ABS(x) gets the absolute value of x : ABS « Numerical Math Functions « Oracle PL/SQL Tutorial

1. Oracle PL/SQL Tutorial
2. Numerical Math Functions
3. ABS

The absolute value of a number is that number without any positive or negative sign.

The following example displays the absolute value of 10 and - 10:

SQL> SELECT ABS(10), ABS(-10) FROM dual;

   ABS(10)   ABS(-10)
---------- ----------
        10         10

SQL>