Corrected sql;

Changed the documentation to create 5 fields that might actually be used.

Manufacturer's Part No
UPC
ISBN
EAN
Extra Field 1

The last field can be changed to any name by editing the language files.

The field only appears on the product_info page if there is something in it so the fact you are unlikely to hae an EAN/UPC/ISBN on the same product it is not a problem.

Can be used with google base feeds. http://addons.oscommerce.com/info/6531

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