SQL選擇條件

Question

我有一個包含下面的結構數據的表：

Id | OperationType | ObjectName | dt_created 
-- | ------------- | ---------- | ---------- 
1 | 4    | test.com | 2015-08-30 23:23:57.000 
2 | 7    | test.com | 2015-08-30 23:23:57.000 
3 | 17   | test.com | 2015-08-30 23:23:57.000 
4 | 26   | test.com | 2015-08-30 23:23:57.000 
5 | 8    | test.com | 2015-08-30 23:23:57.000 
6 | 4    | test.com | 2015-08-30 23:23:57.000 
7 | 17   | 123.com | 2015-08-30 23:23:57.000 
8 | 18   | 123.com | 2015-08-30 23:23:57.000 
9 | 26   | 123.com | 2015-08-30 23:23:57.000 
10 | 8    | 123.com | 2015-08-30 23:23:57.000 

我想記錄的ID的地方有一個操作型其次

我試圖像幾個方法：

 
select abc.id, abc.PreviousOperationType 
from (select id, 
     case 
      when OperationType = 26 
      then 
       lead(OperationType, 1, 0) over (partition by id order by id) 
      else 
       null 
      end as PreviousOperationType 
from operation 
where dt_created between '2015-09-20' and '2015-09-30') as abc 
where abc.PreviousOperationType is not null and abc.PreviousOperationType= 17 

，但沒能得到準確的結果。

任何幫助，將不勝感激。

感謝， Ĵ

Answer 1

下面的查詢給出了你ID 3，因爲它是類型17的，隨後是類型26

select id 
from 
(
    select 
    id, 
    operationtype, 
    lead(operationtype) over (order by dt_created) as next_operationtype 
    from operation 
) op 
where operationtype = 17 and next_operationtype = 26; 

Answer 2

你接近：

select abc.id, abc.PreviousOperationType 
from (select id, 
      OperationType, 
      lead(OperationType, 1, 0) over (order by id) NextOperationType 
     from operation 
     where dt_created between '2015-09-20' and '2015-09-30') abc 
where abc.OperationType = 17 AND 
     abc.NextOperationType= 26 

無需通過子句中使用該分區的LEAD()功能裏面，因爲每個ID都是唯一的。

Answer 3

只是使用ROW_NUMBER（）功能，而不鉛（）函數，因此，兼容的記錄與SQL Server 2008和2005年太:)

;WITH X AS (
Select * 
     ,ROW_NUMBER() OVER (ORDER BY ID) rn 
from TableName) 
SELECT x.* 
FROM X x 
INNER JOIN X y ON x.rn + 1 = y.rn 
       AND x.OperationType = 17 
       AND y.OperationType = 26