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 'Geef','weg'','Verkooptechniek','iets') AND adv_status = 'Active' ORDER BY rand()' at line 1
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SELECT * FROM advertisement WHERE adv_keyword IN (''Geef','weg'','Verkooptechniek','iets') AND adv_status = 'Active' ORDER BY rand() LIMIT 0,1