> ## Documentation Index
> Fetch the complete documentation index at: https://confidence-auth-testing.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Create Materialized Segment

> Learn how to create a materialized segment that loads units from BigQuery.

**Create Materialized Segment**

Learn how to create a materialized segment that loads units from BigQuery.

[Do this via the API →](/docs/reference/api/how-to-guides/flags/create-materialized-segment.md)

A [materialized segment](/docs/capabilities/segments/materialized-segments.md) loads its list of units from your BigQuery instance using a SQL query.

## Create a Materialized Segment

**1. Navigate to Segments**

Navigate to the **Flags** page in the left menu, then click **Segments**.

**2. Select the Materialized segments tab**

Click the **Materialized segments** tab.

**3. Click + Create**

Click **+ Create** to create a new materialized segment.

**4. Give the segment a name**

Enter a descriptive name for your segment.

**5. Define the SQL query**

Click **+ Load Entities** and enter a SQL query that returns the entity IDs you want to include in the segment.

**6. Run the query and select the column**

Run the query and select the correct column from the response that contains your entity IDs.

**7. Create the load job**

Click **+ Create load job** to start loading units into the segment.

## Related Resources

> **[Materialized Segments Reference](/docs/capabilities/segments/materialized-segments.md)**
>
> Learn when and why to use materialized segments

> **[Create Segments](/docs/capabilities/segments/create-segments.md)**
>
> Create standard attribute-based segments

> **[BigQuery Setup](/docs/start/warehouse-native/bigquery.md)**
>
> Configure your BigQuery connection

> **[Materialized Segments API](/docs/reference/api/how-to-guides/flags/create-materialized-segment.md)**
>
> API reference for materialized segments