select * from ( SELECT t.*,ROW_NUMBER() over (partition by t.pid order by t.op_time desc) num FROM [master].[dbo].[Table_1] t ) a where num=1
select * from ( SELECT t.*,ROW_NUMBER() over (partition by t.pid order by t.op_time desc) num FROM [master].[dbo].[Table_1] t ) a where num=1
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