FLOOR function rounds a number towards zero to the nearest whole number.
|value||Numeric||Yes||The value to round|
The nearest whole number when down (towards zero) from the given value.
When thinking about people's ages, we generally think in whole numbers, and round down. For example, someone who is six months away from their eighteenth birthday is 17.5 years old, but we would normally say they are 17 years old.