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 | Integer
base
—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 21.8
, Microsoft SQL Server 2017 (14.0)
, MySQL 5.7
, Oracle Database 12c (12.1)
, PostgreSQL 9.3
, YDB
.