SELECT c.*, p.name AS product_name, COALESCE(p.sale_price, p.price) AS unit_price, p.thumbnail AS thumbnail, o.option_value AS option_label FROM mall_cart_item c JOIN mall_product p ON p.id = c.product_id LEFT JOIN mall_product_option o ON o.id = c.option_id WHERE c.owner = #{owner} ORDER BY c.id DESC SELECT * FROM mall_cart_item WHERE owner = #{owner} AND product_id = #{productId} AND (option_id = #{optionId} OR (#{optionId} IS NULL AND option_id IS NULL)) SELECT * FROM mall_cart_item WHERE id = #{id} INSERT INTO mall_cart_item (owner, product_id, option_id, size_code, card_message, quantity) VALUES (#{owner}, #{productId}, #{optionId}, #{sizeCode}, #{cardMessage}, COALESCE(#{quantity},1)) UPDATE mall_cart_item SET quantity = #{quantity} WHERE id = #{id} AND owner = #{owner} DELETE FROM mall_cart_item WHERE id = #{id} AND owner = #{owner} DELETE FROM mall_cart_item WHERE owner = #{owner}