---
title: SQL API
description: D1 SQL API reference covering supported SQL statements, foreign keys, and JSON query functions.
image: https://developers.cloudflare.com/dev-products-preview.png
---

> Documentation Index  
> Fetch the complete documentation index at: https://developers.cloudflare.com/d1/llms.txt  
> Use this file to discover all available pages before exploring further.

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# SQL API

* [ SQL statements ](https://developers.cloudflare.com/d1/sql-api/sql-statements/)
* [ Define foreign keys ](https://developers.cloudflare.com/d1/sql-api/foreign-keys/)
* [ Query JSON ](https://developers.cloudflare.com/d1/sql-api/query-json/)

```json
{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/d1/","name":"D1"}},{"@type":"ListItem","position":3,"item":{"@id":"/d1/sql-api/","name":"SQL API"}}]}
```