Magento Bulk Update Product Description MySQL

bulk update product description before check the attribute_id in magento_eav_attribute
should be the same :)

check....
SELECT * FROM `magento_eav_attribute` where attribute_id = 66

btw i am using Magento Community Edition 1.6.2

UPDATE `magento_catalog_product_entity_text` 

SET value =  'this guide only and not necessarily of the 

exact size and may differ in features.' 

WHERE attribute_id =66