MySQL LOG10() Function

The MySQL LOG10() function returns the base-10 logarithm of a given number. In special cases it returns the following:

If the number is less than or equal to 0, then NULL is returned.

Syntax

LOG10(number)

Parameters

number Required. Specify the number. Must be greater than 0.

Return Value

Returns the base-10 logarithm of a given number.

Example 1:

The example below shows the usage of LOG10() function.

mysql> SELECT LOG10(1);
Result: 0

mysql> SELECT LOG10(2);
Result: 0.3010299956639812

mysql> SELECT LOG10(3);
Result: 0.47712125471966244

mysql> SELECT LOG10(10);
Result: 1

mysql> SELECT LOG10(15);
Result: 1.1760912590556813

mysql> SELECT LOG10(0);
Result: NULL

Example 2:

Consider a database table called Sample with the following records:

Data	x
Data 1	0.5
Data 2	1
Data 3	5
Data 4	10
Data 5	50

The statement given below can be used to calculate the base-10 logarithm of column x.

SELECT *, LOG10(x) AS LOG10_Value FROM Sample;

This will produce the result as shown below:

Data	x	LOG10_Value
Data 1	0.5	-0.3010299956639812
Data 2	1	0
Data 3	5	0.6989700043360189
Data 4	10	1
Data 5	50	1.6989700043360187

❮ MySQL Functions