Do simple calculation by using dual : dual « Introduction « Oracle PL/SQL Tutorial






  1. Oracle PL/SQL Tutorial
  2. Introduction
  3. dual
SQL>
SQL> select 123 * 456 from dual;

   123*456
----------
     56088

SQL>
SQL> select sysdate from dual;

SYSDATE
----------
26-10-2009

SQL>








1.1.dual
1.1.1.The dual Table
1.1.2.Do simple calculation by using dual