mysql 通过Excel导入导出数据时,有可能会添加上不需要的空格，回车字符。

UPDATE user SET user_name = TRIM(user_name);

UPDATE user SET user_name = REPLACE(REPLACE(user_name,CHAR(10),‘‘), CHAR(13),‘‘);

UPDATE user SET user_name = REPLACE(user_name, ‘\n‘,‘‘);

UPDATE user SET user_name = REPLACE(user_name, ‘\r\n‘,‘‘);

mysql - 去除空格回车符