Try
Select top 100000
Srm_RESOURCES.id,
Srm_RESOURCES.unique_name,
Srm_RESOURCES.full_name,
prcalendar.Hours_per_day,
prcalendar.prname
from
srm_RESOURCES,
PRJ_RESOURCES,
prcalendar
where
prcalendar.prid = PRJ_RESOURCES.prcalendarid and PRJ_RESOURCES.prid = SRM_RESOURCES.id
/* and prcalendar.Hours_per_day <> 7.5 */
Order by Srm_RESOURCES.full_name