PostgreSQL ATAN2
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Postgresql ATAN2
This function returns the arc tangent of Y and X. It is similar to calculate the arc tangent of Y/X, the only different is that the signs of both numbers are used to determine the quadrant of the result.
Syntax ATAN2
- Y is the first number
- X is the second number
ATAN2(X);
Example 1
postgres=# SELECT ATAN2(2,2);
atan2
-------------------
0.785398163397448
(1 row)
Example 2
postgres=# SELECT ATAN2(2,-2);
atan2
------------------
2.35619449019234
(1 row)
