调整MySQL数据表字符集
数据表t1表的结构.mysql> show create table t1\G
*************************** 1. row ***************************
Table: t1
Create Table: CREATE TABLE `t1` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`account` varchar(30) NOT NULL DEFAULT '',
PRIMARY KEY (`id`),
UNIQUE KEY `uniq_account` (`account`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8
1 row in set (0.00 sec)
1. 调整默认charset为utf8mb4.
mysql>> Query OK, 0 rows affected (0.07 sec)
Records: 0Duplicates: 0Warnings: 0
mysql> show create table t1\G
*************************** 1. row ***************************
Table: t1
Create Table: CREATE TABLE `t1` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`account` varchar(30) CHARACTER SET utf8 NOT NULL DEFAULT '',
PRIMARY KEY (`id`),
UNIQUE KEY `uniq_account` (`account`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8mb4
1 row in set (0.00 sec)
2. 调整account字段collate为utf8mb4_bin.
mysql>> Query OK, 0 rows affected (0.71 sec)
Records: 0Duplicates: 0Warnings: 0
mysql> show create table t1\G
*************************** 1. row ***************************
Table: t1
Create Table: CREATE TABLE `t1` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`account` varchar(30) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL DEFAULT '',
PRIMARY KEY (`id`),
UNIQUE KEY `uniq_account` (`account`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8mb4
1 row in set (0.00 sec)
3. 调整默认charset, 和各字段charset为utf8.
mysql>> Query OK, 0 rows affected (1.65 sec)
Records: 0Duplicates: 0Warnings: 0
mysql> show create table t1\G
*************************** 1. row ***************************
Table: t1
Create Table: CREATE TABLE `t1` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`account` varchar(30) NOT NULL DEFAULT '',
PRIMARY KEY (`id`),
UNIQUE KEY `uniq_account` (`account`)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8
1 row in set (0.00 sec)
页:
[1]