数结构中，节点移动解决方案

我的数据表结构如下：

  1 USE db

  2 GO

  3 

  4 /****** Object:  Table [dbo].[cx_Navigation]    Script Date: 10/23/2014 22:36:28 ******/

  5 SET ANSI_NULLS ON

  6 GO

  7 

  8 SET QUOTED_IDENTIFIER ON

  9 GO

 10 

 11 CREATE TABLE [dbo].[cx_Navigation](

 12     [ID] [int] NOT NULL,

 13     [NavType] [tinyint] NOT NULL,

 14     [Name] [nvarchar](64) NOT NULL,

 15     [Title] [nvarchar](128) NOT NULL,

 16     [SubTitle] [nvarchar](128) NOT NULL,

 17     [LinkUrl] [nvarchar](256) NOT NULL,

 18     [SortID] [int] NOT NULL,

 19     [IsLock] [bit] NOT NULL,

 20     [Remark] [nvarchar](512) NOT NULL,

 21     [ParentID] [int] NOT NULL,

 22     [ClassList] [nvarchar](512) NOT NULL,

 23     [ClassLayer] [int] NOT NULL,

 24     [ChannelID] [int] NOT NULL,

 25     [ActionType] [nvarchar](512) NOT NULL,

 26     [IsSystem] [bit] NOT NULL,

 27  CONSTRAINT [PK_cx_NAVIGATION] PRIMARY KEY CLUSTERED 

 28 (

 29     [ID] ASC

 30 )WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]

 31 ) ON [PRIMARY]

 32 

 33 GO

 34 

 35 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'自增ID' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'ID'

 36 GO

 37 

 38 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'导航类别' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'NavType'

 39 GO

 40 

 41 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'导航ID' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'Name'

 42 GO

 43 

 44 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'标题' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'Title'

 45 GO

 46 

 47 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'副标题' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'SubTitle'

 48 GO

 49 

 50 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'链接地址' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'LinkUrl'

 51 GO

 52 

 53 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'排序数字' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'SortID'

 54 GO

 55 

 56 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'是否隐藏0显示1隐藏' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'IsLock'

 57 GO

 58 

 59 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'备注说明' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'Remark'

 60 GO

 61 

 62 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'所属父导航ID' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'ParentID'

 63 GO

 64 

 65 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'菜单ID列表(逗号分隔开)' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'ClassList'

 66 GO

 67 

 68 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'导航深度' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'ClassLayer'

 69 GO

 70 

 71 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'所属频道ID' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'ChannelID'

 72 GO

 73 

 74 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'权限资源' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'ActionType'

 75 GO

 76 

 77 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'系统默认' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation', @level2type=N'COLUMN',@level2name=N'IsSystem'

 78 GO

 79 

 80 EXEC sys.sp_addextendedproperty @name=N'MS_Description', @value=N'系统导航菜单' , @level0type=N'SCHEMA',@level0name=N'dbo', @level1type=N'TABLE',@level1name=N'cx_Navigation'

 81 GO

 82 

 83 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_NavType]  DEFAULT ((0)) FOR [NavType]

 84 GO

 85 

 86 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_Name]  DEFAULT ('') FOR [Name]

 87 GO

 88 

 89 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_Title]  DEFAULT ('') FOR [Title]

 90 GO

 91 

 92 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_SubTitle]  DEFAULT ('') FOR [SubTitle]

 93 GO

 94 

 95 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_LinkUrl]  DEFAULT ('') FOR [LinkUrl]

 96 GO

 97 

 98 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_SortID]  DEFAULT ((99)) FOR [SortID]

 99 GO

100 

101 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_IsLock]  DEFAULT ((0)) FOR [IsLock]

102 GO

103 

104 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_Remark]  DEFAULT ('') FOR [Remark]

105 GO

106 

107 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_ParentID]  DEFAULT ((0)) FOR [ParentID]

