SELECT count(distinct cle4) FROM zcasual WHERE REGEXP '[[:<:]]Sweat[[:>:]]' AND (prix>=1) AND cle1 REGEXP '[[:<:]]HOMME[[:>:]]' 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 'REGEXP '[[:<:]]Sweat[[:>:]]' AND (prix>=1) AND cle1 REGEXP '[[:<:]]HOMME[[:>:]]'' at line 1