Product Category

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SELECT id,description FROM wpch_active8_category WHERE category_id= ORDER BY id ASC

WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'or category_2= or category_3= or category_4= or category_5=) ORDER BY sub_typ…' at line 1]
SELECT id,product_id,stock_id,title,slug,image_full,stock,price,catalog_text_line,allocation_id,allocation_msg,allocation_price,membership_status,unit_measure,unit_measure_value,unit_feature,unit_feature_value,master_inventory_id,tags,catalog_club_price,catalog_club_discount_text,alt_tag_text FROM wpch_active8_shop WHERE (master_inventory_id = '' OR master_inventory_id = product_id) AND (category_1= or category_2= or category_3= or category_4= or category_5=) ORDER BY sub_type ASC