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Delete Duplicated Rows in one query, simple and easy
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Email
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| Submitted on: |
4/4/2005 6:02:54 PM |
| By: |
mid.net
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| Level: |
Intermediate |
| User Rating: |
By 5 Users |
| Compatibility: |
SQL Server 2000, SQL Server 7.0, SQL Server 6.5 and earlier, Other |
| Views: |
12563 |
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(About the author) |
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Delete duplicated Rows width have an Identity (unique) Column
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Table Original
| Id |
Descript |
| 1 |
aa |
| 2 |
aa |
| 3 |
bb |
| 4 |
cc |
| 5 |
dd |
| 6 |
dd |
| 7 |
ee |
I want to delete all Duplicated by 'Descrip'
Delete from mitable where id Not In
(Select top 1 id from mitable as MR1 where
MR1.descrip=mitable.descrip)
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Id |
Descript |
| 1 |
aa |
| 3 |
bb |
| 4 |
cc |
| 5 |
dd |
| 7 |
ee |
All Dupplicated Data Removed enjoy that
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Other 1 submission(s) by this author
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Your Vote
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Other User Comments
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 4/5/2005 4:30:10 AM: dsoftnet
How you will be identifying which row wil get deleted, assum you have one table containing name as
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4/5/2005 7:27:57 AM: mid.net
the "delete" query remove all duplicated item without any other information than the table which contains the duplicated rows, try the query and you see which I tell you
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7/4/2005 5:15:57 AM:
it is very good
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1/30/2007 12:40:01 AM: kaja
display the first 5 maximum salary for each department
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