使用多個連接重複記錄

我寫過一個連接查詢語句。那條語句再次返回多個（重複）行，即使我只有一條記錄。使用多個連接重複記錄

declare @BenefitClass int ; 

set @BenefitClass = (select BenefitClass From HJOB where userid='d76c5000-69e0-461e-92e1-3cfe7590d098' and CompanyId =1629) 
select @BenefitClass; 
select 
bve.EmployerContribution, 
bhsac.CatchUpValue as CatchUpValue , 
bcl.Tier, 
bcl.planYear, 
bhsac.Ischecked, 
isnull(bhsac.Value,0) as EmployeeContribute, 
Id=(convert(varchar, bcl.Id) + '$' + convert(varchar, isnull(bhsac.Id, 0))) , 
bhsac.Value , 
bhsac.HSALmitId 
from  
dbo.benContributionStructure bcs 
inner join dbo.benVariableElection bve on bcs.PlanInfoId = bve.PlanInfoId 
inner join dbo.benBenefitContributionLimit bcl on bcs.SavingCategory =  bcl.CategoryID 
left outer join dbo.benBenefitHSACoverage bhsac on bcs.PlanInfoId = bhsac.planInfoId 
     and bcl.Id=bhsac.HSALmitId --and [email protected] 
     and bhsac.UserID='d76c5000-69e0-461e-92e1-3cfe7590d098' and bhsac.PlanInfoId=38044 
left outer join dbo.benEmployeeContribution bec on bhsac.UserID = bec.UserId and bhsac.BenefitClassId = bec.BenefitClassId -- and bec.EnrollmentType !='Closed' 
left outer join benOpenEnrollment oems on oems.ID = bec.OpenEnrollmentId and oems.EndDt > GETDATE()    
where  
bcs.PlanInfoId=38044 and bcl.Ischecked=1 
         and bcl.Tier !='CatchUp'  
    and bcl.CompanyId=1629

對於我得到的結果作爲第二排爲一式兩份：

observe the result

來源

2017-01-03 Srikanth Reddy

試試這一次它可能幫你

declare @BenefitClass int ; 

set @BenefitClass = (select BenefitClass From HJOB where userid='d76c5000-69e0-461e-92e1-3cfe7590d098' and CompanyId =1629) 
select @BenefitClass; 

;with cte as (
select 
bve.EmployerContribution, 
bhsac.CatchUpValue as CatchUpValue , 
bcl.Tier, 
bcl.planYear, 
bhsac.Ischecked, 
isnull(bhsac.Value,0) as EmployeeContribute, 
Id=(convert(varchar, bcl.Id) + '$' + convert(varchar, isnull(bhsac.Id, 0))) , 
bhsac.Value , 
bhsac.HSALmitId 
from  
dbo.benContributionStructure bcs 
inner join dbo.benVariableElection bve on bcs.PlanInfoId = bve.PlanInfoId 
inner join dbo.benBenefitContributionLimit bcl on bcs.SavingCategory =  bcl.CategoryID 
left outer join dbo.benBenefitHSACoverage bhsac on bcs.PlanInfoId = bhsac.planInfoId 
     and bcl.Id=bhsac.HSALmitId --and [email protected] 
     and bhsac.UserID='d76c5000-69e0-461e-92e1-3cfe7590d098' and bhsac.PlanInfoId=38044 
left outer join dbo.benEmployeeContribution bec on bhsac.UserID = bec.UserId and bhsac.BenefitClassId = bec.BenefitClassId -- and bec.EnrollmentType !='Closed' 
left outer join benOpenEnrollment oems on oems.ID = bec.OpenEnrollmentId and oems.EndDt > GETDATE()    
where  
bcs.PlanInfoId=38044 and bcl.Ischecked=1 
         and bcl.Tier !='CatchUp'  
    and bcl.CompanyId=1629 
    ) 
    select distinct EmployerContribution, 
CatchUpValue ,Tier,planYear,Ischecked,EmployeeContribute,Id ,Value ,HSALmitId from cte

來源

2017-01-03 05:33:16

我能知道你爲什麼和CTE一起去？ –

沒有什麼了不起的技巧..我只是使用** Distinct **來從CTE中獲取數據。 –

是的，我瞭解有關截然不同的東西，讓我確切地期望重現。但我對CTE感到困惑。我是初學者到SQL服務器。我沒有從CTE獲取相同的特徵。 –

請改變你的WHERE條件如下：

select 
bve.EmployerContribution, 
bhsac.CatchUpValue as CatchUpValue , 
bcl.Tier, 
bcl.planYear, 
bhsac.Ischecked, 
isnull(bhsac.Value,0) as EmployeeContribute, 
Id=(convert(varchar, bcl.Id) + '$' + convert(varchar, isnull(bhsac.Id, 0))) , 
bhsac.Value , 
bhsac.HSALmitId 
from  
dbo.benContributionStructure bcs 
inner join dbo.benVariableElection bve on bcs.PlanInfoId = bve.PlanInfoId 
inner join dbo.benBenefitContributionLimit bcl on bcs.SavingCategory =  bcl.CategoryID 
left outer join dbo.benBenefitHSACoverage bhsac on bcs.PlanInfoId = bhsac.planInfoId 
     and bcl.Id=bhsac.HSALmitId --and [email protected] 

left outer join dbo.benEmployeeContribution bec on bhsac.UserID = bec.UserId and bhsac.BenefitClassId = bec.BenefitClassId -- and bec.EnrollmentType !='Closed' 
left outer join benOpenEnrollment oems on oems.ID = bec.OpenEnrollmentId 
where  
bcs.PlanInfoId=38044 and bcl.Ischecked=1 
         and bcl.Tier !='CatchUp'  
    and bcl.CompanyId=1629 
    and bhsac.UserID='d76c5000-69e0-461e-92e1-3cfe7590d098' 
    and bhsac.PlanInfoId=38044 
    and oems.EndDt > GETDATE()

來源

2017-01-03 05:11:23

使用多個連接重複記錄

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