[1009]mysql中Cast()函数的用法

2021-06-29 10:39:48 浏览数 (1)

Cast(字段名 as 转换的类型 ),其中类型可以为:

CHAR[(N)] 字符型 DATE 日期型 DATETIME 日期和时间型 DECIMAL float型 SIGNED int TIME 时间型

例如表table1

代码语言:javascript复制
date
2015-11-03 15:31:26
代码语言:javascript复制
select cast(date as signed) as date from  table1;

结果如下:
date
20151103153126

select cast(date as char) as date from  table1;

结果如下:
date
2015-11-03 15:31:26

select cast(date as datetime) as date from  table1;

结果如下:
date
2015-11-03 15:31:26

select cast(date as date) as date from  table1;

结果如下:
date
2015-11-03

select cast(date as time) as date from  table1;

结果如下:
date
15:31:26 

这里date对应日期,time对应时间

来源:https://blog.csdn.net/m0_37450089/article/details/80750994

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