其中pro_id，day_date为唯一索引

insert into pro(
                        pro_id,
			day_date,
			price,		
			remark
		) values 
		<foreach item="item" index="index" collection="list" 
			separator=",">
			(
			 #{item.proId,jdbcType=NUMERIC}  ,
			str_to_date( #{item.dayDate,jdbcType=DATE} , '%Y-%m-%d %h:%i:%s') ,
			 #{item.price,jdbcType=DECIMAL}  ,
			 #{item.remark,jdbcType=VARCHAR}  
			)
		</foreach>
		ON DUPLICATE KEY UPDATE  
			price = VALUES(price),
			remark = VALUES(remark)