TSQL Statement Help Please

• AarionSSQL

  Mr or Mrs. 500

  Points: 594

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  November 8, 2014 at 1:46 pm

  #292366

  Hi I have an update statement which performs UPDATES to column when the WHERE condone = 'Yes' ..

  UPDATE dbo.Table1

  SET colA = (SELECT col1 FROM Table2 WHERE col10 = 'A')

  ,SET colB = (SELECT col1 FROM Table2 WHERE col10 = 'A')

  WHERE colC = 'Yes'

  However, should the WHERE be equal to anything else apart from 'Yes' I would want the two columns to be SET to NULL.

  I you could please help me out with the syntax.

  Thank you

• Gail Shaw

  SSC Guru

  Points: 1004504

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  November 8, 2014 at 10:29 pm

  #1757327

  UPDATE dbo.Table1

  SET colA = CASE ColC WHEN 'Yes' THEN (SELECT col1 FROM Table2 WHERE col10 = 'A') ELSE NULL END

  ,SET colB = CASE ColC WHEN 'Yes' THEN (SELECT col1 FROM Table2 WHERE col10 = 'A') ELSE NULL END

  Gail Shaw
  Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
  SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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