Addon minimum maximum quantity product - Installation - Table jshopping_products

Addon minimum maximum quantity product - Installation - Table jshopping_products

The installation of the three plugins I made manually. To update the database, in phpMyAdmin I use the SQL:

ALTER TABLE `jos_jshopping_products` ADD `max_count_product` INT NOT NULL DEFAULT `0`

This doesn't work and shows the error
#1064 - Fehler in der SQL-Syntax. Bitte die korrekte Syntax im Handbuch nachschlagen bei '`0`' in Zeile 1

How can I add the two new fields to the table jshopping_products?

Thank you,
Anita

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Aw: Addon minimum maximum quantity product - Installation - Table jshopping_products

1. Use Joomshopping install
2. or
ALTER TABLE `jos_jshopping_products` ADD `max_count_product` INT NOT NULL DEFAULT 0