LN() Function in Oracle

In Oracle, the LN() function returns the natural logarithm of its argument, where the argument is greater than 0.

In other words, it returns the base-e logarithm of its argument.

The number e, also known as Euler’s number, is a mathematical constant approximately equal to 2.71828.

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ABS() Function in Oracle

In Oracle, the ABS() function returns the absolute value of its argument.

The absolute value is the non-negative value of a real number without regard to its sign. It describes the distance from zero that a number is on the number line, without considering direction.

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