DELIMITER $$

BEGIN NOT ATOMIC

  DECLARE a DECIMAL(30,0) DEFAULT 9223372036854775808;

  EXECUTE IMMEDIATE 'EXPLAIN EXTENDED SELECT 1 LIMIT ?' USING a;

END;

$$

DELIMITER ;

SHOW WARNINGS;

+---------+------+----------------------------------------------------------------------------+

| Level   | Code | Message                                                                    |

+---------+------+----------------------------------------------------------------------------+

| Warning | 1916 | Got overflow when converting '9223372036854775808' to INT. Value truncated |

| Note    | 1003 | select 1 AS `1` limit 9223372036854775807                                  |

+---------+------+----------------------------------------------------------------------------+