<?php $sql = "SELECT s_id, s_nachname, s_vorname, s_adresse, mk_id, mk_sid, mk_kid, mk_bez FROM mk LEFT JOIN schueler ON mk_sid = s_id WHERE mk_id = 2"; ?>
<?php $sql = "SELECT s_id, s_nachname, s_vorname, s_adresse, mk_id, mk_sid, mk_kid, mk_bez FROM mk , schueler WHERE mk_sid = s_id AND mk_id = 2"; ?>
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