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MySQL | FLOOR method

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MySQL
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Functions
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Numeric
schedule Jul 1, 2022
Last updated
local_offer 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

username

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

adavid4

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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Published by Arthur Yanagisawa
Edited by 0 others
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