Lbass,
Thanks as always. I am indeed working on Oracle. Sorry for omitting that in the original post. Working off your suggestion we found the following which works well for limiting the record dates through add command.
FOR YESTERDAY:
"INCIDENTSM1"."OPEN_TIME" between new_time(TRUNC(current_date-1),'CST','GMT') and new_time(TRUNC(current_date),'CST','GMT')
FOR MONTH:
"INCIDENTSM1"."OPEN_TIME" between new_time(TRUNC(current_date, 'MM'),'CST','GMT') and new_time(TRUNC(current_date),'CST','GMT')
FOR YEAR:
"INCIDENTSM1"."OPEN_TIME" between new_time(TRUNC(current_date, 'YYYY'),'CST','GMT') and new_time(TRUNC(current_date),'CST','GMT')
As you pointed out in your post, SYSDATE is interchangable with current_date in this instance.
Thanks very much for your help!