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How to subtract time

  • May 13, 2019 at 6:11 pm

    #3641634

    Hi,

     

    I have a field that is a Time(4) datatype.

    I need to make a computed field in the table that checks if you subtract 52 secs. from the Time field is 0 then 0 else the time field value.

    So I have :

    alter table [DMPCRU].[dbo].[VaspianCalls] add [Hold_Time] as (iif(DATEADD(ss,-52,Duration)<0,0,Duration))

    But this doe not work:

    Comes back with

    Operand type clash: time is incompatible with tinyint

    Any ideas of what I can do?

     

    Thank you

     

     

  • May 13, 2019 at 6:20 pm

    #3641635

    If I understand the desired logic correctly, then this:

    alter table [DMPCRU].[dbo].[VaspianCalls] add [Hold_Time] as (iif(Duration < '00:52', '00:00', Duration))

    SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".

  • May 13, 2019 at 6:22 pm

    #3641636

    That did it.

    Thanks, I really appreciate your help.

    Thank you

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