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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asin

This function is used to return the arc sine value of a given angle a.

Syntax

asin(DOUBLE a)

Parameters

**Table 1** Parameter
Parameter	Mandatory	Type	Description
a	Yes	DOUBLE, BIGINT, DECIMAL, or STRING	The value range is [-1,1]. 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. The value ranges from -π/2 to π/2.

If the value of a is not within the range [-1,1], NaN is returned.
If the value of a is NULL, NULL is returned.

Example Code

The value 1.5707963267948966 is returned.

select asin(1);

The value 0.6435011087932844 is returned.

select asin(0.6);

The value NULL is returned.

select asin(null);

The value NAN is returned.

select asin(10);

Parent topic: Mathematical Functions

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