Query to get the Number of Years, Months and Days between two Given Dates

SELECT

          TRUNC(MONTHS_BETWEEN  (LEAST(NVL(:P_TO_DATE,SYSDATE),SYSDATE), NVL(:START_DATE,:START_DATE))/12)  Y

         

         ,TRUNC(MONTHS_BETWEEN  (LEAST(NVL(:P_TO_DATE,SYSDATE),SYSDATE), NVL(:START_DATE,:START_DATE)))  -

          TRUNC(MONTHS_BETWEEN  (LEAST(NVL(:P_TO_DATE,SYSDATE),SYSDATE), NVL(:START_DATE,:START_DATE))/12)*12 M

        

         ,TRUNC((MONTHS_BETWEEN  (LEAST(NVL(:P_TO_DATE,SYSDATE),SYSDATE), NVL(:START_DATE,:START_DATE))   -

          TRUNC(MONTHS_BETWEEN   (LEAST(NVL(:P_TO_DATE,SYSDATE),SYSDATE), NVL(:START_DATE,:START_DATE)))) * 30 )  D

from dual