ATAN
Calculates the arc tangent of the real number returned by the specified expression <expression>.
Syntax
ATAN(<expression>)
Parameters
| Parameter | Description | Supported input types |
|---|---|---|
<expression> | The expression that the ATAN function is applied to | Any expression that evaluates to a real number |
Return Type
DOUBLE PRECISION
Example
The following example returns the arc tangent of the specified literal value 90:
SELECT
ATAN(90);
Returns: 1.5596856728972892