mssqlserver 无限级分类存储过程的应用

建成的存储过程

查询结果截图

用到的代码

if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Tb_Column]') and OBJECTPROPERTY(id, N'IsUserTable') = 1)
drop table [dbo].[Tb_Column]
GO

Create TABLE [dbo].[Tb_Column] (
     [Column_ID] [int] NOT NULL ,
     [Column_Name] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NULL ,
     [Parent_ID] [int] NULL ,
     [Column_Path] [nvarchar] (1000) COLLATE Chinese_PRC_CI_AS NULL ,
     [Column_Depth] [int] NULL ,
     [Column_Order] [int] NULL ,
     [Column_Intro] [nvarchar] (1000) COLLATE Chinese_PRC_CI_AS NULL 
) ON [PRIMARY]
GO

Alter TABLE [dbo].[Tb_Column] ADD 
     CONSTRAINT [DF_Tb_Column_Parent_ID] DEFAULT (0) FOR [Parent_ID],
     CONSTRAINT [DF_Tb_Column_Column_Depth] DEFAULT (0) FOR [Column_Depth],
     CONSTRAINT [DF_Tb_Column_Column_Order] DEFAULT (0) FOR [Column_Order],
     CONSTRAINT [PK_Tb_Column] PRIMARY KEY   CLUSTERED 
     (
         [Column_ID]
     )   ON [PRIMARY] 
GO


exec sp_addextendedproperty N'MS_Description', N'分类深度(默认值0）', N'user', N'dbo', N'table', N'Tb_Column', N'column', N'Column_Depth'
GO
exec sp_addextendedproperty N'MS_Description', N'int 主键（注：非标识）', N'user', N'dbo', N'table', N'Tb_Column', N'column', N'Column_ID'
GO
exec sp_addextendedproperty N'MS_Description', N'分类说明', N'user', N'dbo', N'table', N'Tb_Column', N'column', N'Column_Intro'
GO
exec sp_addextendedproperty N'MS_Description', N'分类名称', N'user', N'dbo', N'table', N'Tb_Column', N'column', N'Column_Name'
GO
exec sp_addextendedproperty N'MS_Description', N'排序(默认值0)', N'user', N'dbo', N'table', N'Tb_Column', N'column', N'Column_Order'
GO
exec sp_addextendedproperty N'MS_Description', N'分类路径', N'user', N'dbo', N'table', N'Tb_Column', N'column', N'Column_Path'
GO
exec sp_addextendedproperty N'MS_Description', N'父分类ID（默认值0）', N'user', N'dbo', N'table', N'Tb_Column', N'column', N'Parent_ID'


GO

Create PROCEDURE sp_Column_Insert
(
@Parent_ID int,
@Column_Name nvarchar(50),
@Column_Intro nvarchar(1000)
)
AS
Declare @Err As int
Set @Err=0

Begin Tran
--通过现有记录获取栏目ID
Declare @Column_ID As int
Declare @Column_Depth As int
Select @Column_ID = Max(Column_ID) From Tb_Column
IF @Column_ID Is Not Null
Set @Column_ID = @Column_ID+1
Else
Set @Column_ID = 1

--判断是否是顶级栏目，设置其Column_Path和Column_Order
Declare @Column_Path As nvarchar(1000)
Declare @Column_Order As int
IF @Parent_ID = 0
Begin
Set @Column_Path =Ltrim(Str(@Column_ID))
Select @Column_Order = Max(Column_Order) From Tb_Column
IF @Column_Order Is Not Null
Set @Column_Order = @Column_Order + 1
Else --如果没有查询到记录，说明这是第一条记录
Set @Column_Order = 1

--深度
Set @Column_Depth = 1
End
Else
Begin
--获取父节点的路径和深度
Select @Column_Path = Column_Path ,@Column_Depth = Column_Depth From Tb_Column Where 

Column_ID=@Parent_ID
IF @Column_Path Is Null
Begin
Set @Err = 1
Goto theEnd
End

--获取同父节点下的最大序号
Select @Column_Order = Max(Column_Order) From Tb_Column Where Column_Path like 

''+@Column_Path+'|%'   or Column_ID = @Parent_ID
IF @Column_Order Is Not Null --如果序号存在，那么将该序号后的所有序号都加1
Begin 
--更新当前要插入节点后所有节点的序号
Update Tb_Column Set Column_Order = Column_Order +1 Where Column_Order 

>@Column_Order
--同父节点下的最大序号加上1，构成自己的序号
Set @Column_Order = @Column_Order + 1
End 
Else
Begin
Set @Err=1
Goto theEnd
End

--父节点的路径加上自己的ID号，构成自己的路径
Set @Column_Path = @Column_Path + '|' + Ltrim(Str(@Column_ID))

--深度
Set @Column_Depth = @Column_Depth+1

End

Insert Into Tb_Column(Column_ID,Column_Name,Parent_ID,Column_Path,Column_Depth,Column_Order,Column_Intro) 

Values(@Column_ID,@Column_Name,@Parent_ID,@Column_Path,@Column_Depth,@Column_Order,@Column_Intro)

