Can't open and lock privilege tables: Table 'mysql.servers' doesn't exist

��L�� — Sat, 17 May 2008 12:52:00 GMT

今天重装了系�l�，事�g查看器里老是出现MySQL的错误提�C�：
Can't open and lock privilege tables: Table 'mysql.servers' doesn't exist
For more information, see Help and Support Center at http://www.mysql.com.

以前一直没有出现过�c�M��的问题，�|�上查了大半天，说有两个�Ҏ��Q?br />
�W�一�U�方法：
�q�入Mysql的bin目录�q�行 mysql -uroot -p密码
mysql> SOURCE ../share/mysql_fix_privilege_tables.sql

�W�二�U�方法：

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 COMMENT=’MySQL Foreign Servers table�?

两种�Ҏ��都尝试过了，�q�是不行�Q�没办法�Q�卸掉，重启�Q�再安装�Q�问题依�?br />
重新配置一�ơ，仔细��查每个步骤，才发现原来问题出现在配置的时候，在配�|�过�E�中选勾�?br />Enable root Access from remote machines
问题解决�?br />

��L�� 2008-05-17 20:52 发表评论

存储�q�程中执行动态SQL

��L�� — Fri, 16 May 2008 05:22:00 GMT

在MySQL中执行动态拼接的SQL语句�Q�有炚w��烦，以下是一个简单的例子�Q�经�q�测试没有问题�?/p>

mysql > delimiter //
mysql >  create procedure sp_tests(out itotal int, in scondition varchar(50))
    ->   begin
    ->     if scondition = '' then
    ->         set @sql = 'select count(*) into @total from users';
    ->     else
    ->         set @sql = concat('select count(*) into @total from users where ',scondition);
    ->     end if;
    ->
    ->     prepare s1 from @sql;
    ->     execute s1;
    ->     set itotal = @total;
    ->  end //

mysql> delimiter ;
mysql> call sp_tests(@itotal,'userid=1');
mysql> select @itotal;

��L�� 2008-05-16 13:22 发表评论

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Can't open and lock privilege tables: Table 'mysql.servers' doesn't exist

存储�q�程中执行动态SQL