这个思路的sql怎么写
这个思路的sql如何写SQL codeselect( select COUNT(*) from tmpwhere tmp.f1v1),( select COUNT(*) from
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