修改使用者許可權，重新整理許可權表，報1146

mysql> flush privileges;

ERROR 1146 (42S02): Table 'mysql.servers' doesn't exist

mysql> use mysql;

mysql> show tables;可以看到servers表，在系統mysql 目錄下，可以看到server.ibd 和server.frm,可知表定義為innodb表。

mysql> drop table if exists servers;
Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql> show warnings;
+---------+------+-------------------------------------+
| Level | Code | Message |
+---------+------+-------------------------------------+
| Warning | 1146 | Table 
 
'mysql.servers' doesn't exist |
+---------+------+-------------------------------------+
1 row in set (0.00 sec)

mysql>CREATE TABLE `servers` (
`Server_name` char(64) NOT NULL DEFAULT '',
`Host` char(64) NOT NULL DEFAULT '',
`Db` char(64) NOT NULL DEFAULT '',
`Username` char(64) NOT NULL DEFAULT ''
 
,
`Password` char(64) NOT NULL DEFAULT '',
`Port` int(4) NOT NULL DEFAULT '0',
`Socket` char(64) NOT NULL DEFAULT '',
`Wrapper` char(64) NOT NULL DEFAULT '',
`Owner` char(64) NOT NULL DEFAULT '',
PRIMARY KEY (`Server_name`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 STATS_PERSISTENT=0 COMMENT='MySQL Foreign Servers table
 
'

ERROR 1146 (42S02): Table 'mysql.servers' doesn't exist

mysql> CREATE TABLE `servers` (

-> `Server_name` char(64) NOT NULL,
-> `Host` char(64) NOT NULL,
-> `Db` char(64) NOT NULL,
-> `Username` char(64) NOT NULL,
-> `Password` char(64) NOT NULL,
-> `Port` int(4) DEFAULT NULL,
-> `Socket` char(64) DEFAULT NULL,
-> `Wrapper` char(64) NOT NULL,
-> `Owner` char(64) NOT NULL,
-> PRIMARY KEY (`Server_name`)
-> ) ENGINE=MyISAM DEFAULT CHARSET=utf8;

Query OK, 0 rows affected(0.01 sec)

可以建立，資料庫開啟這張表的預設引擎為MyISAM，但是這張表在建表時的引擎為INNODB；