ERP基础档案管理模块中实现多级分类档案ID号自动编码技术(V1.0)

    本存储过程实现了多级分类档案ID号自动编码技术,本版本(V1.0)现在只实现每级3位的编码,

本版本的特点是:

n          可以根据不同的数据库表产生不同的编码,达到通用化

n          调用时通过指定iIsSubNode要产生的节点编码是否是子结点还是兄弟节点来生成对应编码

进行调用本存储过程时需要注意的是需要传递节点的层次(或是叫节点的深度)

另外下一个版本(V2.0)将根据用户自定义每级长度来实现更灵活的自动编码技术。

CREATE procedure prcIDAutoGen

@vSourceID varchar(30),

@iDepth int,

@iIsSubNode int,

@Table varchar(20),

@vIncrement varchar(30) output

as

begin

declare @iLen int

declare @vTempID varchar(30)

declare @SQLString nvarchar(500)

if @iIsSubNode =1

begin

 set @iDepth=@iDepth+1

 set @iLen=@iDepth*3

 set @SQLString=N'select vID from '+@Table +' where vID = '''+ltrim(rtrim(@vSourceID))+''''

 exec(@SQLString)

 if @@rowcount > 0

 begin

  select @vSourceID as vID into #t

  set @SQLString=N'insert #t select vID from '+@Table +' where vParentID in (select vID from #t)  and vID not in (select vID from #t) and iDepth=@iDepth'

  exec sp_executesql @SQLString,N'@iDepth int',@iDepth

  if @@rowcount > 0

  begin

   set @SQLString=N'select    @vTempID =isnull(max(vID),''0'') from #t'

   exec sp_executesql @SQLString,N'@vTempID varchar(30) output',@vTempID  output      

   set @SQLString='select @vIncrement=right(''000''+cast((cast(substring(@vTempID,1,@iLen) as decimal(30,0))+1)as varchar),@iLen)'

   exec sp_executesql @SQLString,N'@vIncrement varchar(30) output,@vTempID varchar(30),@iLen int',@vIncrement out,@vTempID,@iLen

  end

  else

  begin

   select          @vIncrement=ltrim(rtrim(@vSourceID))+'001'

  end

 end

 else

 begin

  select @vIncrement='001'

 end

end

else

begin

 set @iLen=len(ltrim(rtrim(@vSourceID)))

 set @SQLString=N'select vID from '+@Table +' where vID = '''+ltrim(rtrim(@vSourceID))+''''

 exec(@SQLString)

 if @@rowcount > 0

 begin

   set @SQLString=N'select  @vTempID =isnull(max(vID),''0'') from '+@Table+' where vID in (select vID from '+@Table+' where iDepth=@iDepth)'

   exec sp_executesql @SQLString,N'@vTempID varchar(30) output,@iDepth int',@vTempID  output,@iDepth    

   set @SQLString='select @vIncrement=right(''000''+cast((cast(substring(@vTempID,1,@iLen) as decimal(30,0))+1)as varchar),@iLen)'

   exec sp_executesql @SQLString,N'@vIncrement varchar(30) output,@vTempID varchar(30),@iLen int',@vIncrement out,@vTempID,@iLen

 end

 else

 begin

   select @vIncrement='001'

 end

end

end