How To Define a Sub Function?
A sub function is a function defined and used inside another procedure or function. You need to define a sub function in the declaration part of the enclosing procedure or function. Sub function definition starts with the FUNCTION key word. Here is a sample script showing you how to define and use a sub function:SQL> CREATE OR REPLACE PROCEDURE SUM_TEST AS2 FUNCTION MY_SUM(X NUMBER, Y NUMBER)3 RETURN NUMBER AS4 BEGIN5 RETURN X + Y;6 END;7 BEGIN8 DBMS_OUTPUT.PUT_LINE(’3 + 5 = ‘ || TO_CHAR(MY_SUM(3,5)));9 DBMS_OUTPUT.
