sql - Delete one row from same rows -

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I have a table t (first, second) column. I have two lines before = 1 and second = 2. I just want to delete one line, how do I do this? 

 ; With CTE (remove your tablet from Top 1 * where first = 1 and second = 2) with CTE;   
 Or if SQL Server 2000  
  Remove T (Select Top 1 * from your tablet where [first] = 1 and [seconds] = 2) ;   
 Then add a primary key.

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