Asp.net 按照1.1.1对层次表进行排序

我正在使用CTE管理我的层次结构数据。下面是我的选择查询

 WITH ctLevel
                AS
                (
                    SELECT
                        C_TASK_ID                                                               AS Child
                        ,P_Task_ID                                                              AS Parent
                        ,common_task.   TASK_SEQ                                                AS taskSeq
                        ,1                                                                      AS [Level]
                        ,CAST( TASK_SEQ AS VARCHAR(MAX))                                        AS [taskOrder]
                        ,CAST (Replicate(TASK_SEQ,  1)+' '+ TASK_NAME  AS VARCHAR(MAX))  AS [Task_Name]
                        ,common_task.TASK_POSITION                                              AS [TASK_POSITION]
                    FROM   
                        [COMMON.TASK_REL] as common_task_rel, 
                        [COMMON.TASK] as common_task
                    WHERE  
                        common_task_rel.C_TASK_ID = common_task.TASK_ID
                        and     common_task.[TASK_TYPE] = 'F' AND common_task.[MODULE_CODE] ='PRODE' AND common_task.[STATUS] <> 'D'
                        and     common_task_rel.P_TASK_ID is null

                    UNION ALL

                    SELECT 
                        C_TASK_ID                                                                   AS Child
                        ,P_Task_ID                                                                  AS Parent
                        ,common_task.   TASK_SEQ                                                    AS taskSeq
                        ,[Level] + 1                                                                AS [Level]
                        ,[taskOrder] + '.' + CAST(TASK_SEQ AS VARCHAR(MAX))                         AS [taskOrder]
                          ,CAST (Replicate('&nbsp;&nbsp;&nbsp;', [Level] + 1) + taskOrder + '.' + CAST(TASK_SEQ AS VARCHAR(MAX))+' ' +common_task.TASK_NAME AS VARCHAR(MAX))  AS [Task_Name]
                        ,common_task.TASK_POSITION                                              AS [TASK_POSITION]
                    FROM   
                        [COMMON.TASK_REL]as common_task_rel
                    INNER JOIN 
                        ctLevel
                    ON 
                        ( P_Task_ID = Child ) ,
                        [COMMON.TASK] as common_task

                    WHERE  
                            common_task_rel.C_TASK_ID = common_task.TASK_ID
                    and     common_task.[TASK_TYPE] = 'F' AND common_task.[MODULE_CODE] = 'PRODE' AND common_task.[STATUS] <> 'D'
                    )

                   SELECT [Parent] ,[Child],taskSeq, Level,[taskOrder],Task_Name,[TASK_POSITION]
                    FROM   ctLevel  
                    order by [taskOrder],[Level],[TASK_POSITION]

---

提前感谢。

将数字格式化为

001

，例如：

right('000' + convert(varchar(max), [Level] + 1),3)

---

将数字格式化为

001

，例如：

right('000' + convert(varchar(max), [Level] + 1),3)

---

适用于SQL2008+

而不是生成

Num1.Num2.Num3

。。。值您可以生成易于按ASC或DESC排序的值。将VARCHAR值转换为HIERARCHYID数据类型时，必须遵循以下语法：

/Num1/Num2/Num3/

：

SELECT *, CONVERT(VARCHAR(50), T.A) AS VarCharHI, T.A.GetLevel()
FROM (VALUES
        ( CONVERT(HIERARCHYID, '/1/') , 'A' ),
        ( CONVERT(HIERARCHYID, '/2/11/1/1/1/') , 'C' ),
        ( CONVERT(HIERARCHYID, '/40/11/1/') , 'D' ),
        ( CONVERT(HIERARCHYID, '/5/11/') , 'D' ),
        ( CONVERT(HIERARCHYID, '/2/2/') , 'B' ) ) AS T(A,B)
ORDER BY T.A ASC;

结果:

A           B    VarCharHI                                          GetLevel()
----------- ---- -------------------------------------------------- ----------
0x58        A    /1/                                                1
0x6B40      B    /2/2/                                              2
0x6D75AD60  C    /2/11/1/1/1/                                       5
0x8EB8      D    /5/11/                                             2
0xCB1AEB    D    /40/11/1/                                          3

我会作出以下更改：

WITH ctBaseLevel
AS
(
...
,'/' + CAST( TASK_SEQ AS VARCHAR(MAX)) + '/' AS [taskOrder]
...
UNION ALL
...
,[taskOrder] + CAST(TASK_SEQ AS VARCHAR(MAX)) + '/'
...
) , ctLevel
AS
(
SELECT l.*, CONVERT(HIERARCHYID, l.[taskOrder]) AS  [taskOrder_HIERARCHYID]
FROM ctBaseLevel l
)
SELECT * FROM cteLevel ORDER BY [taskOrder_HIERARCHYID];

---

适用于SQL2008+

而不是生成

Num1.Num2.Num3

。。。值您可以生成易于按ASC或DESC排序的值。将VARCHAR值转换为HIERARCHYID数据类型时，必须遵循以下语法：

/Num1/Num2/Num3/

：

SELECT *, CONVERT(VARCHAR(50), T.A) AS VarCharHI, T.A.GetLevel()
FROM (VALUES
        ( CONVERT(HIERARCHYID, '/1/') , 'A' ),
        ( CONVERT(HIERARCHYID, '/2/11/1/1/1/') , 'C' ),
        ( CONVERT(HIERARCHYID, '/40/11/1/') , 'D' ),
        ( CONVERT(HIERARCHYID, '/5/11/') , 'D' ),
        ( CONVERT(HIERARCHYID, '/2/2/') , 'B' ) ) AS T(A,B)
ORDER BY T.A ASC;

结果:

A           B    VarCharHI                                          GetLevel()
----------- ---- -------------------------------------------------- ----------
0x58        A    /1/                                                1
0x6B40      B    /2/2/                                              2
0x6D75AD60  C    /2/11/1/1/1/                                       5
0x8EB8      D    /5/11/                                             2
0xCB1AEB    D    /40/11/1/                                          3

我会作出以下更改：

WITH ctBaseLevel
AS
(
...
,'/' + CAST( TASK_SEQ AS VARCHAR(MAX)) + '/' AS [taskOrder]
...
UNION ALL
...
,[taskOrder] + CAST(TASK_SEQ AS VARCHAR(MAX)) + '/'
...
) , ctLevel
AS
(
SELECT l.*, CONVERT(HIERARCHYID, l.[taskOrder]) AS  [taskOrder_HIERARCHYID]
FROM ctBaseLevel l
)
SELECT * FROM cteLevel ORDER BY [taskOrder_HIERARCHYID];

---

由于排序时数据将被视为文本，因此您需要确保每个部分（在“.”之间）使用相同数量的字符。为了使排序正确，需要将1表示为01。由于排序时数据将被视为文本，因此需要确保每个部分（在“.”之间）使用相同数量的字符。为了使您的排序正确，需要将1表示为01。谢谢您的解决方案。此查询在sql server 2005上有效吗？sql server 2008中引入了hierarchyid数据类型。感谢您的解决方案。此查询在sql server 2005上有效吗？在sql server 2008中引入了hierarchyid数据类型。