Question

MYSQL中同一句SQL语句为什么第一次执行失败，第二次执行才成功？

-> select * from user where username='bbb' and password='222';
1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'select * from user where username='bbb' and password='222'' at line 3
mysql> select * from user where username='bbb' and password='222';
+----+----------+----------+--------+
| id | username | password | name |
+----+----------+----------+--------+
| 2 | bbb | 222 | zhouyu |
+----+----------+----------+--------+
1 row in set

Answer 1

你的第一个执行时，是在mysql>的提示符下面吗？

你可以退出，再进来一次试一下，还会不会第一次不成功。

感觉你第一次执行时，前面有个语句没有执行。