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do not include duplicate

Posted on 2011-09-19
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Last Modified: 2012-05-12
use same table structure as related question

want all the columns for duplicate "dept_name"
   in the dept table.  do not include original row,  Only  include the duplicate row.
  the original row is the row that is entered first.
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Question by:rgb192
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2 Comments
 
LVL 60

Accepted Solution

by:
Kevin Cross earned 500 total points
ID: 36563781
If you want to use the dept_id that is the lowest as the original row, you can consider ROW_NUMBER() windowing function in SQL 2005.

SELECT {columns you want in final select}
FROM (
SELECT *, ROW_NUMBER() OVER(PARTITION BY dept_name ORDER BY dept_id) RN
FROM dept
) derived
WHERE RN > 1
;

You will get the duplicate rows. The original row is RN = 1, so those will be excluded.

Good luck!
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Author Closing Comment

by:rgb192
ID: 36564733
thanks
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