Knobelaufgabe

  select distinct
      dd02t~tabname,
      t002~spras,
      case when spras = ddlanguage then 'X'
      end as translation_exists
  from dd02t
  join t002
    on 1 = 1
   where dd02t~as4local = 'A'
     and dd02t~tabname in @s_table
   group by tabname, spras, ddlanguage
  into table @data(table_translations).

  delete adjacent duplicates from table_translations comparing tabname spras.
  move-corresponding table_translations to ct_data.