Home Forums SQL Server 2008 T-SQL (SS2K8) How to update the same column multiple times in an UPDATE statement? RE: How to update the same column multiple times in an UPDATE statement?

  • Tom Bakerman (1/23/2014)


    Thanks guys. Cross Apply did the trick. I seem to have a block on that; it just never occurs to me to use Cross Apply.

    Cheers,

    Tom

    You might want to test the case where you have a 2 for 3 split. I didn't check it myself, but if it causes you a problem you may need to modify the CA to SUM the LOG of the ratio (instead of each of the parts), and then in the outer query multiply the price by the EXP of the summed logarithmic ratio.


    My mantra: No loops! No CURSORs! No RBAR! Hoo-uh![/I]

    My thought question: Have you ever been told that your query runs too fast?

    My advice:
    INDEXing a poor-performing query is like putting sugar on cat food. Yeah, it probably tastes better but are you sure you want to eat it?
    The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.

    Need to UNPIVOT? Why not CROSS APPLY VALUES instead?[/url]
    Since random numbers are too important to be left to chance, let's generate some![/url]
    Learn to understand recursive CTEs by example.[/url]
    [url url=http://www.sqlservercentral.com/articles/St