PostgreSQL按年月日分组

标签：tab   pos   group   ...   post   rom   time   style   分组   

Select 

EXTRACT(year from cast(joindate as timestamp)) as Year,

EXTRACT(month from cast(joindate as timestamp)) as Month,

EXTRACT(day from cast(joindate as timestamp)) as Day,

......

From Table

Group by Year,Month,Day

PostgreSQL按年月日分组

标签：tab   pos   group   ...   post   rom   time   style   分组   

原文地址：http://www.cnblogs.com/Ryan2012/p/6641649.html