我不是那么高级的 sql 用户。您能否查看我的以下查询是否最佳?或者我可以做一些更优化和更具可读性的事情?
select Distinct DT.Station , DT.Slot , DT.SubSlot, DT.CompID , CL.CompName
from (
select Station, Slot, SubSlot, CompID
from DeTrace
where DeviceID = '1151579773'
) as DT
Left outer CList as CL
on DT.CompID = CL.CompID
where CL.CompName = '9234220'
order by CompName
感谢帮助。