IF @@Error<>0 
Begin
Set @Err=1
Goto theEnd
End

--更新当前记录之后的记录的ORDER
--Update Tb_Column Set Column_Order = Column_Order+1 Where Column_Order   > @Column_Order 

theEnd:
IF @Err=0
Begin
Commit Tran
Return @Column_ID
End
Else
Begin
     Rollback Tran
Return 0
End
GO


Create PROCEDURE sp_Column_Delete
(
@Column_ID int
)
AS
Declare @Err As int
Set @Err = 0
Begin Tran
--首先查询该节点下是否有子节点
Select Column_ID From Tb_Column Where Parent_ID = @Column_ID
IF @@RowCount<>0
     Begin
     Set @Err = 1
     Goto theEnd
     End

--获取该节点的Column_Order,为了删除后整理其他记录的顺序
Declare @Column_Order As int
Select @Column_Order = Column_Order From Tb_Column Where Column_ID = @Column_ID
IF @Column_Order Is NUll
     Begin
       Set @Err =2
       Goto theEnd
     End 

--更新其他记录的Column_Order
Update Tb_Column Set Column_Order = Column_Order -1 Where Column_Order >@Column_Order 
IF @@Error<>0
     Begin
       Set @Err =3
       Goto theEnd
     End 

--删除操作
Delete From Tb_Column Where Column_ID=@Column_ID
IF @@Error<>0
     Begin
       Set @Err =4
       Goto theEnd
   End 

--更新其他记录的Column_ID
--Update Tb_Column Set Column_ID= Column_ID - 1 Where Column_ID >@Column_ID 
--IF @@Error<>0
--     Begin
--       Set @Err =5
--       Goto theEnd
--     End 

theEnd:
IF @Err = 0 
     Begin
       Commit Tran
       Return 0 --删除成功
     End
Else
     Begin
       IF @Err=1
   Begin
       Rollback Tran
       Return 1 --有子节点
End
       Else
Begin
       Rollback Tran
       Return 2--未知错误
End
     End
GO



Create PROCEDURE sp_Column_Update
(
@Column_ID int,
@Parent_ID int,
@Column_Name nvarchar(50),
@Column_Intro nvarchar(1000)
)
AS
Declare @Err As int
Set @Err=0

Begin Tran

--获取修改前的：Parent_ID,Column_Depth,Column_Order
Declare @oParent_ID As int
Declare @oColumn_Depth As int
Declare @oColumn_Order As int
Declare @oColumn_Path As nvarchar(1000)

Select @oParent_ID = Parent_ID, @oColumn_Depth = Column_Depth,@oColumn_Order = Column_Order, @oColumn_Path = Column_Path   From Tb_Column Where Column_ID = @Column_ID
IF @oParent_ID Is Null
     Begin
     Set @Err = 1
     Goto theEnd
     End

--如果父ID没有改变，则直接修改栏目名和栏目简介
IF @oParent_ID = @Parent_ID
     Begin
     Update Tb_Column Set Column_Name = @Column_Name,Column_Intro = @Column_Intro Where Column_ID = @Column_ID
     IF @@Error <> 0
     Set @Err = 2
     Goto theEnd
     End


Declare @nColumn_Path As nvarchar(1000)
Declare @nColumn_Depth As int
Declare @nColumn_Order As int

--获取当前节点作为父节点所包含的节点数[包括自身] 注：如果返回 “1” 说明是单节点
Declare @theCount As int
Select @theCount = Count(Column_ID) From Tb_Column Where Column_ID=@Column_ID or Column_Path like ''+@oColumn_Path+'|%'
IF @theCount Is Null
Begin
     Set @Err = 3
     Goto theEnd
End 

IF @Parent_ID=0 --如果是设置为顶级节点，将节点设置为最后一个顶级节点
Begin
--Print '设置为顶级栏目'
Set @nColumn_Path = Ltrim(Str(@Column_ID))
Set @nColumn_Depth =1

Select @nColumn_Order = Max(Column_Order) From Tb_Column
IF @nColumn_Order Is NULL
                   Begin
      Set @Err = 4
      Goto theEnd
      End 

Set @nColumn_Order = @nColumn_Order - @theCount + 1

--更新三部分 1 节点本身 2 所有子节点 2 本树更改之前的后面记录的顺序
--Print '更新本栏目之前位置后面的所有栏目[不包括本栏目下的子栏目]的：Column_Order'
Update Tb_Column Set Column_Order = Column_Order-@theCount Where (Column_Order >@oColumn_Order) And (Column_Path Not like ''+@oColumn_Path+'|%')
IF @@Error <> 0
     Begin
     Set @Err = 7
     Goto theEnd
     End

--Print '更新本栏目的：Parent_ID,Column_Path,Column_Depth,Column_Order,Column_Name,Column_Intro'
Print 'Order : '+Ltrim(Str(@nColumn_Order))
Update Tb_Column Set Parent_ID=@Parent_ID,Column_Path = @nColumn_Path,Column_Depth = @nColumn_Depth,Column_Order = @nColumn_Order, Column_Name = @Column_Name,Column_Intro = @Column_Intro Where Column_ID = @Column_ID
IF @@Error <> 0
     Begin
     Set @Err = 5
     Goto theEnd
     End

