> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://help.sigmacomputing.com/docs/upper/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://help.sigmacomputing.com/_mcp/server.

# Upper

> Use the Sigma Upper function to convert a given string to uppercase.

Converts a given string to uppercase.

Along with **Lower**, this is useful for eliminating case-sensitivity in other Text functions.

## Usage

`Upper(text)`

**text** (required) Text or a column of text.

## Example

`Upper("Warning")`

* Returns “WARNING”

## Related resources

* [Lower](/docs/lower)
* [Proper](/docs/proper)

> Official documentation and guidance for using Sigma to build AI apps, dashboards, and agents on governed warehouse data.