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Mysql修改字符集

  

mysql修改表、字段、库的字符集(转)

原文链接:http://fatkun.com/2011/05/mysql-alter-charset.html

MySQL中默认字符集的设置有四级:服务器级,数据库级,表级 。最终是字段级 的字符集设置。注意前三种均为默认设置,并不代码你的字段最终会使用这个字符集设置。所以我们建议要用show create table table ; 或show full fields from tableName; 来检查当前表中字段的字符集设置。

 

修改数据库字符集:

 ALTER DATABASE db_name DEFAULT CHARACTER SET character_name [COLLATE ...];

 

把表默认的字符集和所有字符列(CHAR,VARCHAR,TEXT)改为新的字符集:

 

ALTER TABLE tbl_name CONVERT TO CHARACTER SET character_name [COLLATE ...]
如:ALTER TABLE logtest CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;
 

只是修改的默认字符集:

ALTER TABLE tbl_name DEFAULT CHARACTER SET character_name [COLLATE...];
如:ALTER TABLE logtest DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
 

修改字段的字符集:

ALTER TABLE tbl_name CHANGE c_name c_name CHARACTER SET character_name [COLLATE ...];
如:ALTER TABLE logtest CHANGE title title VARCHAR(100) CHARACTER SET utf8 COLLATE utf8_general_ci;

查看数据库编码:

SHOW CREATE DATABASE db_name

查看表编码:

SHOW CREATE TABLE tbl_name;

 

查看字段编码:

 SHOW FULL COLUMNS FROM tbl_name;

 

 

posted @ 2018-12-20 17:22  萌哥-爱学习  阅读(456)  评论(0编辑  收藏  举报