BEGIN;
NOTICE:  DB node id: 0 statement: BEGIN;
NOTICE:  DB node id: 1 statement: BEGIN;
SELECT 1;
NOTICE:  DB node id: 0 statement: SELECT 1;
 ?column? 
----------
        1
(1 row)

END;
NOTICE:  DB node id: 1 statement: END;
NOTICE:  DB node id: 0 statement: END;
