题解 | #插入记录（三）#

# 这个表有主键，可以用replace into
# replace into examination_info (id, exam_id,tag, difficulty, duration, release_time)
# values (NULL, 9003, 'SQL', 'hard', 90, '2021-01-01 00:00:00 ')


delete from examination_info
where exam_id = '9003';
insert into examination_info (id, exam_id,tag, difficulty, duration, release_time)
values (NULL, 9003, 'SQL', 'hard', 90, '2021-01-01 00:00:00 ');