select s.*
from (
select *, row_number() over (partition by [分组字段] order by [排序字段]) as 别名
from 表名称
) s
where s.别名 = 1
..
select s.*
from (
select *, row_number() over (partition by [分组字段] order by [排序字段]) as 别名
from 表名称
) s
where s.别名 = 1
..
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