Returns the arc-tangent, in radians, of the ratio of two numbers.
ATAN2 ( numeric-expression-1, numeric-expression-2 )
numeric-expression-1 The numerator in the ratio whose arc-tangent is calculated.
numeric-expression-2 The denominator in the ratio whose arc-tangent is calculated.
This function converts its arguments to DOUBLE, and performs the computation in double-precision floating point.
SQL/2003 Vendor extension.
The following statement returns the arc-tangent value for the ratio 0.52 to 0.60.
SELECT ATAN2( 0.52, 0.60 );
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