How to Delete Duplicate Records?

In a MySQL (3.22.51) file I have three fields

idx (Auto Increment)
filename
pathname

I use an insert command in a dump.sql file to add new records to my file.

INSERT INTO jpeglist (idx, filename, pathname) VALUES ( '', 'c-purpsparkle26w-1.jpg', 'dennisj/20021007');

Sometimes I end up adding the same record twice.

How can I find all duplicate records in Field 'filename' and delete the extra records?

Can I change the INSERT INTO command so new records are added and duplicate records are only updated?

TIA

Dennis

Maybe you'll find this interesting?
http://www.mysql.com/doc/en/REPLACE.html

SELECT *, count(*) cnt FROM tableName GROUP BY fieldname1, fieldname2, .... HAVING cnt > 1

This will return all the records in the tableName more than 1 time. Include all the fields except the auto increment field in GROUP BY part.

Rest is trivial

Why not use a unique index on the table?

That way when it comes to actually inserting the record:
"INSERT INTO jpeglist (idx, filename, pathname) VALUES ( '', 'c-purpsparkle26w-1.jpg', 'dennisj/20021007');"
it will complain about this being a duplicate record and will not insert a new record. This will elliminate duplicate files without actually having to build any code for it?

Thanx
Clive

Every man has different problems vith files. I know how to solve the problem with duplicate files. I use Duplicate checker PRO 6.0 for such purposes (http://www.atory.com/Dupe_Checker_PRO/). I suggest you to try it if you experience "dupe-problem"...

Good luck!

You've exhumed a long-dead thread to pimp an irrelevant product (the problem is duplicate records in a database, not duplicate files).

Please don't do that.

Find and delete duplicate files and folders by Dupe Checker PRO

Deja vu.