Help Center/ Data Lake Insight/ Spark SQL Syntax Reference/ Built-In Functions/ Mathematical Functions/ tan
Updated on 2023-10-25 GMT+08:00
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tan

This function is used to return the tangent value of a, with input in radians.

Syntax

tan(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 0.99999999999999999999 is returned.

select tan(pi()/4);

The value NULL is returned.

select tan(null);
Parent topic: Mathematical Functions