MySQL表、欄位、庫的字符集修改方法介紹

修改資料庫字符集：

ALTER DATABASE db_name DEFAULT CHARACTER SET character_name [COLLATE ...];   
把表預設的字符集和所有字元列（CHAR,VARCHAR,TEXT）改為新的字符集：

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

只是修改表的預設字符集：

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


修改欄位的字符集：

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; 


檢視資料庫編碼：
SHOW CREATE DATABASE db_name; 
  
檢視錶編碼：
SHOW CREATE TABLE tbl_name;   

檢視欄位編碼：
SHOW FULL COLUMNS FROM tbl_name;