SQL 2005 query error

• balasach82

  SSCrazy Eights

  Points: 9653

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  March 29, 2013 at 2:16 am

  #147746

  ColA -- nvarchar

  SELECT * from TABLENAME where isdate(ColA)=1 and (ColA)<>'' and DATEDIFF(year,cast(ColA as datetime), GETDATE()) = 1

  SELECT * from TABLENAME where isdate(ColA)=1 and (ColA)<>'' and CAST(ColA AS DATETIME) < DATEADD(yyyy, -1, GETDATE())

  Msg 8115, Level 16, State 2, Line 1

  Arithmetic overflow error converting expression to data type datetime.

  Any idea why i get this error?

  If new datetime col is added and values are inserted from ColA then the above queries runs.

• Sean Lange

  SSC Guru

  Points: 286590

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  March 29, 2013 at 8:06 am

  #1602033

  balasach82 (3/29/2013)

  ---

  ColA -- nvarchar

  SELECT * from TABLENAME where isdate(ColA)=1 and (ColA)<>'' and DATEDIFF(year,cast(ColA as datetime), GETDATE()) = 1

  SELECT * from TABLENAME where isdate(ColA)=1 and (ColA)<>'' and CAST(ColA AS DATETIME) < DATEADD(yyyy, -1, GETDATE())

  Msg 8115, Level 16, State 2, Line 1

  Arithmetic overflow error converting expression to data type datetime.

  Any idea why i get this error?

  If new datetime col is added and values are inserted from ColA then the above queries runs.

  Because you have some values that can't be cast as datetime. You probably need to do this in two passes. Create a cte then filter it.

  Something like this:

  ;with MyDates as

  (

  SELECT * from TABLENAME where isdate(ColA)=1

  )

  select * from MyDates

  where DATEDIFF(year,cast(ColA as datetime), GETDATE()) = 1

  Also there is no need for this: and (ColA) <> ''

  The IsDate function already removes that.

  select ISDATE('')

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