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The SQRT SQL Function in MySQL and MariaDB - Square root calculation

SQRT	Syntax:	SQRT(Number)
	Return value:	FLOAT
	Function type:	Numeric function

Function Description

The SQRT() function returns the square root of "Number".

The function is equivalent to POW(Number, 0.5).

If the value of the argument is NULL, the SQRT() function returns NULL.

SQL Examples for the SQRT function


select sqrt(4);
select sqrt(45);
select sqrt(4.8);
select sqrt(1);
select sqrt(0);
select sqrt(null);

sqrt(4)
double(23)
2

sqrt(45)
double(23)
6.708203932499369

sqrt(4.8)
double(23)
2.1908902300206643

sqrt(1)
double(23)
1

sqrt(0)
double(23)
0

sqrt(null)
double(23)
NULL

The examples were created with the MyWAY SQL manager: Download

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

The SQRT() function in MySQL and MariaDB can be useful in various mathematical calculations, especially when it comes to finding the length of sides or calculating distances in geometry or physics. The function is commonly used in scientific, engineering, and financial applications. The SQRT() function only returns the positive square root of a value.

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)

FLOOR	FLOOR(Number)
	More about FLOOR Function

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

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 SQRT SQL function: mysql.com and mariadb.com and w3schools.com

Updated: 2023-09-24

2020-2024 Heino Cunze-Fischer