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The FLOOR SQL Function in MySQL and MariaDB - Round down to integer value

FLOOR	Syntax:	FLOOR(Number)
	Return value:	INTEGER
	Function type:	Numeric function

Function Description

The FLOOR() function returns the smallest integer value that's smaller than or equal to "Number".

Character strings as arguments are interpreted as numbers.

If there are invalid values in the argument, the function returns 0.

The FLOOR() function returns NULL if the value of "Number" is NULL.

SQL Examples for the FLOOR function


SELECT floor(6.1);
SELECT floor(6.9);
SELECT floor('4.5');
SELECT floor('');
SELECT floor(null)

floor(6.1)
int(4)
6

floor(6.9)
int(4)
6

floor('4.5')
double(17)
4

floor('')
double(17)
0

floor(null)
double(17)
NULL

The examples were created with the MyWAY SQL manager: Download

How to use the FLOOR() function in MySQL and MariaDB databases

The FLOOR() function in MySQL and MariaDB is used when a value needs to be rounded down to the nearest whole number. This can be useful in various scenarios, such as calculating discounts, truncating decimal values, or finding integer quantities.

Further MySQL und MariaDB SQL Numeric functions

BIT_COUNT	BIT_COUNT(Integer)
	More about BIT_COUNT Function

CEIL	CEIL(Number)
	More about CEIL Function

CEILING	CEILING(Number)
	More about CEILING Function

CRC32	CRC32(String)
	More about CRC32 Function

CRC32C	CRC32C([Parameter], String)

SIGN	SIGN(Number)
	More about SIGN Function

ABS	ABS(Number)
	More about ABS Function

ACOS	ACOS(Number)
	More about ACOS Function

ASIN	ASIN(Number)
	More about ASIN Function

ATAN	ATAN(Number [, Number2])
	More about ATAN Function

ATAN2	ATAN2(Number [, Number2])
	More about ATAN2 Function

COS	COS(Number)
	More about COS Function

COT	COT(Number)
	More about COT Function

DEGREES	DEGREES(Number)
	More about DEGREES Function

EXP	EXP(Number)
	More about EXP Function

LN	LN(Number)
	More about LN Function

LOG	LOG([Base], Number)
	More about LOG Function

LOG10	LOG10(Number)
	More about LOG10 Function

LOG2	LOG2(Number)
	More about LOG2 Function

MOD	MOD(Number, Divider)
	More about MOD Function

POW	POW(Number, Exponent)
	More about POW Function

POWER	POWER(Number, Exponent)
	More about POWER Function

PI	PI()
	More about PI Function

RADIANS	RADIANS(Number)
	More about RADIANS Function

RAND	RAND([Number])
	More about RAND Function

ROUND	ROUND(Number [, Decimals])
	More about ROUND Function

SIN	SIN(Number)
	More about SIN Function

SQRT	SQRT(Number)
	More about SQRT Function

TAN	TAN(Number)
	More about TAN Function

TRUNCATE	TRUNCATE(Number, Decimals)
	More about TRUNCATE Function

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Comparison functions	Encryption & Compression	Conversion functions	NULL functions
Aggregate functions	Window functions	JSON functions	Geometric functions
Sequence functions	Information functions	Dynamic Columns	Miscellaneous functions

More information about the FLOOR SQL function: mysql.com and mariadb.com and w3schools.com

Updated: 2023-09-24

2020-2024 Heino Cunze-Fischer