## Syntax
```mermaid
%%{init: {
'theme': 'base',
'flowchart': { 'padding': '7', 'nodeSpacing': '20', 'rankSpacing': '20' },
'themeVariables': {
'fontSize': '11px',
'fontFamily': 'Arial'
}
}}%%
flowchart LR
Start((START)) --> LOG[LOG]:::quoted
LOG --> End((END))
```
## Purpose
The `LOG` SQL function gets the natural logarithm of a number in a specified base.
Parameters:
- Input: a number to get the natural logarithm from.
- Base `[optional]`: the base to get the natural logarithm from.
Returns: the natural logarithm of the input in the specified base.