LOG( numeric-expression )

This function converts its argument to DOUBLE, performs the computation in double-precision floating-point arithmetic, and returns a DOUBLE as the result. If the parameter is NULL, the result is NULL.

The argument is an expression that returns the value of any built-in numeric data type.

• LOG10 function [Numeric]

The following statement returns the natural logarithm of 50.

SELECT LOG( 50 );