MySQL查询避免使用变量

有没有办法将第一个查询放入主查询并避免变量集

SET @domain_id = (SELECT id FROM stop_domain LIMIT 1);
SELECT
  IFNULL(MAX(duid), 0) + 1 AS duid
  , @domain_id
FROM
  stop_link
WHERE domain_id = @domain_id;

停止域

id | url

停止链接

id | duid | domain_id

确实有,

SELECT
  IFNULL(MAX(duid), 0) + 1 AS duid
  , domain_id
FROM
  stop_link
WHERE domain_id = (SELECT id FROM stop_domain LIMIT 1);

---

这表明：在没有分组依据的聚合查询中，SELECT列表的表达式#2包含未聚合的列“t.id”；这与sql_mode=only_full_group_BY不兼容。这显示在没有分组依据的聚合查询中，选择列表的表达式#2包含非聚合列“stop_link.domain_id”；这与sql\u mode=only\u full\u group\u by不兼容

SELECT     IFNULL(MAX(duid), 0) + 1 AS duid
           ,t.id
FROM       (SELECT id FROM stop_domain LIMIT 1) t
INNER JOIN stop_link
ON         domain_id = t.id
GROUP BY   t.id;