在一个查询 SQL SERVER 中应用多个“Where”子句答案

【问题标题】：Apply multiple "Where" clauses in one Query SQL SERVER在一个查询 SQL SERVER 中应用多个“Where”子句
【发布时间】：2023-03-13 16:07:01
【问题描述】：

我想要

我有这个问题：

select 

SUM(fact.cheques) as TotalChequeAmount,
SUM(fact.revenusIntermediationToDate + fact.cheques ) as YTD ,
SUM(fact.revenusIntermediationToDate + fact.cheques ) as YTDN1,
SUM(revenusIntermediationToDate) as TotalRevenuIntermediationToDate,

acc.beCompanyCode as Codecompany,
acc.Country as Pays,
acc.Name as Name,
acc.AccountTypeSec as AccountType,
acc.Segmentation as Segmentation,
acc.City as City,
acc.OfficialGroup as OfficialGroup , 
acc.ActualYearBudget as Budget2016,
acc.SegmentationResSec as SegmentSecurities

from dbo.Fact_Profit_And_Loss fact
left outer join dbo.Dim_Accounts acc  on ( acc.Accounts_TechKey = fact.FK_Account)
left outer join dbo.DimTemps time1 on (time1.Temps_PK = fact.FK_Time)
where YEAR(time1.Date) = 2016
group by acc.beCompanyCode, acc.Country , acc.Name , acc.AccountTypeSec , acc.Segmentation ,
acc.City , acc.OfficialGroup , acc.ActualYearBudget, acc.SegmentationResSec

问题是我想为 YTD 列应用过滤器 Year = 2016 YTDN1 列的另一个过滤器 Year = 2015。

是否有可能在一个 Sql 查询中为两列定义两个 where 子句？

TotalChequeAmount   YTD         YTDN1               Codecompany
0.00                6541.2826   6541.2826           2513
0.00                0.00        0.00                2541
0.00                7350.9433   7350.9433           2547

【问题讨论】：

标签： sql sql-server database where-clause

【解决方案1】：

使用条件聚合：

select SUM(fact.cheques) as TotalChequeAmount,
       SUM(CASE 
              WHEN YEAR(time1.Date) = 2016 
                 THEN fact.revenusIntermediationToDate + fact.cheques 
              ELSE 0 
           END) as YTD ,
       SUM(CASE 
              WHEN YEAR(time1.Date) = 2015 
                 THEN fact.revenusIntermediationToDate + fact.cheques 
              ELSE 0 
           END) as YTDN1,
       SUM(revenusIntermediationToDate) as TotalRevenuIntermediationToDate,    
       acc.beCompanyCode as Codecompany,
       acc.Country as Pays,
       acc.Name as Name,
       acc.AccountTypeSec as AccountType,
       acc.Segmentation as Segmentation,
       acc.City as City,
       acc.OfficialGroup as OfficialGroup , 
       acc.ActualYearBudget as Budget2016,
       acc.SegmentationResSec as SegmentSecurities    
from dbo.Fact_Profit_And_Loss fact
left outer join dbo.Dim_Accounts acc  
   on ( acc.Accounts_TechKey = fact.FK_Account)
left outer join dbo.DimTemps time1 on (time1.Temps_PK = fact.FK_Time)
where YEAR(time1.Date) IN (2015, 2016)
group by acc.beCompanyCode, acc.Country , 
         acc.Name , acc.AccountTypeSec , 
         acc.Segmentation , acc.City , 
         acc.OfficialGroup , acc.ActualYearBudget, 
         acc.SegmentationResSec

上述查询的YTD字段返回2016年的结果，而YTDN1字段返回2015年的结果。SUM的其他字段返回这两年的总和。

【讨论】：