sp_MSenumchangeslightweight (Transact-SQL MetaData) Definition

Please note: that the following source code is provided and copyrighted by Microsoft and is for educational purpose only.
The meta data is from an SQL 2012 Server.

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Definition:

sys.sp_MSenumchangeslightweight(uniqueidentifier @pubid
, int @tablenick
, uniqueidentifier @lastrowguid
, int @maxrows)

MetaData:

 create procedure sys.sp_MSenumchangeslightweight  
    @pubid            uniqueidentifier,  
    @tablenick        int,  
    @lastrowguid    uniqueidentifier,  
    @maxrows         int  
as  
    set nocount on  
  
    declare @retcode     int  
    declare @postfix    nchar(32)  
    declare @procname    sysname  
    declare @pubnick    int  
    declare @METADATA_TYPE_InsertLightweight tinyint  
    declare @METADATA_TYPE_UpdateLightweight tinyint  
    declare @maxint  int  
  
  
    --  do permission checking  
    exec @retcode = sys.sp_MSreplcheck_subscribe  
    if @retcode<>0 or @@ERROR<>0 return (1)  
  
    set @METADATA_TYPE_InsertLightweight= 7   
    set @METADATA_TYPE_UpdateLightweight= 8  
    set @maxint= 2147483647  
  
    if 0 = @maxrows  
    begin  
        set @maxrows= @maxint  
    end  
      
    select @pubnick = sync_info from dbo.MSmerge_replinfo where repid = @pubid  
  
    select @postfix= procname_postfix  
        from dbo.sysmergearticles   
        where pubid = @pubid and nickname = @tablenick  
      
    set @procname= quotename('MSmerge_lws_sp_multi_' + @postfix)  
  
    --  Step 1: Set the sync_cookie value for the updates/inserts that will be enumerated.  
    --             That sync_cookie will be reset upon downloading the proxied metadata  
    --            from that publisher.  
    --  Step 2: Enumerate all those rows whose sync_cookie has just been set.  
    --   
  
    --  Step 1  
    update dbo.MSmerge_rowtrack  
        set sync_cookie= @pubnick  
        where tablenick = @tablenick and  
              rowguid > @lastrowguid and  
              changetype in (@METADATA_TYPE_InsertLightweight,  
                               @METADATA_TYPE_UpdateLightweight)  
  
    --  Step 2  
    exec @retcode= @procname   
                        @action= 2,   
                        @pubnick= @pubnick,   
                        @rowguid= @lastrowguid,  
                        @maxrows= @maxrows  
    if @@error <> 0 or @retcode <> 0 return 1  
  
    return 0