MySql Error: 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 'WHERE board_case.sites like "%union%" AND CONCAT(",",experts,",") like "%,189,%"' at line 1 Query : SELECT board_case.*,experts.name AS expert_name, experts.position AS expert_position,experts.list_thumbnail as expert_list_thumbnail FROM board_case LEFT JOIN experts ON experts.no = WHERE board_case.sites like "%union%" AND CONCAT(",",experts,",") like "%,189,%" ORDER BY board_case.is_notice desc, board_case.no desc LIMIT 16