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Asked: 2026-05-11T02:52:13+00:00

I have a basic property bag table that stores attributes about my primary table

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I have a basic ‘property bag’ table that stores attributes about my primary table ‘Card.’ So when I want to start doing some advanced searching for cards, I can do something like this:

SELECT dbo.Card.Id, dbo.Card.Name   FROM dbo.Card          INNER JOIN dbo.CardProperty ON dbo.CardProperty.IdCrd = dbo.Card.Id  WHERE dbo.CardProperty.IdPrp = 3 AND dbo.CardProperty.Value = 'Fiend' INTERSECT   SELECT dbo.Card.Id, dbo.Card.Name   FROM dbo.Card          INNER JOIN dbo.CardProperty ON dbo.CardProperty.IdCrd = dbo.Card.Id  WHERE (dbo.CardProperty.IdPrp = 10 AND (dbo.CardProperty.Value = 'Wind' OR dbo.CardProperty.Value = 'Fire'))

What I need to do is to extract this idea into some kind of stored procedure, so that ideally I can pass in a list of property/value combinations and get the results of the search.

Initially this is going to be a ‘strict’ search meaning that the results must match all elements in the query, but I’d also like to have a ‘loose’ query so that it would match any of the results in the query.

I can’t quite seem to wrap my head around this one. My previous version of this was to do generate some massive SQL query to execute with a lot of AND/OR clauses in it, but I’m hoping to do something a little more elegant this time. How do I go about doing this?

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1 Answer

  1. it seems to me that you have an EAV model here. if you’re using sql server 2005 and up i’d suggest you use XML datatype for this:

    http://weblogs.sqlteam.com/mladenp/archive/2006/10/14/14032.aspx

    makes searching and stuff much easier with built in xml querying capabilities.

    if you can’t change your model then look at this:

    http://weblogs.sqlteam.com/davidm/articles/12117.aspx

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