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Complex SQL query. Please solve.

Posted By:      Posted Date: December 04, 2010    Points: 0   Category :Sql Server
i have a table named -> tbl_name

id | name | id_name 
1    a      1---->See id column
2    b      1
3    c      1
4    d      2
5    ef     3
6    de    6

now i want result like this[Acording to there id's related to id_name]

id  name  id_name 
--  ----  -------
1    a      a  ->id is 1 and id_name is 1 so result is a
2    b      a  ->id is 1 and id_name is 1 so result is a    >View Actual data
3    c      a  ->id is 1 and id_name is 1 so result is a    >in upper table   
4    d      b  ->id is 2 and id_name is 2 so result is b
5    ef     c  ->   ""
6    de    de

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