sp_MSispkupdateinconflict (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_MSispkupdateinconflict(int @pubid
, int @artid
, varbinary @bitmap)

MetaData:

 create procedure sys.sp_MSispkupdateinconflict (  
    @pubid int  
    ,@artid int  
    ,@bitmap varbinary(4000)  
)  
as  
begin  
    declare @retcode int  
        ,@tabname sysname  
        ,@tabid int  
        ,@indid int  
        ,@indkey int  
        ,@key sysname  
        ,@colid int  
        ,@isset int  
        ,@artcol int  
        ,@bytepos int  
        ,@bitpos int  
  
    --   
    --  security check  
    --   
    exec @retcode = sp_MSreplcheck_publish  
    if @@ERROR != 0 or @retcode != 0  
        return -1  
    --   
    --  initalize and validate  
    --   
    select @tabid = objid  
        ,@indkey = 1  
        ,@artcol = 0  
    from dbo.sysarticles  
    where (artid = @artid) and (pubid = @pubid)  
  
    if (@tabid is null)  
    begin  
        raiserror(20046, 16, -1)  
        return -1  
    end  
      
    select @tabname = QUOTENAME(schema_name(OBJECTPROPERTY(@tabid, 'SchemaId'))) collate database_default   
            + N'.' + QUOTENAME(object_name( @tabid )) collate database_default  
  
    --   
    --  get the Primary Key Index  
    --   
    select @indid = i.indid   
    from dbo.sysindexes i   
    where ((i.status & 2048) != 0) and (i.id = @tabid)  
    if (@indid is null)  
    begin  
        raiserror(21750, 16, -1, @tabname)  
        return -1  
    end  
      
    --   
    --  create an enumeration of all the columns that are part of PK  
    --   
    create table #pkcoltab(pkindex int identity, keyname sysname collate database_default not null)  
    while (@indkey <= 16)  
    begin  
        select @key = index_col( @tabname, @indid, @indkey )  
        if (@key is null)  
            break  
        else  
            insert into #pkcoltab(keyname) values(@key)  
  
        select @indkey = @indkey + 1  
    end  
  
    --   
    --  now walk through each article col and if it is  
    --  a part of PK, then check if the update bitmap bit   
    --  corresponding to any article column is set  
    --   
    DECLARE #hCColid CURSOR LOCAL FAST_FORWARD FOR   
        select column_id, [name] from sys.columns   
        where object_id = @tabid order by column_id asc  
  
    OPEN #hCColid  
    FETCH #hCColid INTO @colid, @key  
    WHILE (@@fetch_status != -1)  
    begin  
        exec @isset = sys.sp_isarticlecolbitset @colid, @artid  
        if (@isset != 0)  
        begin  
        --   
        --  this column is part of the article  
        --   
        select @artcol = @artcol + 1  
        if exists (select * from #pkcoltab where keyname = @key)  
        begin  
            --   
            --  this column is part of PK  
            --   
            select  @bytepos = 1 + (@artcol-1) / 8   
                ,@bitpos = power(2, (@artcol-1) % 8 )  
  
            --   
            --  if the update bitmap has bit set then  
            --  then it is a PK update  
            --   
            if ((substring(@bitmap, @bytepos, 1) & @bitpos) = @bitpos)  
                return 1  
        end  
        end  
        --   
        --  get the next column  
        --   
        FETCH #hCColid INTO @colid, @key  
    end  
    CLOSE #hCColid  
    DEALLOCATE #hCColid  
    drop table #pkcoltab  
  
    --   
    --  if we have reached here then it mean the update does not  
    --  affect PK columns, cleanup and return  
    --   
    return 0  
end