LOG10

Description

Returns the logarithm of x to base 10.

Alias

• DLOG10

Syntax

LOG10(<x>)

Parameters

Parameter	Description
<x>	Antilogarithm should be greater than 0

Return value

Returns a floating-point number. Special cases:

• If x IS NULL, returns NULL
• If x IS NaN, zero, or negative, returns NULL

Example

select log10(1);

+--------------------------+
| log10(cast(1 as DOUBLE)) |
+--------------------------+
|                      0.0 |
+--------------------------+

select log10(10);

+---------------------------+
| log10(cast(10 as DOUBLE)) |
+---------------------------+
|                       1.0 |
+---------------------------+

select log10(16);

+---------------------------+
| log10(cast(16 as DOUBLE)) |
+---------------------------+
|        1.2041199826559248 |
+---------------------------+

select log10(NULL);

+-------------+
| log10(NULL) |
+-------------+
|        NULL |
+-------------+

select log10(cast('nan' as double));

+------------------------------+
| log10(cast('nan' as double)) |
+------------------------------+
|                         NULL |
+------------------------------+