四、ProductCategoryDao.xml

    
    
        
        SELECT
        product_category_id,
        product_category_name,
        priority,
        create_time,
        shop_id
        FROM
        tb_product_category
        WHERE
        shop_id = #{shopId}
        ORDER BY
        priority DESC
    
    
        INSERT INTO
        tb_product_category(product_category_name, priority,
        create_time, shop_id)
        VALUES
        
            (
            #{productCategory.productCategoryName},
            #{productCategory.priority},
            #{productCategory.createTime},
            #{productCategory.shopId}
            )
        
    
    
        DELETE FROM
        tb_product_category
        WHERE
        product_category_id = #{productCategoryId}
        AND shop_id = #{shopId}