添加/删除MySQL数据库表中的字段
添加字段的格式
ALTER [ONLINE | OFFLINE] [IGNORE] TABLE tbl_name alter_specification [, alter_specification] ...alter_specification: table_option ... | ADD [COLUMN] col_name column_definition [FIRST | AFTER col_name ]
eg.
ALTER TABLE myTbl ADD COLUMN newItem VARCHAR(20) DEFAULT "0" AFTER oldItem;
删除字段的格式
ALTER [ONLINE | OFFLINE] [IGNORE] TABLE tbl_name alter_specification [, alter_specification] ...alter_specification: table_option ... | DROP [COLUMN] col_name
eg.
ALTER TABLE myTbl DROP COLUMN uselessItem;
相关文档：
搞了很久。。终于发现原来是权限问题。。
2行命令搞定
grant all privileges on rogue.* to admin@localhost identified by 'admin' with grant option
grant all privileges on rogue.* to admin@'%' identified by 'admin' with grant option
经典了。。。
魔力私服网页端搞定咯~~ ......
# MySQL-Front 5.1 (Build 4.2)
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE */;
/*!40101 SET SQL_MODE='STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES */;
/*!40103 SET SQL_NOTES='ON' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS */ ......
管理节点:192.168.50.211 数据节点: 192.168.50.214 数据节点: 192.168.50.215 SQL节点: 192.168.50.212 SQL节点: 192.168.50.213 操作系统:Red Hat Enterprise Linux AS release 5 ------------------------------------------安装前必读---------------------------------------- 当前文档的版本为mysql-cluster- ......
注: 从MySQL从服务器的版本不能小于主服务器的版本 实验环境 Master Mysql服务器版本5.1.36,IP:192.168.128.130 Slave Mysql服务器版本5.1.36,IP:192.168.128.132 一. MySQL主服务器配置 1.建立授权用户 用法:grant replication slave on *.* to ‘用户名’@'主机’ identified by ‘密码’; mysql>grant replicatio ......
