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Message Posted: Wed, 06 Aug 2003 @ 11:23:38 GMT

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Subj:   Re: Need help in understanding poor performance
From:   Chris Coffing

Since this is a temp table... You can create it as a Multi Set table instead of a SET table and it will run faster because it will not have to check for duplication.

The problem that you run into when inserting millions of rows into a SET table is... as it gets bigger, there are more rows to recheck for duplicates.

If you find that you must create the temp table as a SET table and it starts as and empty table, then you can load it using a FastLoad.

Insert/Select is a great way to insert data into tables but can be very slow if you have large data volumes.

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