Saturday, November 8, 2014

How to call one function in another function ?

SQL> create or replace function fun_two( num in number)
  2  return number
  3  as
  4  val number;
  5  begin
  6  val:=num+500;
  7  return val;
  8  end;
  9  /

Function created.

SQL> create or replace function fun_one( num in number)
  2  return number
  3  as
  4  val number;
  5  begin
  6  val:=fun_two(num);
  7  return val;
  8  end;
  9  /

Function created.

SQL> select fun_one(10) from dual;

FUN_ONE(10)
-----------
        510

SQL> select fun_one(30) from dual;

FUN_ONE(30)
-----------
        530

***********************************



SQL> declare
  2       function bob(x number) return number is
  3       begin
  4         return x*x;
  5       end;
  6       function fred(x number) return number is
  7       begin
  8         return x+bob(x);
  9       end;
 10     begin
 11      dbms_output.put_line('Value: '||to_char(fred(5),'fm9999'));
 12    end;
 13  /
Value: 30

PL/SQL procedure successfully completed.

SQL>

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