Mirror of <https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/log.html> (Salesforce, Data 360 Query Guide), read 2026-10-23. Salesforce's own page is the authority; this copy exists because that site refuses non-browser readers.

LOG

Applies to: ✅ Data 360 SQL ✅ Tableau Hyper API

Returns the base 10 logarithm of a number or the logarithm to a specified base.

• <x>: The value to evaluate.

• <b>: The logarithm base. When provided, the function returns the logarithm of x to base b. When omitted, the function returns the base 10 logarithm.

Returns the logarithm as a double precision value.

• log returns an error for zero or negative arguments.
• A base of 1 is undefined and returns an error.

Get the base 10 logarithm of a value.

Returns 2.0.

Get the logarithm of a value to base 2.

Returns 6.0000000000.

• LN
• POWER
• Mathematical Functions and Operators

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