SQL2K8R2 Computed Column formula error

• nfs_john

  Ten Centuries

  Points: 1275

  More actions

  March 29, 2013 at 5:51 pm

  #275923

  Hello,

  I was going to create a computed column based of course upon the values in three other columns. Of the four (the fourth being the computed column) involved 3 are defined as time(7). The fourth is tinyint. The formula is quite simple. (A*B)+C = Answer.

  So

  ColumnA time(7)

  ColumnB tinyint

  ColumnC time(7)

  ColumnAnswer time(7)

  My formula is like this:

  (([ColumnA] * [ColumnB]) + [ColumnC])

  The error...time is incompatible with tinyint.

  So am I going to have to move this to a udf and even then not sure what I would CAST / CONVERT to accomplish the multiplication??

  Pointers would be greatly appreciated

  JB

  So to add to this I have written the following in SSMS:

  DECLARE @a time(0)

  DECLARE @b-2 tinyint

  DECLARE @C time(0)

  SET @a = 0:1:30'

  --Well this won't do because I need everything in seconds to do the math sooo...

  DECLARE @Aseconds int

  SET @Aseconds = (DATEPART(HOUR, @a) * 3600) + (DATEPART(MINUTE, @a) * 60) + (DATEPART(SECOND, @a))

  SELECT @Aseconds * @b-2

  --then convert it back to time to add @C

  SELECT CONVERT(varchar, DATEADD(ms, @Aseconds * 1000, 0), 114)

  --Now dateadd each part really?? should I do this in .NET instead?

• mister.magoo

  SSC-Forever

  Points: 47068

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  March 29, 2013 at 6:06 pm

  #1602213

  Give us a clue what you are trying to achieve, because multiplying a time doesn't make sense.

  MM
  

  ---

  
  select geometry::STGeomFromWKB(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