ORACLE ATAN2()

오라클 ATAN2()

 

ATAN2 returns the arc tangent of n1 and n2. The argument n1 can be in an unbounded range and returns a value in the range of -pi to pi, depending on the signs of n1 and n2, expressed in radians.

 

SQL > SELECT ATAN2(-2, 1) FROM DUAL ;

   --> -1.10714871779409