The LOG() function returns the logarithm of a specified number or the logarithm of the number to the specified base.
Syntax :
LOG(number, base)
Parameter :
LOG() function accepts two-parameters as mentioned above and described below.
-
number –
This parameter hold a number which is greater than 0. -
base –
It is the optional integer argument that sets the base for the logarithm.
Returns –
It returns the logarithm of the specified number with specified base.
Example-1 :
Return the natural logarithm of 4.
SELECT LOG(4);
Output :
1.3862943611198906
Example-2 :
It will Return the natural logarithm of 3 to a specified base 6.
SELECT LOG(3, 6);
Output :
0.61314719276545848
Example-3 :
When the PI() function passing one of the arguments with specified base 5.
SELECT LOG(PI(), 5);
Output :
0.71126066871266902
Example-4 :
When the argument passing as a expressions with specified base.
SELECT LOG(3 + 2, 5);
Output :
1.0
Example-5 :
Both LOG and LOG10 having base 10.
SELECT LOG(1000, 10) 'LOG', LOG10(1000) 'LOG10';
Output :
| LOG | LOG10 | |-------+--------| | 3 | 3 |