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I need to delete duplicated companies

Posted on 2013-01-14
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Last Modified: 2013-01-14
Hello,

During many imports my customer imported  the same companies many times.

e.g.

Company 1
Company 2
Company 3
Company 1
Company 2
Company 3
Company 2
Company 3
Company 3

I need to delete them so as only the last should remain from each company instance.
I have a timestamp in the table.

The desired result would be
Company 1
Company 2
Company 3

Thank you in advance
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Question by:starhu
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1 Comment
 
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Accepted Solution

by:
Pratima Pharande earned 2000 total points
ID: 38773753
try this


 

DELETE n1 FROM Company_table n1, Company_table n2 WHERE n1.date_field > n2.date_field AND n1.company_name = n2.company_name

refer
http://stackoverflow.com/questions/4685173/delete-all-duplicate-rows-except-for-one-in-mysql

if any problem share the sample data and column names
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