CREATE TABLE IF NOT EXISTS `sys_position_user` ( `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT, `position_id` char(36) NOT NULL, `user_id` char(36) NOT NULL, PRIMARY KEY (`id`), KEY `user_id_idx` (`user_id`) USING BTREE, KEY `position_id_idx` (`position_id`) USING BTREE ) ENGINE=InnoDB DEFAULT CHARSET=utf8; INSERT INTO sys_position_user( position_id, user_id ) VALUES( #{positionId}, #{userId} ) DELETE FROM sys_position_user WHERE 1 = 1 AND position_id = #{positionId} AND user_id = #{userId} AND user_id IN #{userIds[${index}]}