sql server query/subquery question

Posted by parminder on Stack Overflow See other posts from Stack Overflow or by parminder
Published on 2010-05-20T06:07:03Z Indexed on 2010/05/20 6:10 UTC
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sql

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sql-server

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ASP.NET

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mvc

Hi Experts, I have a tables with data like this

Id  BookId  TagId
34  113421  9
35  113421  10
36  113421  11
37  113421  1
38  113422  9
39  113422  1
40  113422  12

I need to write a query (SQL Server) which gives me data according to the tags say if I want bookIds where tagid =9 it should return bookid 113421 and 113422 as it exists in both the books, but If I ask data for tags 9 and 10 it should return only book 113421 as that is the only book where both the tags are present.

Thanks

Parminder

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