hive case when then 多條件


 

hive中的case when,有多個條件時,可以這樣寫:

select substr(key,13,2),
case when birthday<'1968' then '50up'
when birthday<'1978' then '40-50'
when birthday<'1983' then '35-40'
when birthday<'1988' then '30-35'
when birthday<'1992' then '26-30'
when birthday<'1998' then '20-25'
else 'other' end,
count(1)
from hiveTable
group by substr(key,13,2),
case when birthday<'1968' then '50up'
when birthday<'1978' then '40-50'
when birthday<'1983' then '35-40'
when birthday<'1988' then '30-35'
when birthday<'1992' then '26-30'
when birthday<'1998' then '20-25'
else 'other' end

 


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