Where子句返回Count（）的所有行和非特定行（）

Question

我有一个select语句，它根据已经为“程序”，“观察”或者“包含在存储过程中的'条件'。我正在使用'程序'，'观察'和'条件'作为可选参数。 '程序'，'条件'和'观察'都存储在不同的表格中。目标是计算一段时间内具有“程序”，“观察”或“条件”的患者数量的“分子”值。

看起来如果同一个患者有多个'程序'，多个'观察'或多个'条件'，'计数'是派生所有这些，而不是针对特定的“分子”值存储过程。

Parameter declarations: 
@CareSite VARCHAR(1000),  /* where visit occurs */ 
@AgeStart VARCHAR(10),   /* starting age patient's age falls in */ 
@AgeEnd VARCHAR(10),   /* ending age patient's age falls in */ 
@Gender VARCHAR(10),   /* 'men' or 'women' 
@Procedure_Numerator VARCHAR(1000)=null, /* procedure the visit is for */ 
@Condition_Numerator VARCHAR(1000)=null, /* condition the visit is for */ 
@Observation_Numerator VARCHAR(1000)=null /* observation the visit is for */ 

SELECT statement: 

DECLARE @D1NumVal INT 
    SET @D1NumVal = (SELECT COUNT(*) AS Numerator 
         FROM SAS2SQL_DenominatorPersonTest DPT 
         JOIN SAS2SQL_DenominatorProcedureTest DPRT 
         ON DPRT.PersonID = DPT.PersonID 
         JOIN SAS2SQL_DenominatorConditionTest DCT 
         ON DCT.Person_ID = DPT.PersonID 
         JOIN SAS2SQL_DenominatorObservationsTest DOT 
         ON DOT.PersonID = DPT.PersonID 
         WHERE DPT.D1 = 1 
         AND DPT.Age >= @AgeStart AND DPT.Age <= @AgeEnd 
         AND (@Procedure_Numerator IS NOT NULL AND 
          DPT.CareSiteName = @CareSite AND DPT.Wave = 
          @Wave 
          AND DPT.Gender = @Gender AND 
          DPRT.ProcudureSourceValue = 
          @Procedure_Numerator) 
         OR (@Condition_Numerator IS NOT NULL AND 
          DPT.CareSiteName = @CareSite AND DPT.Wave =  
          @Wave 
         AND DPT.Gender = @Gender AND 
          DCT.X_Condition_Source_Desc = 
          @Condition_Numerator) 
          OR (@Observation_Numerator IS NOT NULL AND 
          DPT.CareSiteName = @CareSite AND DPT.Wave = 
          @Wave 
          AND DPT.Gender = @Gender AND 
          DOT.ObservationSourceValue = 
          @Observation_Numerator)) 

我使用“CASE何时”的做法，但试了一下我上面已经返回的结果更接近我试图生成。

Answer 1

您可能需要添加括号，因为AND在OR之前被评估，在第二个AND之后被评估并且是最后一个。

这似乎符合您的描述：

DECLARE @D1NumVal INT 
    SET @D1NumVal = (SELECT COUNT(*) AS Numerator 
         FROM SAS2SQL_DenominatorPersonTest DPT 
         JOIN SAS2SQL_DenominatorProcedureTest DPRT 
         ON DPRT.PersonID = DPT.PersonID 
         JOIN SAS2SQL_DenominatorConditionTest DCT 
         ON DCT.Person_ID = DPT.PersonID 
         JOIN SAS2SQL_DenominatorObservationsTest DOT 
         ON DOT.PersonID = DPT.PersonID 
         WHERE DPT.D1 = 1 
         AND DPT.Age >= @AgeStart AND DPT.Age <= @AgeEnd 
         AND((@Procedure_Numerator IS NOT NULL AND 
          DPT.CareSiteName = @CareSite AND DPT.Wave = 
          @Wave 
          AND DPT.Gender = @Gender AND 
          DPRT.ProcudureSourceValue = 
          @Procedure_Numerator) 
         OR (@Condition_Numerator IS NOT NULL AND 
          DPT.CareSiteName = @CareSite AND DPT.Wave =  
          @Wave 
         AND DPT.Gender = @Gender AND 
          DCT.X_Condition_Source_Desc = 
          @Condition_Numerator) 
          OR (@Observation_Numerator IS NOT NULL AND 
          DPT.CareSiteName = @CareSite AND DPT.Wave = 
          @Wave 
          AND DPT.Gender = @Gender AND 
          DOT.ObservationSourceValue = 
          @Observation_Numerator)))