参考帖子:https://bbs.fanruan.com/wenda/question/57442.html
select
case
when t1.name is
null
then t2.name
else
t1.name end as t_name
,t1.english
,t2.french
from
(select name,english from tabname where french is
null
) t1
full join
(select name,french from tabname where english is
null
) t2
on t1.name = t2.name
=======
更新:
关联数据集-https://help.fanruan.com/finereport/doc-view-125.html