阿里云-maxcompute---sql语法

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

date

2015-11-03 15:31:26

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

阿里云-maxcompute---sql语法

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