Question

我有一个返回下表的查询。 Null表示员工仍在该任务中：

|Dept|EmployeeAssignment|BeginDate |EndDate   |
|1003|Analyst           |01/01/1990|02/04/2013|
|1002|Coordinator       |05/14/2000|06/01/2013|
|1003|Trainer           |07/28/2010|NULL      |
|1004|Janitor           |08/09/2013|NULL      |
|1005|IT                |09/02/2013|12/21/2013|

我能做些什么可以让我跟踪员工是否在2013年按月出现在该任务中。这样的事情是理想的：

|Dept|EmployeeAssignment|BeginDate |EndDate   |Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec|
|1003|Analyst           |01/01/1990|02/04/2013| 1 | 1 |   |   |   |   |   |   |   |   |   |   |
|1002|Coordinator       |05/14/2000|06/01/2013| 1 | 1 | 1 | 1 | 1 | 1 |   |   |   |   |   |   |
|1003|Trainer           |07/28/2010|NULL      | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
|1004|Janitor           |08/09/2013|NULL      |   |   |   |   |   |   |   | 1 | 1 | 1 | 1 | 1 | 
|1005|IT                |09/02/2013|12/21/2013|   |   |   |   |   |   |   |   | 1 | 1 | 1 | 1 |

提前感谢您提供的任何帮助。

Answer 1

您可以再次推断其他月份，但我认为这样做很明显。

Fiddle

//using your demo input
DECLARE @tbl TABLE(Dept INT,EmployeeAssignment VARCHAR(20),BeginDate DATE,EndDate DATE) 
INSERT INTO @tbl VALUES
(1003,'Analyst'           ,'01/01/1990','02/04/2013')
,(1002,'Coordinator'       ,'05/14/2000','06/01/2013')
,(1003,'Trainer'           ,'07/28/2010',NULL      )
,(1004,'Janitor'           ,'08/09/2013',NULL      )
,(1005,'IT'                ,'09/02/2013','12/21/2013')

SELECT * 
      ,CASE WHEN BeginDate <= '2013-01-31' AND ISNULL(EndDate,GETDATE()) >='2013-01-01' THEN 1 ELSE NULL END Jan
      ,CASE WHEN BeginDate <= '2013-02-28' AND ISNULL(EndDate,GETDATE()) >='2013-02-01' THEN 1 ELSE NULL END Feb
 FROM @tbl

TSQL：按月跟踪员工分配

1 个答案: