> For the complete documentation index, see [llms.txt](https://web.tipsytux.in/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://web.tipsytux.in/services/databases/postgresql.md).

# PostgreSQL

## Enum

{% code overflow="wrap" %}

```sql
-- Get Version Information
select version();
-- Get Current User
select current_user;
-- Get Table Schema
select datname from pg_database;
-- Get Tables
select table_name from information_schema.tables where table_schema = 'public';
-- To learn more about a Table
select column_name, data_type from app.information_schema.columns where table_name = 'menu';
-- Select All
select * from topsecret;
```

{% endcode %}

## Error Based

```sql
-- Casting @@version as integer will create an error message that we can use
cast(version() as integer)
```


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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://web.tipsytux.in/services/databases/postgresql.md?ask=<question>
```

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.