108 GO

109 

110 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_ClassList]  DEFAULT ('') FOR [ClassList]

111 GO

112 

113 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_ClassLayer]  DEFAULT ((1)) FOR [ClassLayer]

114 GO

115 

116 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_ChannelID]  DEFAULT ((0)) FOR [ChannelID]

117 GO

118 

119 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_ActionType]  DEFAULT ('') FOR [ActionType]

120 GO

121 

122 ALTER TABLE [dbo].[cx_Navigation] ADD  CONSTRAINT [DF_cx_Navigation_IsSystem]  DEFAULT ((0)) FOR [IsSystem]

123 GO

如果节点移动采用代码实现比较简单，但效率就相当低了，需要访问数据库多次。

于是我就想这采用数据库中使用递归的方式调用，结构问题出现了，在递归存储过程中不允许使用临时表。

总结以上遇到的问题于是我有了一下的解决方案代码：

 1 USE DB

 2 GO

 3 /****** Object:  StoredProcedure [dbo].[cx_ModifyNavigation]    Script Date: 10/23/2014 22:42:08 ******/

 4 SET ANSI_NULLS ON

 5 GO

 6 SET QUOTED_IDENTIFIER ON

 7 GO

 8 -- =============================================

 9 -- Author:        tommy duan

10 -- Create date: 2014-10-23

11 -- Description:    编辑导航

12 -- =============================================

13 CREATE PROCEDURE [dbo].[cx_ModifyNavigation]

14     -- Add the parameters for the stored procedure here

15     @ID    int,

16     @NavType    tinyint,

17     @Name    nvarchar(64),

18     @Title    nvarchar(128),

19     @SubTitle    nvarchar(128),

20     @LinkUrl    nvarchar(256),

21     @SortID    int,

22     @IsLock    bit,

23     @Remark    nvarchar(512),

24     @ParentID    int,

25     @ClassList    nvarchar(512),

26     @ClassLayer    int,

27     @ChannelID    int,

28     @ActionType    nvarchar(512),

29     @IsSystem    bit

30 AS

31 BEGIN

32     -- SET NOCOUNT ON added to prevent extra result sets from

33     -- interfering with SELECT statements.

34     SET NOCOUNT ON;

35     

36     

37     -- 前提：自己不可以修改自己为自己的子节点。

38     -- 当前节点被移到了自己的子节点下边(当前节点修改时，选中的父节点为自己之前的子节点)。

39     Declare @SelectNodeWasChildNode int;

40     Select @SelectNodeWasChildNode=COUNT(1) From cx_Navigation Where ClassList like '%,'+CAST(@ID as nvarchar(32))+',%' and ID=@ParentID;

