adminhtml ? Magento addAttribute duplicate after delete of ...

if i delete core_resource.code=?my_setup_module? and rerun magento, everything in my sql/ files duplicates. is there a way to prevent this? (that?s it. the rest of this is buffer material so stackoverflow let?s me submit.)

example sql file

$installer->addAttribute('catalog_product', 'googlemerchant_category', array(     'label'         => 'Google Merchant category',     'type'          => 'varchar',     'input'         => 'multiselect',     'backend'       => 'eav/entity_attribute_backend_array',     'global'        => Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_STORE,     'group'         => 'Google Merchant',     'visible'       => 1,     'required'      => 0,     'position'      => 2,     'option' =>         array (             'value' =>                 array(                     'option1' => array('Apparel & Accessories > Clothing'),                     'option2' => array('Apparel & Accessories > Clothing > Activewear > Sweatshirts'),                     'option3' => array('Apparel & Accessories > Clothing > Underwear & Socks > Socks'),                     'option4' => array('Apparel & Accessories > Clothing Accessories'),                     'option5' => array('Apparel & Accessories > Shoes'),                     'option6' => array('Apparel & Accessories > Shoes > Athletic Shoes'),                     'option7' => array('Apparel & Accessories > Shoes > Sneakers'),                     'option8' => array('Apparel & Accessories > Clothing > Hats'),                     'option9' => array('Apparel & Accessories > Clothing > Shorts'),                     'option10' => array('Apparel & Accessories > Handbags'),                     'option11' => array('Food, Beverages & Tobacco > Food Items'),                     'option12' => array('Hardware > Flooring'),                     'option13' => array('Health & Beauty > Health Care > Physical Therapy Equipment'),                     'option14' => array('Media'),                     'option15' => array('Media > Books'),                     'option16' => array('Media > Books > Non-Fiction'),                     'option17' => array('Media > Books > Non-Fiction > Body, Mind & Spirit Books'),                     'option18' => array('Media > Books > Non-Fiction > Health & Fitness Books'),                     'option19' => array('Media > DVDs & Videos'),                     'option20' => array('Sporting Goods > Exercise & Fitness'),                     'option21' => array('Sporting Goods > Exercise & Fitness > Abdominal Equipment'),                     'option22' => array('Sporting Goods > Exercise & Fitness > Exercise Balls'),                     'option23' => array('Sporting Goods > Exercise & Fitness > Exercise Bands'),                     'option24' => array('Sporting Goods > Exercise & Fitness > Foam Rollers'),                     'option25' => array('Sporting Goods > Exercise & Fitness > Free Weight Bars'),                     'option26' => array('Sporting Goods > Exercise & Fitness > Gym Mats'),                     'option27' => array('Sporting Goods > Exercise & Fitness > Jump Ropes'),                     'option28' => array('Sporting Goods > Exercise & Fitness > Medicine Balls'),                     'option29' => array('Sporting Goods > Exercise & Fitness > Stopwatches'),                     'option30' => array('Sporting Goods > Exercise & Fitness > Weight Benches'),                     'option31' => array('Sporting Goods > Exercise & Fitness > Weightlifting Belts'),                     'option32' => array('Sporting Goods > Exercise & Fitness > Weightlifting Gloves'),                     'option33' => array('Sporting Goods > Exercise & Fitness > Weightlifting Machine Accessories'),                     'option34' => array('Sporting Goods > Gymnastics > Gymnastics Bars'),                     'option35' => array('Sporting Goods > Gymnastics > Gymnastics Mats'),                     'option36' => array('Sporting Goods > Gymnastics > Gymnastics Rings'),                     'option37' => array('Sporting Goods > Jumping')                 )         ) )); 

magento adminhtml

Source: http://www.1771.in/adminhtml-magento-addattribute-duplicate-after-delete-of-core_resource-entry.html

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