Question

我有一个这样的表，其中包含一个列号Order

FunctionID Name         ParentFunctionID OrderNo Enabled ControllerName ActionName
1          Nikhil       0                10      1       nik
2          Sahil        0                20      1       sah
3          With         2                10      1       sah            Withsnew
4          User         2                20      1       sah            users
5          Pen          2                10      0       sah            pend
44         User Summary 2                210     1       sah            usersummary
45         Summary      2                230     1       sah            summary
46         Hourly       1                231     1       nik            hourly
47         Code         1                232     1       nik            code

我希望像

这样的表格

FunctionID Name         ParentFunctionID OrderNo Enabled ControllerName ActionName
1          Nikhil       0                1       1       nik
2          Sahil        0                2       1       sah
3          With         2                1       1       sah            Withsnew
4          User         2                2       1       sah            users
5          Pen          2                3       0       sah            pend
44         User Summary 2                4       1       sah            usersummary
45         Summary      2                5       1       sah            summary
46         Hourly       1                1       1       nik            hourly
47         Code         1                2       1       nik            code

Answer 1

使用 ROWNUM 功能：

SELECT 
  FunctionID ,
  Name ,
  ParentFunctionID, 
  ROWNUM AS ORDER_NO,
  Enabled,
  ControllerName ,
  ActionName 
FROM TABLE NAME;

如果您希望根据特定条件重置rownumbers，请使用 PARTITION 以及 ROW_NUMBER AS：

SELECT 
  FunctionID ,
  Name ,
  ParentFunctionID, 
  ROW_NUMBER() OVER (PARTITION BY ParentFunctionID ORDER BY FunctionID )  AS ORDER_NO,
  Enabled,
  ControllerName ,
  ActionName 
FROM TABLE NAME;

Answer 2

您可以使用ROW_NUMBER (Transact-SQL)枚举由ParentFunctionID排序的FunctionID分区的行，以获得您想要的结果。

SQL Fiddle

MS SQL Server 2012架构设置：

create table YourTable
(
  FunctionID int,
  Name varchar(20),
  ParentFunctionID int,
  OrderNo int,
  Enabled bit,
  ControllerName varchar(20),
  ActionName varchar(20)
)

go

insert into YourTable values
(1 ,         'Nikhil      ', 0,                10 ,     1,       'nik',            '           '), 
(2 ,         'Sahil       ', 0,                20 ,     1,       'sah',            '           '),
(3 ,         'With        ', 2,                10 ,     1,       'sah',            'Withsnew   '),
(4 ,         'User        ', 2,                20 ,     1,       'sah',            'users      '),
(5 ,         'Pen         ', 2,                10 ,     0,       'sah',            'pend       '),
(44,         'User Summary', 2,                210,     1,       'sah',            'usersummary'),
(45,         'Summary     ', 2,                230,     1,       'sah',            'summary    '),
(46,         'Hourly      ', 1,                231,     1,       'nik',            'hourly     '),
(47,         'Code        ', 1,                232,     1,       'nik',            'code       ')

查询1 ：

with C as
(
  select OrderNo,
         row_number() over(partition by ParentFunctionID order by FunctionID) as rn
  from YourTable
)
update C
set OrderNo = rn

select *
from YourTable

<强> Results ：

| FUNCTIONID |         NAME | PARENTFUNCTIONID | ORDERNO | ENABLED | CONTROLLERNAME |  ACTIONNAME |
|------------|--------------|------------------|---------|---------|----------------|-------------|
|          1 | Nikhil       |                0 |       1 |       1 |            nik |             |
|          2 | Sahil        |                0 |       2 |       1 |            sah |             |
|          3 | With         |                2 |       1 |       1 |            sah | Withsnew    |
|          4 | User         |                2 |       2 |       1 |            sah | users       |
|          5 | Pen          |                2 |       3 |       0 |            sah | pend        |
|         44 | User Summary |                2 |       4 |       1 |            sah | usersummary |
|         45 | Summary      |                2 |       5 |       1 |            sah | summary     |
|         46 | Hourly       |                1 |       1 |       1 |            nik | hourly      |
|         47 | Code         |                1 |       2 |       1 |            nik | code        |

Answer 3

您可以像使用

一样使用ROW_NUMBER和ParentFunctionID进行分区

SELECT FunctionID, Name, ParentFunctionID
, ROW_NUMBER() OVER(PARTITION BY ParentFunctionID ORDER BY FunctionID) OrderNo
, [Enabled], ControllerName, ActionName
FROM TABLENAME

这将返回结果集，如果要更新，可以修改脚本。

我希望这有用。

查询更改列的值？

3 个答案: