mysql> select * from tr; +------+ | mnt | +------+ | jun | | mar | | jan | | aug | +------+ 4 rows in set (0.00 sec) mysql> select * from tr1; +------+------+ | mnt | id | +------+------+ | aug | 11 | | jan | 12 | | mar | 15 | | apr | 16 | +------+------+ 4 rows in set (0.00 sec) it worked for this query.. mysql> select * from tr join tr1 on tr.mnt=tr1.mnt; +------+------+------+ | mnt | mnt | id | +------+------+------+ | aug | aug | 11 | | jan | jan | 12 | | mar | mar | 15 | +------+------+------+ 3 rows in set (0.00 sec) mysql> select * from tr2; +------------+------+ | mn | id | +------------+------+ | 2009-02-14 | 11 | | 2009-03-03 | 12 | | 2009-08-08 | 12 | +------------+------+ 3 rows in set (0.00 sec) mysql> insert into tr2 values('2009-01-01',14); Query OK, 1 row affected (0.06 sec)
,但它不是在爲這個..將varchar轉換與一個月爲日期
mysql> select * from tr join tr2 on tr.mnt=MONTHNAME(tr2.mn); Empty set (0.00 sec)
請給出確切的查詢..
這個週末,你應該讓你的小雞們用他們的Shift鍵,我的朋友花費一些高質量的時間。 – 2011-06-10 04:26:50