数据库--查询--按小时查询&在where里面使用sum函数&同时显示多个查询条件下的数据

查询:将数据库-表中-若干日期-按一天24小时,将所有日期同一时间的数据求和。

学习点:将数据按小时分组求和

1 declare @BgainTime varchar(50)='2017-11-01'  
2 declare @EndTime varchar(50)  ='2017-12-01'
3 --每小时发药处方量
4 select '时间'=datepart(hh,ReceiveTime),'发药量'=count(*) from Prescription 
5 where ReceiveTime between  @BgainTime and @EndTime
6 group by datepart(hh,ReceiveTime)
7 order by datepart(hh,ReceiveTime)

如果想在where条件使用sum函数,通过having来实现:

select  PrescCode from PrescriptionDetail group by PrescCode having sum(OutQuantity)>=sum(Quantity)

 存在要将不同查询条件下的多个数据同时显示,使用相关子查询,下面代码做参考:

--总处理处方数量  总发药盒数  总补药盒数
select '总处理处方数量'=count(*) ,
'总发药盒数'=(select sum(OutQuantity/ConversionRate) from PrescriptionDetail  
inner join DrugInfo on DrugInfo.DrugCode=PrescriptionDetail.DrugCode
inner join Prescription on Prescription.PrescCode=PrescriptionDetail.PrescCode
where ReceiveTime between @BgainTime and @EndTime),
'总补药盒数'=(select sum(Quantity) from ReplenishAuditInfo  
where OperateTime between @BgainTime and @EndTime )
from Prescription where ReceiveTime between @BgainTime and @EndTime

备注:此查询语句将三种不同查询条件下的数据同时显示,可以来自不同表

 

posted @ 2017-12-11 15:18  EasonDongH  阅读(1147)  评论(0编辑  收藏  举报