|
SQL>
SQL> SET ECHO ON
SQL> SET SERVEROUTPUT ON
SQL> DECLARE
2 test INTEGER;
3 BEGIN
4 IF test IS NULL THEN
5 DBMS_OUTPUT.PUT_LINE('The variable TEST is null.');
6 END IF;
7
8 test := 1;
9 DBMS_OUTPUT.PUT_LINE('TEST = ' || TO_CHAR(test));
10
11 IF test IS NOT NULL THEN
12 DBMS_OUTPUT.PUT_LINE('The variable TEST is NOT null.');
13 END IF;
14 END;
15 /
The variable TEST is null.
TEST = 1
The variable TEST is NOT null.
PL/SQL procedure successfully completed.
SQL>
SQL>
|