Floor
returns the integer below the number, regardless of whether positive or negative.
This Oracle tutorial explains how to use the Oracle/PLSQL FLOOR function.
The syntax for the Oracle/PLSQL FLOOR function is:
FLOOR( number )
number
is the value used to determine the
largest integer value that is equal to or less than a number.
SQL> select floor(1.1) from dual;
-- from ww w . j a v a 2 s .com
FLOOR(1.1)
----------
1
SQL> select floor(1.9) from dual;
FLOOR(1.9)
----------
1
SQL> select floor(-1.1) from dual;
FLOOR(-1.1)
-----------
-2
SQL> select floor(-1.9) from dual;
FLOOR(-1.9)
-----------
-2
SQL> select floor(0) from dual;
FLOOR(0)
----------
0
SQL>