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24. twinsoft1,800
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6.8

Look for duplicate records

Asked by mbrlaser in Interbase / Firebird Database

Experts:

You can help me with this command SQL. The database is Interbase and it contains something of 55.000 registers, and I try to look for the copies. When I execute it with Microsoft Jet engine this it is executed in few seconds, but with BDE I have left it up to 30 minutes and it doesn't finish.

SELECT *
FROM movement
WHERE cod_barras in (select cod_barras from movement group by cod_barras having count (*)> 1)

That I can make so that it is effective in BDE, since the application uses this engine.

Note: Congratulations to the creator of the new web page.

Best Regards.

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20091111-EE-VQP-92

Look for duplicate records

Asked by mbrlaser in Interbase / Firebird Database

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