Get synonym definitions for all databases in server

If you want to audit your enviroment to look at all your synonyms and see where they are pointing, you can use exec sys.sp_MSforeachdb to loop through databases, and even filter. It will save some coding. However, my research indicates it is probably a bad practice to rely on this undocumented function as it may have issues not forseen and fully tested.

Additionally, support may drop for it in the future. I recreated what I needed with a cursor to obtain all the synonym definitions into a temp table and display results.:

/*
    create temp table for holding synonym definitions & list of DB 
    */

    if object_id('tempdb..#dblist') is not null
        drop table #dblist;
    select
        * 
    into #dblist
    from
        sys.databases
    where
        name not in ('master', 'tempdb', 'model', 'msdb')
        and State_desc = 'ONLINE'
        and Is_In_Standby = 0
    if object_id('tempdb..#temp') is not null
        drop table #temp;

    create table #temp
        (
            db_name               sysname
           ,object_id             int
           ,name                  sysname
           ,base_object_name      sysname
           ,server_name_hardcoded as case
                when base_object_name like '%ThisDatabaseIsOkToHardCode%' 
                then 0
                when len(base_object_name) 
                      - len(replace(base_object_name, '.', '')) > 2 
                then 1
                else 0
            end
        )

    go

    declare @DbName sysname
    declare @XSQL varchar(max)
    declare @CompleteSQL varchar(max)
    declare db_cursor cursor fast_forward read_only local for select
             name
         from
             #dblist
    open db_cursor
    fetch next from db_cursor into @DbName;

    while @@fetch_status = 0
    begin
        set @XSQL = '
                    insert into #temp 
                    ( db_name ,object_id ,name,base_object_name ) 
                    select
                        db_name()
                        ,s.object_id
                        ,s.name
                        ,s.base_object_name 
                    from 
                        sys.synonyms s
                    '
        set @CompleteSQL = 'USE ' + @DbName 
                            + '; EXEC sp_executesql N''' 
                            + @XSQL + '''';
        exec (@CompleteSQL)
        fetch next from db_cursor into @DbName;
    end

    close db_cursor
    deallocate db_cursor
    go 
    select 
        * 
    from 
        #temp t