SQL
`duckdb_variables`
The `duckdb_variables()` function provides metadata about the variables available in the DuckDB instance.  
| Column | Description | Type |
|:-|:---|:-|
| `name` | The name of the variable, e.g., `x`. | `VARCHAR` |
| `value` | The value of the variable, e.g. `12`. | `VARCHAR` |
| `type` | The type of the variable, e.g., `INTEGER`. | `VARCHAR` |