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Leon

Member since Dec 11, 2008

Recent Blog Comments By Leon

  • SQL COALESCE() Very Cool, But Slower Than ISNULL()

    Posted on Sep 29, 2006 at 2:37 PM

    COALESCE is actually very useful in certain situations. For example, if you had a table with two quantity columns and you wanted to sum the difference between them, you would do, select sum(coalesce(quanitty1, 0) - coalesce(quantity2, 0)) as difference If you didn't use coalesce, then the sum wil... read more »

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