insert into data_block (`content_id`,`block_id`,`host`,`absolute_path`,`size`) values (#{contentId},#{blockId},#{host},#{absolutePath},#{size}) insert into data_block (`content_id`,`block_id`,`host`,`absolute_path`,`size`) values (#{item.contentId},#{item.blockId},#{item.host},#{item.absolutePath},#{item.size}) delete from data_block where content_id=#{contentId} select * from data_block where id>#{nextId} limit #{pageSize} select * from data_block where content_id=#{contentId} select relative_dir,count(*) as total from data_block group by relative_dir order by total asc update data_block set relative_dir=#{relativeDir} where id=#{id} update data_block when id=#{item.id} then #{item.relativeDir} id in #{item.id}