log2 function

Applies to: Databricks SQL Databricks Runtime

Returns the logarithm of expr with base 2.

Syntax

log2(expr)

Arguments

• expr: An expression that evaluates to a numeric.

Returns

A DOUBLE.

If expr is less than or equal to 0 the result is NULL.

Examples

> SELECT log2(2);
 1.0

Related functions

• log function
• ln function
• log1p function
• log10 function
• pow function