Question

假设我有一个包含以下列的表：

Id,   ConnectionId,  File,      FileCreated
int,     int,       varchar,     DateTime

数据示例

此外，假设它填充了未分类的数据，如下所示：

    1, 3, "a.dat", 2018-05-16 13:53:40.008
    2, 1, "b.dat", 2018-05-16 13:53:40.007
    3, 3, "c.dat", 2018-05-16 13:53:40.009
    4, 3, "z.dat", 2018-05-16 13:53:40.002
    5, 3, "h.dat", 2018-05-16 13:53:40.003
    6, 2, "ba.dat", 2018-05-16 13:53:40.004
    7, 3, "zy.dat", 2018-05-16 13:53:40.005
    8, 1, "f.dat", 2018-05-16 13:53:40.001
    9, 1, "cd.dat", 2018-05-16 13:53:40.006

我如何查询此数据以便数据集返回我：

每个连接一行
及时按升序排序

预期结果

我正在寻找的结果如下：

（注意：我将这些放入群组中，以便您可以看到它们首先根据ConnectionId返回（可能是分组）。

8, 1, "f.dat", 2018-05-16 13:53:40.001
4, 3, "z.dat", 2018-05-16 13:53:40.002
6, 2, "ba.dat", 2018-05-16 13:53:40.004

5, 3, "h.dat", 2018-05-16 13:53:40.003
9, 1, "cd.dat", 2018-05-16 13:53:40.006

7, 3, "zy.dat", 2018-05-16 13:53:40.005
2, 1, "b.dat", 2018-05-16 13:53:40.007

1, 3, "a.dat", 2018-05-16 13:53:40.008
3, 3, "c.dat", 2018-05-16 13:53:40.009

希望我的示例向您展示这些不是严格基于时间的，也不是严格基于connectionId的。这两者都是。

Answer 1

您可以在SELECT ENAME, CONVERT(VARCHAR(3),DATEDIFF(MONTH, DOJ, GETDATE())/12) +' years '+ CONVERT(VARCHAR(2),DATEDIFF(MONTH, DOJ, GETDATE()) % 12)+ ' months' AS AgeInYears, CONVERT(VARCHAR(3),DATEDIFF(MONTH, hiredate, GETDATE())/12) +' years '+ CONVERT(VARCHAR(2),DATEDIFF(MONTH, hiredate, GETDATE()) % 12)+ ' months' AS EXPERIENCEInYears FROM EMPLOYEE;子句中使用row_number()：

order by

Answer 2

尝试这样

DECLARE @mockup TABLE(Id INT,ConnectionId INT,[File] VARCHAR(100),FileCreated DATETIME2);
INSERT INTO @mockup VALUES
 (1, 3, 'a.dat','2018-05-16T13:53:40.008')
,(2, 1, 'b.dat','2018-05-16T13:53:40.007')
,(3, 3, 'c.dat','2018-05-16T13:53:40.009')
,(4, 3, 'z.dat','2018-05-16T13:53:40.002')
,(5, 3, 'h.dat','2018-05-16T13:53:40.003')
,(6, 2, 'ba.dat','2018-05-16T13:53:40.004')
,(7, 3, 'zy.dat','2018-05-16T13:53:40.005')
,(8, 1, 'f.dat','2018-05-16T13:53:40.001')
,(9, 1, 'cd.dat','2018-05-16T13:53:40.006');

SELECT *
FROM @mockup
ORDER BY ROW_NUMBER() OVER(PARTITION BY ConnectionId ORDER BY FileCreated)
        ,FileCreated;

编辑这个很棒的答案来添加结果（并将更新的DateTime添加到DateTime2）：太棒了 - 结果完全符合我的预期结果。

Id  ConnectionId    File    FileCreated
8   1              f.dat    2018-05-16 13:53:40.0010000
4   3              z.dat    2018-05-16 13:53:40.0020000
6   2              ba.dat   2018-05-16 13:53:40.0040000
5   3              h.dat    2018-05-16 13:53:40.0030000
9   1              cd.dat   2018-05-16 13:53:40.0060000
7   3              zy.dat   2018-05-16 13:53:40.0050000
2   1              b.dat    2018-05-16 13:53:40.0070000
1   3              a.dat    2018-05-16 13:53:40.0080000
3   3              c.dat    2018-05-16 13:53:40.0090000

SQL查询以基于两列返回整理结果

2 个答案: