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MySQL | FLOOR method
Database
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schedule Jul 1, 2022
Last updated local_offer MySQL
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expand_more 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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Official MySQL Documentation
https://dev.mysql.com/doc/refman/8.0/en/mathematical-functions.html#function_floor
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