alter table `tb_data_resource` ADD COLUMN `total` int NULL comment '整体评分';

update tb_data_resource,
tb_data_resource_assignmark
SET tb_data_resource.total = round(tb_data_resource_assignmark.total)
WHERE
	tb_data_resource.id = tb_data_resource_assignmark.id;

alter table `tb_data_resource`ADD INDEX `total`(`total` DESC) USING BTREE;