Natural Logarithm - Teradata Warehouse Miner

Teradata Warehouse Miner User Guide - Volume 2ADS Generation

Product
Teradata Warehouse Miner
Release Number
5.4.5
Published
February 2018
Language
English (United States)
Last Update
2018-05-03
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qhj1503087326201.ditamap
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B035-2301
Product Category
Software

The standard natural logarithm function is supported, generating LN (expression) and returning a value of type float. When dragging a Natural Logarithm into a variable, the following tree element is created.

Variable Creation > Input > Variables: SQL Elements pane - Arithmetic > Natural Logarithm

Columns and/or other expressions can be moved over the (empty) branch of the tree.

There are no special properties for the Natural Logarithm function.

Consider a Case statement in conjunction with this function if zero or negative values may occur in the data, resulting in a SQL argument error.