SELECT id
  FROM  kategorie
  WHERE parent = 
  
exception 'Exception' with message 'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 3' in /srv/www/htdocs/ks0161/html/plugin/cfg.inc.php:146
Stack trace:
#0 /srv/www/htdocs/ks0161/html/plugin/cfg.inc.php(308): printTrace('You have an err...')
#1 /srv/www/htdocs/ks0161/html/inhalte/artikel.php(59): NMT::sqlDo('?  SELECT id?  ...')
#2 /srv/www/htdocs/ks0161/html/inhalte/artikel.php(46): getKatChildrenIDs(NULL)
#3 /srv/www/htdocs/ks0161/html/index.php(117): include('/srv/www/htdocs...')
#4 {main}