使用ROW_NUMBER() OVER(PARTITION BY COLUMN ORDER BY COLUMN)為查詢結果添加序號列
row_number() over(partition by col1 order by col2)表示根據col1分組，在分組內部根據col2排序，而此函數計算的值就表示每組內部排序后的順序編號
例如：
select ROW_NUMBER() OVER(ORDER BY Convey_Fee desc) as z,rank() OVER(ORDER BY Convey_Fee desc) as z,DENSE_RANK() OVER(ORDER BY Convey_Fee desc) as z,NTILE(4) OVER(ORDER BY Convey_Fee desc) as z,(select sum(1) from Consign_D where Convey_Fee<=a.Convey_Fee) num,(select sum(1) from Consign_D where Convey_Fee<a.Convey_Fee) num1,Convey_Fee from Consign_D a order by Convey_Fee desc
結果：
