Check Subdomein Got error 'empty (sub)expression' from regexp in SELECT id,sleutel,url,synoniemen,taalpar FROM subdomein WHERE ((kenmerk REGEXP 'ameland') ) AND ((sleutel regexp '(ballumerhoeve|tree||auf|der|karte!)') OR (synoniemen regexp '(ballumerhoeve|tree||auf|der|karte!)')) AND ((talen&2)>0) ORDER BY sleutel DESC;
Ballumerhoeve, Tree auf der Karte aufAmeland.de