
--- a/scripts-available/CDB_GhostTables.sql
+++ b/scripts-available/CDB_GhostTables.sql
@@ -68,8 +68,7 @@ AS $$
   DECLARE
     ddl_tag TEXT;
   BEGIN
-    EXECUTE 'SELECT tag FROM cartodb.cdb_ddl_execution WHERE txid = txid_current();' INTO ddl_tag;
-    DELETE FROM cartodb.cdb_ddl_execution WHERE txid = txid_current();
+    EXECUTE 'DELETE FROM cartodb.cdb_ddl_execution WHERE txid = txid_current() RETURNING tag;' INTO ddl_tag;
     PERFORM cartodb.CDB_LinkGhostTables(ddl_tag);
     RETURN NULL;
   END;