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。