hive sql 對一天的數據按5分鍾進行分段

背景：離線的數據中有時間戳，要求按五分鍾規划為一組00：00 - 23：55

 

 

 1.cast(date_format(t1.order_end_time,'HH') as string)把小時拿出來

 2.(floor(date_format(t1.order_end_time,'mm')/5 )*5) as string 把分鍾數除5，24/5=4.8。再向下取整=4。再乘5=20。

 3.case when判斷如果結果是0就得00，5就得05

 4.最后concat_ws拼接小時和分鍾

 

concat_ws(':',cast(date_format(t1.order_end_time,'HH') as string)
,case when cast((floor(date_format(t1.order_end_time,'mm')/5 )*5) as string) = '0' then '00'
when cast((floor(date_format(t1.order_end_time,'mm')/5 )*5) as string) = '5' then '05'
else cast((floor(date_format(t1.order_end_time,'mm')/5 )*5) as string) end) as '分鍾段'