Error en la consulta limitada: SELECT id, id_origen, categoria, tipo, origen, archivo, titulo, resumen, texto, autor, fecha_publicacion, tags FROM videos WHERE revisado='si' ORDER BY id DESC LIMIT -18,18. Mysql dijo: 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 '-18,18' at line 1