ERROR 1820 (HY000): You must SET PASSWORD before executing this statement

从MySql5.6.6起可以强制用户修改密码。

Session1:先使密码过期

mysql>ALTER USER 'test'@'127.0.0.1' PASSWORD EXPIRE;

Session2:可以继续操作，这个操作不会影响已建立的连接

mysql> select 1 \G

*************************** 1. row ***************************

1: 1

1 row in set (0.01 sec)

Session3:会影响新的连接

mysql -utest -p

Enter password: ******

mysql> show variables like'port'\G;

ERROR 1820 (HY000): You must SET PASSWORD before executing this statement

当出现ERROR 1820 (HY000)这个错误后，用SET PASSWORD 修改当前用户的密码就可以了。

mysql> SET PASSWORD = PASSWORD('123456');

Query OK, 0 rows affected (0.04 sec)

mysql> select 1 \G

*************************** 1. row ***************************

1: 1

1 row in set (0.01 sec)