---
title: Transactions
description: Use explicit begin, commit, rollback, and await using for safety.
---

# Transactions

Transactions are explicit in `tsql`.

## Manual transaction

```ts
const tx = await db.begin();

try {
	await tx
		.insert("users")
		.values({
			email: "alice@example.com",
			name: "Alice",
			createdAt: new Date("2026-01-01T00:00:00.000Z"),
		})
		.execute();

	await tx.commit();
} catch (error) {
	await tx.rollback();
	throw error;
}
```

## `await using` pattern

```ts
await using tx = await db.begin();

await tx.insert("users").values({
	email: "alice@example.com",
	name: "Alice",
	createdAt: new Date("2026-01-01T00:00:00.000Z"),
}).execute();

await tx.commit();
```

If scope exits without `commit()`, transaction auto-rolls back.

## Behavior guarantees

- Committed/rolled-back transactions cannot be reused.
- `rollback()` after `commit()` is a no-op.
- Nested transactions are not supported (`tx.begin()` throws).
- Running `migrate()` inside a transaction is not supported.

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