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# MySQL | FLOOR method

schedule Aug 10, 2023
Last updated
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MySQL
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MySQL's `FLOOR(~)` function returns the largest integer smaller than or equal to the provided input number.

# Parameters

1. `X` | `number`

A number input.

# Return value

The largest integer smaller than or equal to the provided input number.

# Examples

Consider the following table about some students:

student_id

fname

lname

day_enrolled

age

1

Sky

Towner

2015-12-03

17

stowner1

2

Ben

Davis

2016-04-20

19

bdavis2

3

Travis

Apple

2018-08-14

18

tapple3

4

Arthur

David

2016-04-01

16

5

Benjamin

Town

2014-01-01

17

btown5

The above sample table can be created using the code here.

## Basic usage

To return the largest integer smaller than or equal to -13.5:

``` SELECT FLOOR(-13.5); +--------------+| FLOOR(-13.5) |+--------------+| -14 |+--------------+1 row in set (0.01 sec) ```

To return the largest integer smaller than or equal to the average age of students:

``` SELECT FLOOR(AVG(age)), AVG(age)FROM students; +-----------------+----------+| FLOOR(AVG(age)) | AVG(age) |+-----------------+----------+| 17 | 17.4000 |+-----------------+----------+1 row in set (0.01 sec) ```

Here, `17` is the largest integer smaller than `17.4` (the average age of students).

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