这个思路的sql如何写
- SQL code
select ( select COUNT(*) from tmp where tmp.f1=v1), ( select COUNT(*) from tmp where tmp.f2=v2), ( select COUNT(*) from tmp where tmp.f3=v3), ... from (select * from table1 where f0 =...) as tmp
???
[解决办法]
select case when tmp.f1=v1 then .....else 0 end as ...,
case when 实现
[解决办法]
select
sum(case when f0 = ... and f1 = 'v1' then 1 else 0 end) ,
sum(case when f0 = ... and f2 = 'v2' then 1 else 0 end) ,
sum(case when f0 = ... and f3 = 'v3' then 1 else 0 end) ,
...
from table1