Select duplicate records only

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December 16th, 2004, 06:07 PM

DDDooGGG

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Location: Melbourne, Australia

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Select duplicate records only

How do i go about selecting duplicate records, that have the same id's? I think it will be a modified version of hte following:

Code:

SELECT DISTINCT column1 FROM table

this selects all distinctly different rows, so whats the opposite to this?

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regards,

Fulton

December 17th, 2004, 05:14 AM

Angela

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Quote:

Originally Posted by DDDooGGG

How do i go about selecting duplicate records, that have the same id's? I think it will be a modified version of hte following:

Code:

SELECT DISTINCT column1 FROM table

this selects all distinctly different rows, so whats the opposite to this?

Try this one:

Code:

SELECT DISTINCT column1 from table
group by column1 HAVING count(column1) > 1

This groups your id's and only shows the id's that have more than 1 occurence in your table.

Hope this helps!

Angela

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