701
700
score INT NOT NULL DEFAULT 0,
705
insert into t1 (cip, time) VALUES (1, '00:01'), (2, '00:02'), (3,'00:03');
706
insert into t1 (cip, bob, time) VALUES (4, 'a', '00:04'), (5, 'b', '00:05'),
705
insert into t1 (cip, bob) VALUES (4, 'a' ), (5, 'b'),
708
707
select * from t1 where bob is null and cip=1;
710
709
select * from t1 where bob is null and cip=1;