---
sidebar_position: 9
title: Constraints
description: Table constraints in DuckDB including PRIMARY KEY, UNIQUE, NOT NULL, and CHECK.
---

import PartialExample from './_include-thing-for-parity-with-duckdb.mdx';

<PartialExample thing="Constraints" verb="are" url="https://duckdb.org/docs/stable/sql/constraints" linkText="Constraints" />