CREATE TABLE `product_info` (
`list_time` TIMESTAMP COMMENT '上架时间',
`delist_time` TIMESTAMP COMMENT '下架时间',
`create_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
`update_time` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP COMMENT '修改时间'
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='商品表';