# PostgreSQL
## Set up a PostgreSQL connection
When inside a workbook, click **View** > **Databases**, then click the **+** icon and follow the on-screen instructions.
For detailed instructions, see [connect-your-data-to-workspace](https://datalab-docs.datacamp.com/connect-to-data/connect-your-data-to-workspace "mention").
If you want to experiment with PostgreSQL without setting up a connection, you can use our sample database with Lego data ([source](https://rebrickable.com/downloads/)).
## Query a PostgreSQL database
You can now query your PostgreSQL database with a [sql-cell](https://datalab-docs.datacamp.com/work/sql-cell "mention"). Select it in the **Select source** dropdown in the top left corner of a SQL cell, or select the sample PostgreSQL database.
Example of a SQL cell using the Lego sample database connection. The query result is available as df.
###
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://datalab-docs.datacamp.com/connect-to-data/postgresql.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
