Cannot check vales returned from a function in a CASE statement

• kunal.bhattacharya.01

  SSC Rookie

  Points: 40

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  July 30, 2008 at 7:34 am

  #188818

  quite a simple query i just want to check the scores before inserting them

  INSERT INTO Tablex(a,b,c,d,ScoreA,ScoreB )

  SELECTDISTINCT a,b,c,d,

  (CASE WHEN ((A.CompType='C' AND A.CustomerNA ='Y')) THEN (SELECT ScoreA FROM GetScoreA(A.a,A.b,A.c,A.ProductId,A.d))

  WHEN ((A.CompType='B' AND A.BusinessNA ='Y'))

  THEN (SELECT ScoreA FROM GetScoreA(A.a,A.b,A.c,A.ProductId,A.d))

  ELSE (SELECT ScoreA FROM GetScoreA(A.a,A.b,A.c,A.ProductId,A.d))

  END),

  (CASE WHEN ((A.CompType='C' AND A.CustomerNA ='Y')) THEN (SELECT ScoreB FROM GetScoreB(A.a,A.b,A.c,A.ProductId,A.d))

  WHEN ((A.CompType='B' AND A.BusinessNA ='Y')) THEN (SELECT ScoreB FROMGetScoreB(A.a,A.b,A.c,A.ProductId,A.d))

  ELSE (SELECT ScoreB FROM GetScoreB(A.a,A.b,A.c,A.ProductId,A.d))

  END)

  FROM A

  WHERE ScoreA = A.PointsAvailable --These statements

  AND ScoreB = A.PointsReceived --are giving an error

• ChrisM@Work

  SSC Guru

  Points: 186127

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  July 30, 2008 at 8:18 am

  #850537

  ScoreA and ScoreB don't exist for the WHERE to use yet.

  INSERT INTO Tablex (a,b,c,d,ScoreA,ScoreB)

  SELECT a,b,c,d,ScoreA,ScoreB

  FROM (

  SELECT DISTINCT a,b,c,d,

  ScoreA = (CASE WHEN ((A.CompType='C' AND A.CustomerNA ='Y')) THEN (SELECT ScoreA FROM GetScoreA(A.a,A.b,A.c,A.ProductId,A.d))

  WHEN ((A.CompType='B' AND A.BusinessNA ='Y')) THEN (SELECT ScoreA FROM GetScoreA(A.a,A.b,A.c,A.ProductId,A.d))

  ELSE (SELECT ScoreA FROM GetScoreA(A.a,A.b,A.c,A.ProductId,A.d))

  END),

  ScoreB = (CASE WHEN ((A.CompType='C' AND A.CustomerNA ='Y')) THEN (SELECT ScoreB FROM GetScoreB(A.a,A.b,A.c,A.ProductId,A.d))

  WHEN ((A.CompType='B' AND A.BusinessNA ='Y')) THEN (SELECT ScoreB FROM GetScoreB(A.a,A.b,A.c,A.ProductId,A.d))

  ELSE (SELECT ScoreB FROM GetScoreB(A.a,A.b,A.c,A.ProductId,A.d))

  END),

  A.PointsAvailable, A.PointsReceived

  FROM A

  ) d

  WHERE d.ScoreA = d.PointsAvailable --These statements

  AND d.ScoreB = d.PointsReceived --are giving an error

  ^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

  For fast, accurate and documented assistance in answering your questions, please read this article.
  Understanding and using APPLY, (I) and (II) Paul White
  Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden

• kunal.bhattacharya.01

  SSC Rookie

  Points: 40

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  July 30, 2008 at 11:56 pm

  #850996

  Thanks for pointing out the mistake

• ChrisM@Work

  SSC Guru

  Points: 186127

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  August 1, 2008 at 3:02 am

  #851702

  You're welcome, and thanks for the feedback.

  ^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

  For fast, accurate and documented assistance in answering your questions, please read this article.
  Understanding and using APPLY, (I) and (II) Paul White
  Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden