ASP and ADO Gotcha - Duplicate Field Names in a Query

  • Leon Platt

    SSCommitted

    Points: 1921

    Comments posted to this topic are about the content posted at http://www.sqlservercentral.com/columnists/lplatt/aspandadogotchaduplicatefieldnamesinaquery.asp

  • mmaslanik

    Grasshopper

    Points: 11

    That's wonderful, but what is the solution?

  • GRN

    Hall of Fame

    Points: 3210

    use a alias i suppose !!

  • robiwon

    Grasshopper

    Points: 15

    Is this article for real? You must be very new to ADO programming to just be hitting this.

  • Leon Platt

    SSCommitted

    Points: 1921

    quote:


    Is this article for real? You must be very new to ADO programming to just be hitting this.


    That would be an incorrect assumption but thanks for the feedback anyway. The thing is, I probably never would have run across this if it wasn't for the cut and paste programming I happend to be doing at the time. Typically I would have written the sql statement by hand in which case I would have aliased the fields accordingly. Yes GRN - you are correct

    quote:


    use a alias i suppose !!


    Although there are several solutions to this problem the best is to alias the rating as "Article Rating" and "Book Rating", thus no ambiguity. The purpose of this Tip was not to uncover some deep dark secret of ADO but rather to give other programmers something to think about when creating sql statements that return record sets in ADO.

  • Andy Warren

    SSC Guru

    Points: 119655

    I agree with Leon that this isn't so much about ADO as it is best practices. If you're aliasing your tables and cols correctly, you'll never see this. Just out of curiousity, can anyone tell me if this is a bug or a feature of ADO?

    Andy

  • BobAtDBS

    SSCarpal Tunnel

    Points: 4333

    Once the Join is done, there are no P. and A. qualifiers anymore. You simply have to alias the fieldnames to something meaningful. I suppose it's considered a 'feature' since many times the identically named fields would have identical data (but then why return both?).


    Student of SQL and Golf, Master of Neither

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