LN

The LN function returns the natural logarithm of a number with base e, the constant equal to 2.71828182845904. The LN function returns NULL if number is less than or equal to 0.

The LN function has the following format:

LN(n)

• where n is greater than 0

A natural logarithm LN(n) is the inverse of the EXP( ) function and takes as arguments any numeric data, including metrics, metrics expressions, and constants.

Syntax

 SELECT LN(…)
SELECT LN(number)

Examples

SELECT LN(10)
SELECT LN(1/12)
SELECT LN(1.5)
SELECT LN(SUM({fact/amount}))