Question

我有一张看起来像这样的表（100亿行）

 AID  BID  CID     
  1    2    1
  1    6    9 
  0    1    4 
  1    3    2 
  1    100  2 
  0    4    2 
  0    0    1

AID只能是0或1. BID和CID可以是任何东西。现在我想首先选择事件，AID = 1，然后AID = 0，再次AID = 1，然后AID = 0。想法是选择相等数量的AID = 1和AID = 0事件。我怎样才能做到这一点？

预期结果是

AID   BID   CID     
  1     2     1     
  0     1     4     
  1     6     9     
  0     4     2     
  1     3     2     
  0     0     1

Answer 1

;WITH cte AS (
select *
FROM (VALUES
(1, 2, 1),
(1, 6, 9),
(0, 1, 4),
(1, 3, 2),
(1, 100, 2), 
(0, 4, 2), 
(0, 0, 1)
) as t(AID, BID, CID)
),
withrow AS (
SELECT ROW_NUMBER() OVER (PARTITION BY AID ORDER BY AID) as RN, *
FROM cte)

SELECT AID,BID,CID
FROM withrow 
ORDER BY RN asc , aid desc

输出：

AID         BID         CID
----------- ----------- -----------
1           100         2
0           4           2
1           3           2
0           1           4
1           6           9
0           0           1
1           2           1

(7 row(s) affected)

奇数和偶数事件中的不同选择标准

1 个答案: