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Converts a number from radians to degrees.
DEGREES( numeric-expression )
An angle in radians.
This function converts its argument to DOUBLE, performs the computation in double-precision floating-point arithmetic, and
returns the degrees of the angle given by numeric-expression. If the parameter is NULL, the result is NULL.
The following statement returns the value 29.79380534680281:
SELECT DEGREES( 0.52 );