Mysql刷題筆記 12.18 查詢與之前(昨天的)日期相比溫度更高的所有日期的 Id
阿新 • • 發佈:2020-12-18
Mysql練習
T1218 +------+------------+------+ | ID | REDATE | TEMP | +------+------------+------+ | 1 | 2020-01-01 | 10 | | 2 | 2020-01-02 | 18 | | 3 | 2020-01-03 | 15 | | 4 | 2020-01-04 | 20 | +------+------------+------+ 結果: +------+ | ID | +------+ | 2 | | 4 | +------+ -- 重點是DATE_ADD()和INTERVAL 1 DAY select b.ID from T1218 a inner join T1218 b on DATE_ADD(a.REDATE,INTERVAL 1 day) = b.REDATE and a.TEMP < b.TEMP