> ## Documentation Index
> Fetch the complete documentation index at: https://docs.omni.co/llms.txt
> Use this file to discover all available pages before exploring further.

# topics

> The two or more topics to combine into a composite topic.

**Required**. The two or more existing topics to combine into a composite topic. Each topic is aggregated independently in its own subquery, then aligned on the shared dimensions and views.

## Syntax

```yaml theme={null}
topics: [<topic_name>, <topic_name>, ...]
```

## Properties

<ParamField path="topics" type="string[]" required>
  A list of two or more existing topic names in the same model. Each must resolve to a topic the composite can query.
</ParamField>

## Examples

```yaml theme={null}
topics: [orders_topic, marketing_topic]
```