41     

42     If @SelectNodeWasChildNode>0 

43     Begin

44         -- 查找旧父节点数据

45         Declare @OldParentID int;    

46         Declare @TempClassLayer int;

47         Declare @TempClassList nvarchar(512);

48         

49         Set @TempClassLayer=1;

50         Set @TempClassList=','+CAST(@ParentID as Nvarchar(32))+',';

51         

52         Select @OldParentID=ParentID From cx_Navigation Where ID=@ID;

53         

54         If @OldParentID>0 

55         Begin

56             Declare @OldClassLayer int;

57             Declare @OldClassList nvarchar(32);

58             

59             Select @OldClassLayer=ClassLayer,@OldClassList=ClassList From cx_Navigation Where ID=@OldParentID;

60             

61             Set @TempClassLayer=@OldClassLayer+1;

62             Set @TempClassList=@OldClassList+CAST(@ParentID as Nvarchar(32))+',';

63         End

64         

65         -- 提升被选中作为父节点的节点

66         Update cx_Navigation Set ParentID=@OldParentID,ClassList=@TempClassList,ClassLayer=@TempClassLayer

67         Where ID=@ParentID;

68         

69         -- 提升被选中作为父节点的节点的所有子节点。

70         Execute cx_ModifyNavigationChildren @ParentID;

71     End

72     

73     -- 修改节点

74     If @ParentID>0 

75     Begin

76         Select @ClassLayer=ClassLayer,@ClassList=ClassList From cx_Navigation Where ID=@ParentID;

77         Set @ClassLayer=@ClassLayer+1;

78         Set @ClassList=@ClassList+CAST(@ID as nvarchar(32))+',';

79     End

80     Else

81     Begin

82         Set @ClassLayer=1;

83         Set @ClassList=','+CAST(@ID as Nvarchar(32))+',';

84     End

85     

86     UPDATE [cx_Navigation]

87         SET [NavType] = @NavType,[Name] = @Name,[Title] = @Title,[SubTitle] = @SubTitle,[LinkUrl] = @LinkUrl

88           ,[SortID] = @SortID,[IsLock] = @IsLock,[Remark] = @Remark,[ParentID] = @ParentID,[ClassList] = @ClassList

89           ,[ClassLayer] = @ClassLayer,[ChannelID] = @ChannelID,[ActionType] = @ActionType,[IsSystem] = @IsSystem

90     WHERE ID=@ID;

91     

92     -- 修改自己的子节点

93     Execute cx_ModifyNavigationChildren @ID;

94 END

 

 

递归函数还没有解决不支持临时表的问题，我这样写可能效率不高。

 1 USE DB

 2 GO

 3 /****** Object:  StoredProcedure [dbo].[cx_ModifyNavigationChildren]    Script Date: 10/23/2014 22:43:49 ******/

 4 SET ANSI_NULLS ON

 5 GO

 6 SET QUOTED_IDENTIFIER ON

 7 GO

 8 

 9 -- =============================================

10 -- Author:        tommy duan

11 -- Create date: 2014-10-23

12 -- Description:    编辑导航

13 -- =============================================

14 CREATE PROCEDURE [dbo].[cx_ModifyNavigationChildren]

15     -- Add the parameters for the stored procedure here

16     @ParentID int

17 AS

18 Begin    

19     -- 验证信息是否存在

20     If Exists(SELECT ID From cx_Navigation Where ID=@ParentID)

21     Begin

22         Declare @ClassLayer int;

23         Declare @ClassList nvarchar(512);

24         

25         -- 获取父节点信息

26         SELECT @ClassLayer=ClassLayer,@ClassList=ClassList From cx_Navigation Where ID=@ParentID;

27         

28         -- 查找当前父节点在所有一级子节点，并修改他们的层次信息        

29         Declare @TempClassLayer int;

30         Declare @TempClassList nvarchar(512);

31         Declare @MaxRowNumber int;

32         Declare @Cursor int;

33         Declare @ID int;

34         Set @Cursor=0;

35         SELECT @MaxRowNumber=Count(1) From 

36         (

37             SELECT ID,ROW_NUMBER()Over(Order By ID) as RowNumber From cx_Navigation Where ParentID=@ParentID

38         ) As T10;

39         

40         While @Cursor<@MaxRowNumber

41         Begin

42             Set @Cursor=@Cursor+1;

43             Select @ID= T10.ID From (

44                 SELECT ID,ROW_NUMBER()Over(Order By ID) as RowNumber From cx_Navigation Where ParentID=@ParentID

45             ) as T10 Where T10.RowNumber=@Cursor;

46             If @ID IS NOT NULL 

47             Begin                 

48                 -- 修改子节点的ID列表及深度

49                 Set @TempClassLayer=@ClassLayer+1;

50                 Set @TempClassList=@ClassList+CAST(@ID as nvarchar(32))+',';

51                 

52                 Update cx_Navigation Set ClassLayer=@TempClassLayer,ClassList=@TempClassList Where ID=@ID;

53 

54                 -- 递归调用

55                 Execute cx_ModifyNavigationChildren @ID;

56             End

57         End

58     End        

59 End

还有其他什么解决方案吗?除了采用代码实现外。