Mysql出現(xiàn)?ERROR?1396?(HY000)?報(bào)錯(cuò)該如何解決

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建立用戶的時(shí)候報(bào)告這個(gè)錯(cuò)誤：

ERROR 1396 (HY000): Operation CREATE USER failed for 'abc'@'localhost'

原因是mysql中已經(jīng)有了這個(gè)用戶，從mysql.user中直接刪除delete，然后刷新權(quán)限FLUSH PRIVILEGES，再建用戶就不會(huì)有這個(gè)問(wèn)題了。

如果是drop user 的話，mysql內(nèi)部會(huì)自動(dòng)刷新一下，那么再建也不會(huì)有這問(wèn)題了。

舉例說(shuō)明1——delete刪除：

mysql> create user 'abc'@'localhost';

Query OK, 0 rows affected (0.00 sec)

mysql> select user,host from user;

+------+-----------+

| user | host |

+------+-----------+

| root | 127.0.0.1 |

| abc | localhost |

| root | localhost |

+------+-----------+

3 rows in set (0.00 sec)

mysql> delete from user where user='abc';

Query OK, 1 row affected (0.00 sec)

mysql> select user,host from user;

+------+-----------+

| user | host |

+------+-----------+

| root | 127.0.0.1 |

| root | localhost |

+------+-----------+

2 rows in set (0.00 sec)

再次創(chuàng)建同名用戶，報(bào)錯(cuò)如下：

mysql> create user 'abc'@'localhost';

ERROR 1396 (HY000): Operation CREATE USER failed for 'abc'@'localhost'

這里要刷新權(quán)限，刷新之后就可以創(chuàng)建了；

mysql> flush privileges;

Query OK, 0 rows affected (0.00 sec)

mysql> create user 'abc'@'localhost';

Query OK, 0 rows affected (0.00 sec)

mysql> select user,host from user;

+------+-----------+

| user | host |

+------+-----------+

| root | 127.0.0.1 |

| abc | localhost |

| root | localhost |

+------+-----------+

3 rows in set (0.00 sec)

舉例說(shuō)明2——drop 刪除，可以直接創(chuàng)建：

mysql> drop user 'abc'@'localhost';

Query OK, 0 rows affected (0.00 sec)

mysql> select user,host from user;

+------+-----------+

| user | host |

+------+-----------+

| root | 127.0.0.1 |

| root | localhost |

+------+-----------+

2 rows in set (0.00 sec)

mysql> create user 'abc'@'loaclhost';

Query OK, 0 rows affected (0.00 sec)

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