1
2
3
4
5
6
7
8
9
10
11
12
13
14
|
--disable_warnings
DROP TABLE IF EXISTS t7;
--enable_warnings
CREATE TABLE t7(c1 SET('a','abcdefghijabcdefghijabcdefghijabcdefghijabcdefghij') NULL);
INSERT INTO t7(c1) VALUES(NULL);
INSERT INTO t7(c1) VALUES('');
INSERT INTO t7(c1) VALUES('a');
INSERT INTO t7(c1) VALUES('abcdefghijabcdefghijabcdefghijabcdefghijabcdefghij');
INSERT INTO t7(c1) VALUES('abcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghijabcdefghij');
INSERT INTO t7(c1) VALUES('a,abcdefghijabcdefghijabcdefghijabcdefghijabcdefghij');
SELECT * FROM t7;
SELECT COUNT(c1) AS null_rows FROM t7 WHERE c1 IS NULL;
DROP TABLE t7;
|
