SQL选择条件

Question

我有一个包含下面的结构数据的表：

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 

我想记录的ID的地方有一个操作型其次

我试图像几个方法：

 
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 

，但没能得到准确的结果。

任何帮助，将不胜感激。

感谢， Ĵ

Answer 1

下面的查询给出了你ID 3，因为它是类型17的，随后是类型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 

无需通过子句中使用该分区的LEAD()功能里面，因为每个ID都是唯一的。

Answer 3

只是使用ROW_NUMBER（）功能，而不铅（）函数，因此，兼容的记录与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