replace into 表中已有则替换,没有则插入
replace into examination_info (exam_id,tag,difficulty,duration,release_time)
values (9003, "SQL", "hard", 90, "2021-01-01 00:00:00");
replace into 表中已有则替换,没有则插入
replace into examination_info (exam_id,tag,difficulty,duration,release_time)
values (9003, "SQL", "hard", 90, "2021-01-01 00:00:00");