>>--+-CEILING-+---(--expression--)----------------------------->< '-CEIL----'
The schema is SYSFUN.
Returns the smallest integer value greater than or equal to the argument.
The argument can be of any built-in numeric type. If the argument is of type DECIMAL or REAL, it is converted to a double-precision floating-point number for processing by the function. If the argument is of type SMALLINT or INTEGER, the argument value is returned.
The result of the function is:
The result can be null; if the argument is null, the result is the null value.