LOG

Mathematical functions

Syntax

LOG( value, base )

Description

Returns the logarithm of value to base base. Returns 'NULL' if the number value is less than or equal to 0.

Argument types:

• value — Number
• base — Number

Return type: Number (decimal)

Examples

LOG(1, 2.6) = 0.0

LOG(1024, 2) = 10.0

LOG(100, 10) = 2.0

Data source support

Materialized Dataset, ClickHouse 1.1, Microsoft SQL Server 2017 (14.0), MySQL 5.6, PostgreSQL 9.3