FIX: fix sql syntax error; fixes #23

procedures/retrieveEntity.sql

@@ -77,7 +77,7 @@ retrieveEntityBody: BEGIN
 
             IF IVersion IS NULL THEN
                 -- RETURN EARLY - Version does not exist.
-                SELECT 0 WHERE 0 = 1;
+                SELECT 0 FROM entities WHERE 0 = 1;
                 LEAVE retrieveEntityBody;
             END IF;