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

# What's new in Sigma

> Sigma release notes for Aug 4, 2023: Hierarchies, custom functions, and more.

## Generally available

* MySQL connector is now GA. For more information, see [Connect to MySQL](https://help.sigmacomputing.com/docs/connect-to-mysql).
* Multi-tab Excel Export is now GA.
* The Schedule Reports modal now has the option to Merge Excel files. If you select more than one Excel attachment, Sigma allows you to export them together in one Excel file, with each element in its own tab.

## Data modeling

### Hierarchies (Beta)

Use the hierarchy feature for grouping the data and calculations at various category levels, and to keep track of the order between the coarsest and finest granularity of data. See [Hierarchies](https://help.sigmacomputing.com/docs/hierarchies).

## Functions

### Custom functions (Beta)

Use custom functions in your Sigma practice to encode business logic instead of repeating it, encapsulate complex calculations that are common business use cases for easier use, and to expose your proprietary warehouse functions and make them more consumable. See [Custom functions](https://help.sigmacomputing.com/docs/custom-functions).

## Workbook elements

### AI-enhanced input tables (Beta)

Input tables now support AI-generated columns. You can use structured AI prompts to perform data classification, sentiment analysis (opinion mining), and column fill (data synthesis). For more information, see [Create AI-enhanced input tables](https://help.sigmacomputing.com/docs/create-ai-enhanced-input-tables).

The AI functionality utilizes the OpenAI integration, which allows Sigma to leverage OpenAI language models (e.g., GPT-3.5 and GPT-4 models that power ChatGPT). For information about AI security and data handling, refer to Frequently asked questions in [Manage OpenAI integration](https://help.sigmacomputing.com/docs/manage-openai-integration).

### Button stretch

Button elements now support a Stretch option in the Alignment > Horizontal property. This option provides more control over button displays by allowing you to set the background or border to span the full width of the element. For more information about button elements, see [Create a one-click action button](https://help.sigmacomputing.com/docs/create-a-one-click-action-button).

## Workbook features

### Default blue in custom themes

Sigma now features a new default blue (#0059EB) across the product. To preserve the appearance of existing workbooks, the color change has not been applied to custom workbook themes that utilized the previous default blue as the primary color. You must [manually update custom workbook themes](https://help.sigmacomputing.com/docs/create-and-manage-workbook-themes) to change the primary color to the new default blue.

### Copy + paste workbook pages (Beta)

Copy a page from one workbook and paste it in another. For more information, see [Copy and paste workbook pages](https://help.sigmacomputing.com/docs/copy-and-paste-workbook-pages).