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ssowmya
New User
Joined: 10 Oct 2006
Posts: 40
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Hi
Could any of u pls tell me how to extract only duplicate rows from table? |
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guptae
Moderator
Joined: 14 Oct 2005
Posts: 1208
Location: Bangalore,India
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HI There,
| Code: |
SELECT C1, COUNT(*)
GROUP BY C1
HAVING COUNT(*)>1
WITH UR; |
Here C1 is the coloum which u r taking to identify duplicate.
Correction r welcome |
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MFRASHEED
Active User
Joined: 14 Jun 2005
Posts: 186
Location: USA
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If you want get result using SQL, then try using GROUP BY and HAVING clause:
Example:
| Code: |
SELECT <COLUMN_NAME> , COUNT(*) FROM TABLE.NAME
GROUP BY <COLUMN_NAME>
HAVING COUNT(*) > 1
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Result will give how count of how many duplicates also.
One more way is to download table and use SORT to get duplicate rows. |
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