---
title: useSetMutation
---

Write data to a location, replacing any existing data.

## Usage

```tsx
import { ref } from "firebase/database";
import { useSetMutation } from "@tanstack-query-firebase/react/database";

const userRef = ref(database, `users/${uid}`);
const { mutate } = useSetMutation(userRef);
mutate({ name: "Ada", score: 1 });
```