Su, Xiaomeng 76a5b1ee83 dli_sqlreference_20240227

Reviewed-by: Pruthi, Vineet <vineet.pruthi@t-systems.com>
Co-authored-by: Su, Xiaomeng <suxiaomeng1@huawei.com>
Co-committed-by: Su, Xiaomeng <suxiaomeng1@huawei.com>

2024-03-27 22:02:33 +00:00

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sqrt

This function is used to return the square root of a value.

Syntax

sqrt(DOUBLE a)

Parameters

**Table 1** Parameter
Parameter	Mandatory	Type	Description
a	Yes	DOUBLE, BIGINT, DECIMAL, or STRING	The value can be a float, integer, or string. If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.

Return Values

The return value is of the DOUBLE type.

If the value of a is NULL, NULL is returned.

Example Code

The value 2.8284271247461903 is returned.

select sqrt(8);

The value 4 is returned.

select sqrt(16);

The value NULL is returned.

select sqrt(null);

Parent topic: Mathematical Functions

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