mysql - 如何在mySQL的select语句中将数字转换为字符串

Question

当您在 MySQL 中发出 SELECT 语句时，是否可以将数字和日期转换为字符串？像这样的东西：

SELECT str(a.Amount) as AMT, str(a.date) as Date FROM LALAZUK as a...

Answer 1

你需要的是CAST：

SELECT CAST(a.Amount AS CHAR CHARACTER SET utf8) as AMT, SELECT CAST(a.date AS CHAR CHARACTER SET utf8) as Date FROM LALAZUK as a...

http://dev.mysql.com/doc/refman/5.0/en/charset-convert.html