You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'for-sale and session_id = "u1403u23n1tmma2ne4spad3su4"' at line 1: SELECT * FROM reservas   WHERE propiedad_fk = villas-for-sale and session_id = "u1403u23n1tmma2ne4spad3su4"