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POSQL code inside SQL Scalar-value function - want to generalize - optimize
 

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  1. POSQL code inside SQL Scalar-value function - want to generalize - optimize
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    <p>I got this code, I would like to optimize. I basically can add new columns to "Disp" table later on, and I don't want to come back modify this function. I cannot use dynamic SQL. Right? Is there anything else that would work in my case?</p> <p>This is the function:</p> <pre><code>ALTER FUNCTION [GetDate] (@hdrnumber INT, @DateColName VARCHAR(50)) RETURNS DATETIME AS BEGIN DECLARE @dt DATETIME SELECT @dt = CASE WHEN @DateColName = 'ord_bookdate' THEN [ord_bookdate] WHEN @DateColName = 'ord_startdate' THEN [ord_startdate] WHEN @DateColName = 'ord_completiondate' THEN [ord_completiondate] WHEN @DateColName = 'pack_date_from' THEN [pack_date_from] WHEN @DateColName = 'pack_date_to' THEN [pack_date_to] END FROM [Disp] WHERE [hdrnumber] = @hdrnumber RETURN @dt END </code></pre> <p>(removed some of the code, because it's a long one, but hopefully what I left in here will make sense to you guys)</p> <p>how do i use this function? well it basically looks like this:</p> <pre><code> insert into tablename (...) select somedate, [GetDate](somedate, somecolumn) from sometable where 1 = 1 </code></pre>
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    1. USskaffman
    1. USAsh
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    1. COSlightly off-topic, but I would recommend a different name for the function so as to remove any possible confusion with the built in GETDATE() function
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      1. USAdaTheDev
    2. COyeah, i know :)
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      1. USAsh
 

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