Use the following query to Delete All WooCommerce Products
DELETE relations.*, taxes.*, terms.* FROM wp_term_relationships AS relations INNER JOIN wp_term_taxonomy AS taxes ON relations.term_taxonomy_id=taxes.term_taxonomy_id INNER JOIN wp_terms AS terms ON taxes.term_id=terms.term_id WHERE object_id IN (SELECT ID FROM wp_posts WHERE post_type=‘product’); DELETE FROM wp_postmeta WHERE post_id IN (SELECT ID FROM wp_posts WHERE post_type = ‘product’); DELETE FROM wp_posts WHERE post_type = ‘product’;
How to Instantly Delete All Your WooCommerce Products With MySQL