Row_Number（）在联合查询中继续

Question

;WITH CTE AS
(
Select * From
        (
        SELECT ROW_NUMBER() OVER(ORDER BY StatusDate) AS SrNo, FirstName
From Tab1
  UNION ALL
   SELECT ROW_NUMBER() OVER(ORDER BY StatusDate) AS SrNo, FirstName
   From Tab2
) v
)
Select * From CTE

是否有可以Row_Number()在Tab1中生成后继续的操作。因此，如果第一个结果UNION以10000结尾，则UNION中的第二个表应从10001开始

注意：我想要Row_Number()它，因为它位于Select * From

因此，我不能将其更改为：

;WITH CTE AS
(
Select *, ROW_NUMBER() OVER(ORDER BY StatusDate) AS SrNo From
        (
        SELECT FirstName
From Tab1
  UNION ALL
   SELECT FirstName
   From Tab2
) v
)
Select * From CTE

任何帮助是极大的赞赏。

Answer 1

由于您不对数据进行分区，因此最大row_number应该等于行数，因此您可以简单地将tab1中的行数添加到tab2中的行数：

;WITH CTE AS
(
SELECT * FROM
        (
        SELECT 
          ROW_NUMBER() OVER(ORDER BY StatusDate) AS SrNo, 
          FirstName 
       FROM Tab1
       UNION ALL
       SELECT 
          ROW_NUMBER() OVER(ORDER BY StatusDate) + (SELECT COUNT(*) FROM tab1) AS SrNo, 
          FirstName 
       FROM Tab2
       ) v
)
SELECT * FROM CTE