error running sql '
            select distinct 
		klasse.klasse as klasse_id,
		klasse.klasse as klasse_name,
		klasse.benennung as beschreibung
            
            from klasse 
            
            where klasse.jahr=1999 
            
            order by klasse.sort_nr
        ': Expression #1 of ORDER BY clause is not in SELECT list, references column 'seiberer.klasse.sort_nr' which is not in SELECT list; this is incompatible with DISTINCT