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User-defined function slows down the view - Microsoft SQL / MS SQL Server

Sounds like my solution should work. Did you try it? CREATE VIEW vuBack AS SELECT X.*, COALESCE(S.game, J.game, P.game) AS game FROM BACK AS X LEFT JOIN SMI.dbo.SMI_MKTNG AS S ON X.form = S.formno AND X.class ='SMI' LEFT JOIN dts_Imports.dbo.JARARRW AS J ON X.form = J.formno AND X.class ='JRT' LEFT JOIN dts_Imports.dbo.POP_MKTNG AS P ON X.form = P.formno AND X.class ='POP' -- David Portas ------------ Please reply only to the newsgroup --...

  1. #1

    Default Re: User-defined function slows down the view

    Sounds like my solution should work. Did you try it?

    CREATE VIEW vuBack
    AS
    SELECT X.*,
    COALESCE(S.game, J.game, P.game) AS game
    FROM BACK AS X
    LEFT JOIN SMI.dbo.SMI_MKTNG AS S
    ON X.form = S.formno AND X.class ='SMI'
    LEFT JOIN dts_Imports.dbo.JARARRW AS J
    ON X.form = J.formno AND X.class ='JRT'
    LEFT JOIN dts_Imports.dbo.POP_MKTNG AS P
    ON X.form = P.formno AND X.class ='POP'

    --
    David Portas
    ------------
    Please reply only to the newsgroup
    --


    David Guest

  2. #2

    Default Re: User-defined function slows down the view

    Thank you very much, David. This should work. I'll try this on Monday at
    work.

    Peter

    "David Portas" <org> wrote in message
    news:ebY2$phx.gbl... 


    Peter Guest

  3. #3

    Default Re: User-defined function slows down the view

    David,

    I tried your view (as well as my version with UNION query), and it worked.
    However, in both cases it is even slower than with UDF. I guess that's
    because all my tables are quite big, I should find a different way of
    getting data.

    Thank you,

    Peter

    "David Portas" <org> wrote in message
    news:ebY2$phx.gbl... 


    Peter Guest

  4. #4

    Default Re: User-defined function slows down the view

    or create some indexes. You said Formno was unique in each table. Do you
    have a unique index on it? Is Form indexed in the BACK table?

    --
    David Portas
    ------------
    Please reply only to the newsgroup
    --


    David Guest

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