When executing the following SQL, "ERROR 2013 (HY000): Lost connection to server during query" will happen.

DROP TABLE t1 ;
DROP TABLE t2 ;
CREATE TABLE t1 ( c1 INT , c2 VARBINARY ( 100 ) ) ;
INSERT INTO t1 VALUES ( null NULL , NULL null ) ;
INSERT INTO t1 VALUES ( 66 , 'x' ) ;
INSERT INTO t1 VALUES ( 85 , 'x' ) ;
INSERT INTO t1 VALUES ( 127 , 'x' ) ;
CREATE TABLE v0 ( v1 CHARACTER ) ;
INSERT INTO v0 VALUES ( null NULL ) ;
INSERT INTO v0 VALUES ( -128 ) ;
INSERT INTO v0 VALUES ( 16 ) ;
SELECT v1 FROM v0 WHERE ( SELECT v1 UNION SELECT 1 UNION SELECT 1 ) IN ( SELECT * FROM v0 WHERE ( 1 ) GROUP BY v1 HAVING v1 = v1 * 1 ) GROUP BY v1 , v1 HAVING v1 / v1 / v1 ;
SELECT v1 FROM v0 WHERE v1 NOT IN ( SELECT v1 FROM v0 ) ;
DROP TABLE v0 ;
DROP TABLE v0 ;