Select Precio_regular into #Tempo from planes_servicios where d.id_plan = 'PLANMSTRO'
Update planes_servicios O set o.precio_regular =
(Select Precio_regular from planes_servicios where isnull(IN_PLAN, '') = 'F' and Isnull(RECLAMABLE, '') = 'F' and
exists (select h.precio_regular from #tempo))