# parseFieldPath

> _Since v3.3.0_

Parse a column `field` into path segments, or `null` when it is a plain
top-level key (contains no `.`). Dotted results are memoized.

```ts
function parseFieldPath(field: string): readonly string[] | null
```

## Parameters

| Name | Type | Description |
| ---- | ---- | ----------- |
| `field` | <code>string</code> | The column field key (may be a dotted path like `a.b.c`). |