SQL,CASE WHEN 分类之后,如果将分类的信息合并计算

 

 

 

 

 

 

 

 

select subcompanyid1,count(id) as 总数,
CASE field20 When '非生产性' THEN '非生产性'  ELSE '生产性' END
from v_zsrlzyxx  
group by  subcompanyid1, field20
order by subcompanyid1 asc    

利用分组函数,group by

select subcompanyid1,count(id) as 总数,
CASE field20 When '非生产性' THEN '非生产性'  ELSE '生产性' END
from v_zsrlzyxx  
group by  subcompanyid1, field20
order by subcompanyid1 asc

改为

select subcompanyid1,field20,sum(id) as 总数,
CASE field20 When '非生产性' THEN '非生产性'  ELSE '生产性' END
from v_zsrlzyxx  
group by  subcompanyid1, field20
order by subcompanyid1 asc    

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