---
title: KeyColumns
---

# KeyColumns

<a href="https://github.com/remix-run/remix/blob/remix@3.0.0-alpha.6/packages/data-table/src/lib/migrations.ts#L181" target="_blank">View Source</a>

## Summary

Accepts either one key column or multiple (compound key).

## Signature

```ts
type KeyColumns = string | string[];

```