Home Forums SQL Server 2012 SQL Server 2012 - T-SQL how to update column city value from 'A' to 'B' and 'B' to 'A' in single query RE: how to update column city value from 'A' to 'B' and 'B' to 'A' in single query

  • T.Ashish (9/29/2013)


    I have faced the same situation in an interview where interviewer asked me a question on triggers.

    I tried my hard to convince him that we have INSTEAD OF and AFTER triggers in MS sql-server, and he was stuck to his point that we also have a BEFORE trigger in MS sql-server.

    In cases like that, after you've made your initial point that you don't think they exist, it is probably best to stick with something non-committal like:

    "I'd be fascinated to learn about BEFORE triggers from you some time, but for now I can't comment further because I have no experience with them."

    One of the guys on this forum has a saying in his signature link that goes something like:

    "Never argue with an idiot. They'll drag you down to their level and they've got a lot more experience operating there."


    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