SELECT * FROM mall_review WHERE product_id = #{productId} ORDER BY id DESC LIMIT #{limit} SELECT * FROM mall_review WHERE id = #{id} INSERT INTO mall_review (product_id, order_id, author, rating, title, content, image_url, store_id, helpful_count) VALUES (#{productId}, #{orderId}, #{author}, #{rating}, #{title}, #{content}, #{imageUrl}, #{storeId}, 0) DELETE FROM mall_review WHERE id = #{id} AND author = #{author} UPDATE mall_review SET helpful_count = COALESCE(helpful_count,0) + 1 WHERE id = #{id} SELECT COALESCE(ROUND(AVG(rating)::numeric,2),0) AS avg, COUNT(*) AS cnt FROM mall_review WHERE product_id = #{productId} UPDATE mall_product SET rating_avg = (SELECT COALESCE(ROUND(AVG(rating)::numeric,2),0) FROM mall_review WHERE product_id = #{productId}), review_count = (SELECT COUNT(*) FROM mall_review WHERE product_id = #{productId}) WHERE id = #{productId} SELECT content FROM mall_review WHERE product_id = #{productId} AND content IS NOT NULL ORDER BY id DESC LIMIT #{limit}