Finding difference of Hours between two dates

Question

I need logic to find the difference of number of hours between any two dates excluding saturdays & sundays. Please provide PLSQL code.

Answer 1

my dear
this is the pl/sql to create on db.
| | This function it will created on the data if you like.
| | the input parameter for this function is two date .
| | you can add more feature on it because turn it felixable eg.
| | you can execlude varaible days from paramteres....
CREATE OR REPLACE FUNCTION GET_HOURS(P_FROM_DATE IN DATE ,
P_TO_DATE IN DATE DEFAULT SYSDATE ,
P_EXECLUDE IN VARCHAR2 DEFAULT '17' ) RETURN NUMBER IS
V_CURR_DATE DATE := P_FROM_DATE ;
V_ALL_DAYS NUMBER := 0 ;
V_NET_HOURS NUMBER := 0 ;
V_FROM_JUL NUMBER := TO_CHAR(P_FROM_DATE,'J');
V_TO_JUL NUMBER := TO_CHAR(P_TO_DATE,'J');
BEGIN
FOR R IN V_FROM_JUL..V_TO_JUL LOOP
IF INSTR(P_EXECLUDE,TO_CHAR(V_CURR_DATE,'D')) = 0 THEN
V_ALL_DAYS := V_ALL_DAYS + 1 ;
END IF;
V_CURR_DATE := V_CURR_DATE+ 1 ;
END LOOP;
V_NET_HOURS := V_ALL_DAYS * 24 ;
RETURN(V_NET_HOURS);
END;
-- this is for test senario
SELECT GET_HOURS(SYSDATE-30) FROM DUAL ;
SELECT GET_HOURS(SYSDATE-30,SYSDATE,'127') FROM DUAL;
SELECT GET_HOURS(SYSDATE-30,SYSDATE,'0') FROM DUAL; -- to execlude zero days.