<?php 

// Reserved column names
return array(
	'id',
	'product_type',
	'post_id',
	'post_title',
	'post_name',
    	'post_status',
    	'post_date',
	'post_date_gmt',
    	'post_content',
	'post_excerpt',
	'post_parent',
	'post_password',
	'sku',
    	'post_type',
	'post_author',
	'menu_order',
	'postmeta',
	'comment_status',
	'downloadable',
	'virtual',
	'visibility',
	'stock',
	'stock_status',
	'backorders',
	'manage_stock',
	'price',
	'sale_price',
	'regular_price',
	'weight',
	'length',
	'width',
	'height',
	'tax_status',
	'tax_class',
	'upsell_ids',
	'crosssell_ids',
	'upsell_skus',
	'crosssell_skus',
	'sale_price_dates_from',
	'sale_price_dates_to',
	'min_variation_price',
	'max_variation_price',
	'min_variation_regular_price',
	'max_variation_regular_price',
	'min_variation_sale_price',
	'max_variation_sale_price',
	'featured',
	'file_path',
	'file_paths',
	'downloadable_files',
	'download_limit',
	'download_expiry',
	'product_url',
	'button_text',
	'default_attributes'
);