--Print '更新本栏目下的所有子栏目的：Column_Path,Column_Depth,Column_Order'
              Update Tb_Column Set Column_Path = Replace(Column_Path,@oColumn_Path,@nColumn_Path),Column_Depth = Column_Depth + (@nColumn_Depth-@oColumn_Depth),Column_Order = Column_Order+( @nColumn_Order-@oColumn_Order) Where Column_Path like ''+@oColumn_Path+'|%'
IF @@Error <> 0
     Begin
     Set @Err = 6
     Goto theEnd
     End


End 
Else
Begin
--获取未来父节点的相关信息,并设置本节点的相关值
Select @nColumn_Depth = Column_Depth,@nColumn_Path = Column_Path From Tb_Column Where Column_ID = @Parent_ID
IF @nColumn_Depth Is   NULL or @nColumn_Path Is Null
       Begin
       Set @Err = 8
       Goto theEnd
       End 
Set @nColumn_Depth = @nColumn_Depth +1
Select @nColumn_Order =Max(Column_Order) From Tb_Column Where Column_ID = @Parent_ID or   Column_Path like ''+@nColumn_Path+'|%'
IF @nColumn_Order Is   NULL
       Begin
       Set @Err = 9
       Goto theEnd
       End 

Set @nColumn_Path = @nColumn_Path +'|'+ Ltrim(Str(@Column_ID))

IF @nColumn_Order = @oColumn_Order+1 --如果新的父节点是原来位置上端最近一个兄弟,则所有节点的顺序都不改变
                     Begin
Update Tb_Column Set Parent_ID=@Parent_ID,Column_Path = @nColumn_Path,Column_Depth = @nColumn_Depth, Column_Name = @Column_Name,Column_Intro = @Column_Intro Where Column_ID = @Column_ID
IF @@Error <> 0
     Begin
     Set @Err = 10
     Goto theEnd
     End
        End

Set   @nColumn_Order = @nColumn_Order + 1 

--更新三部分 1 本树更改之前的后面（或前面）记录的顺序 1 节点本身   3 所有子节点
--分为向上移或象下移
--Print '更新本栏目之前位置后面的所有栏目[或者本栏目之后位置]   [不包括本栏目下的子栏目]的：Column_Order'
IF @nColumn_Order < @oColumn_Order
Begin
Update Tb_Column Set Column_Order = Column_Order+@theCount Where Column_Order<@oColumn_Order   And Column_Order >=@nColumn_Order And (Column_Path Not like ''+@oColumn_Path+'|%') And Column_ID<>@Column_ID
IF @@Error <> 0
         Begin
         Set @Err = 12
         Goto theEnd
         End
End
Else
Begin
Update Tb_Column Set Column_Order = Column_Order-@theCount Where Column_Order >@oColumn_Order And Column_Order<@nColumn_Order   And (Column_Path Not like ''+@oColumn_Path+'|%') And Column_ID<>@Column_ID
IF @@Error <> 0
         Begin
         Set @Err = 13
         Goto theEnd
         End
End

--Print '更新本栏目的：Parent_ID,Column_Path,Column_Depth,Column_Order,Column_Name,Column_Intro'
Print 'Order : '+Ltrim(Str(@nColumn_Order))
IF @nColumn_Order > @oColumn_Order
Set @nColumn_Order = @nColumn_Order - @theCount
Update Tb_Column Set Parent_ID=@Parent_ID,Column_Path = @nColumn_Path,Column_Depth = @nColumn_Depth,Column_Order = @nColumn_Order, Column_Name = @Column_Name,Column_Intro = @Column_Intro Where Column_ID = @Column_ID
IF @@Error <> 0
     Begin
     Set @Err = 10
     Goto theEnd
     End

--Print '更新本栏目下的所有子栏目的：Column_Paht,Column_Depth,Column_Order'
              Update Tb_Column Set Column_Path = Replace(Column_Path,@oColumn_Path,@nColumn_Path),Column_Depth = Column_Depth + (@nColumn_Depth-@oColumn_Depth),Column_Order = Column_Order+(@nColumn_Order-@oColumn_Order) Where Column_Path like ''+@oColumn_Path+'|%'
IF @@Error <> 0
     Begin
     Set @Err = 11
     Goto theEnd
     End
End

theEnd:
IF @Err<>0 --如果有错误则返回错误号
    Begin
    Rollback Tran
    Return @Err
    End
Else      --如果没有错误就返回0
    Begin
    Commit Tran
    Return 0
    End




Create PROCEDURE sp_Column_List 
AS
Select Column_ID, Column_Name, Parent_ID, Column_Path, Column_Depth, 
       Column_Order, Column_Intro
FROM Tb_Column
orDER BY Column_Order
GO

--下面是两个执行的例子
exec sp_Column_List
exec sp_Column_Insert 9,"中国新闻8","zhoguoxinwen1"