为什么datepart提取小时数不起作用？

Question

大家好，datepart在case when没有工作。我想这...
这工作：

select status_name ,count(pk_lead_id) as leads where lm.lead_created_date between @sDate and @eDate and datepart(hh,lead_created_date) in (9,10,11,12,13,14,15,16,17,18,19) and datepart(hh,lead_created_date) in (20,21,22,23,0,1,2,3,4,5,6,7,8) from lead_master group by status_name

但是，这并没有给正确的输出：

select status_name ,count(pk_lead_id) as leads --'9am to 8pm' and '8pm to 9am' ,count(case when cast(right(left(lead_created_date,13),2) as int) in (9,10,11,12,13,14,15,16,17,18,19)then 1 else 0 end)as morning ,count(case when cast(right(left(lead_created_date,13),2) as int) in (20,21,22,23,0,1,2,3,4,5,6,7,8)then 1 else 0 end)as night from lead_master group by status_name

我需要查询哪里datepart条件在case when ...

Answer 1

为什么你在日期时间栏上应用RIGHT和LEFT？

case when cast(right(left(lead_created_date,13),2) as int) in (9,10,11,12,13,14,15,16,17,18,19)then 1 else 0 end 

更改您的查询：

select status_name 
     ,count(pk_lead_id) as leads --'9am to 8pm' and '8pm to 9am' 
     ,sum(case when datepart(hh,lead_created_date) in (9,10,11,12,13,14,15,16,17,18,19) then 1 else 0 end)as morning 
     ,sum(case when datepart(hh,lead_created_date) in (20,21,22,23,0,1,2,3,4,5,6,7,8) then 1 else 0 end)as night 
from lead_master group by status_name