1
SET SQL_MODE="TRADITIONAL,ANSI";
3
DROP TABLE IF EXISTS t7;
5
CREATE TABLE t7(c1 SET('a','abcdefghijabcdefghijabcdefghijabcdefghijabcdefghij') NULL);
6
INSERT INTO t7(c1) VALUES(NULL);
7
INSERT INTO t7(c1) VALUES('');
8
INSERT INTO t7(c1) VALUES('a');
9
INSERT INTO t7(c1) VALUES('abcdefghijabcdefghijabcdefghijabcdefghijabcdefghij');
11
INSERT INTO t7(c1) VALUES('abcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghij');
12
INSERT INTO t7(c1) VALUES('a,abcdefghijabcdefghijabcdefghijabcdefghijabcdefghij');
14
SELECT COUNT(c1) AS null_rows FROM t7 WHERE c1 IS NULL;