select * from tb_library_book_asset where id = #{id} select * from tb_library_book_asset where del_flag = '0' and book_id = #{bookId} order by sort asc, id asc insert into tb_library_book_asset(book_id, asset_type, format, file_url, file_size, file_hash, oss_object_key, link_url, sort, create_by, create_time, del_flag) values (#{bookId}, #{assetType}, #{format}, #{fileUrl}, #{fileSize}, #{fileHash}, #{ossObjectKey}, #{linkUrl}, #{sort}, #{createBy}, #{createTime}, '0') delete from tb_library_book_asset where id = #{id}