Question

我需要向表中插入唯一的行，但是当我的Select使用2列的子查询时，我不知道如何使用不存在的地方。有没有办法做到这一点？

BTW：我确实对表有约束，并且无法插入重复项，但希望避免重复键错误。

我尝试了这种格式，但由于子查询，无法绑定列。

INSERT dbo.DataValue(DateStamp, ItemId, Value)
SELECT DateStamp, ItemId, Value 
FROM dbo.tmp_holding_DataValue AS t
WHERE NOT EXISTS (SELECT 1 FROM dbo.DataValue AS d
WHERE DateStamp = t.DateStamp
AND ItemId = t.ItemId);

我的查询：

insert into App.DimRequirementComponentDetail_TST 
(RequirementComponentSID, RequirementComponentDimensionSID, RequirementComponentDimensionValueSID,RequirementComponentDimensionValueText, Sta3n, ActiveFlag)  

select (select RequirementComponentSID from App.DimRequirementComponent  where name = @Measure ),   --   'PTSD PSY11' 
(select RequirementComponentDimensionSID from App.DimRequirementComponentDimension  where Name='ICD10 Diagnosis') , 
t1.ICD10SID,cast(t1.ICD10Code as varchar(max)),t1.Sta3n,'Y'--,t1.ICD10Description 
from app.DimICD10 t1 
where ICD10Code = @ICD10Code   --'F32.5'

Answer 1

我错过了什么或为什么你不能这样做？

INSERT INTO dbo.DataValue(DateStamp, ItemId, Value)
SELECT t.DateStamp, t.ItemId, t.Value 
FROM dbo.tmp_holding_DataValue AS t
WHERE NOT EXISTS (SELECT 1 FROM dbo.DataValue AS d
                  WHERE d.DateStamp = t.DateStamp
                  AND d.ItemId = t.ItemId);

Answer 2

我解决了这个问题。经过多次搜索后发现我的问题是引用了一个刚刚在where子句中选择的列。解决方案是将整个查询放在子查询中，然后引用。

Select * From
(
        select (select RequirementComponentSID from App.DimRequirementComponent  where name = @Measure) as RequirementComponentSID,  
        (select RequirementComponentDimensionSID from App.DimRequirementComponentDimension  where Name='ICD10 Diagnosis') as RequirementComponentDimensionSID , 
        ICD10SID ,cast(ICD10Code as varchar(max)) as ICD10Code,Sta3n,'Y' as ActiveFlag
        from D01_VISN05.app.DimICD10  where ICD10Code = @ICD10Code
) RES

        Where not exists( select 1 from App.DimRequirementComponentDetail_TST  as d 
        join D01_VISN05.app.DimICD10 K on K.ICD10SID = RES.ICD10SID
        where RES.RequirementComponentSID = d.RequirementComponentSID 
        and RES.RequirementComponentDimensionSID = d.RequirementComponentDimensionSID 
        and RES.sta3n = d.sta3n 
        and RES.ICD10SID= K.ICD10SID 
        and RES.ICD10Code= K.ICD10Code 
        and RES.ActiveFlag = D.ActiveFlag
);

不存在时插入行，select语句使用子查询

2 个答案: