CEIL

Round a number up to the next whole number (a positive or negative integer).

CEIL(number)

CEILING is a synonym for CEIL.

For example:
premdb=# SELECT CEIL(2.5);
 ceil 
------
    3
(1 row)
premdb=# SELECT CEIL(-1.2567);
 ceil 
------
   -1
(1 row)
The following example finds the "ceiling" for the results of an AVG function.
premdb=# SELECT seasonid, AVG(SUBSTR(ftscore,3,1)::INT), 
CEIL(AVG(SUBSTR(ftscore,3,1)::INT)) ceilgoals 
FROM match GROUP BY seasonid ORDER BY 2;
 seasonid |            avg            | ceilgoals 
----------+---------------------------+-----------
       15 | 0.99736842105263157894736 |         1
       14 | 1.02368421052631578947368 |         2
       13 | 1.06578947368421052631578 |         2
        9 | 1.06578947368421052631578 |         2
        7 | 1.06842105263157894736842 |         2
...