LOG
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—Fractional number | Integerbase—Fractional number | Integer
Return type: Fractional number
Examples
LOG(1, 2.6) = 0.0
LOG(1024, 2) = 10.0
LOG(100, 10) = 2.0
Data source support
ClickHouse 19.13, Microsoft SQL Server 2017 (14.0), MySQL 5.6, PostgreSQL 9.3.