## Syntax
```mermaid
%%{init: {
'theme': 'base',
'flowchart': { 'padding': '7', 'nodeSpacing': '20', 'rankSpacing': '20' },
'themeVariables': {
'fontSize': '11px',
'fontFamily': 'Arial'
}
}}%%
flowchart LR
Start((START)) --> METAPHONE[METAPHONE]:::quoted
METAPHONE --> End((END))
```
## Purpose
The `METAPHONE` SQL function converts a value to the Metaphone code as defined on <a href="https://en.wikipedia.org/wiki/Metaphone">Wikipedia</a>.
Parameters:
- Input: value to convert to metaphone.
- Length: maximum output length of the given input.
Returns: the input converted to metaphone, with a given output length.