Select Day count Excluding Saturday and Sunday for the Date range

SELECT
COUNT(DECODE(TO_CHAR(TO_DATE('Start Date','DD/MM/YYYY')+LEVEL-1,'D'),7,NULL,1,NULL,1)) FROM DUAL
CONNECT BY LEVEL <= TO_DATE('End Date','DD/MM/YYYY') -TO_DATE('Start Date','DD/MM/YYYY')+1;