ERROR :
SELECT com.id_comentario, com.fecha, com.mas_gusto AS comentario, u.nombre, IF(u.idioma = 'es',1,IF(u.idioma = 'es' AND 'es' = 'ca',2, 3)) AS orden_idioma FROM mcom_comentario com INNER JOIN mres_reserva res ON res.id_reserva = com.id_reserva LEFT JOIN mu_usuario u ON u.id = res.id_usuario WHERE res.id_alojamiento in ( ) AND com.mas_gusto <> '' AND com.habilitado = 1 ORDER BY orden_idioma ASC, com.fecha DESC LIMIT 0, 3