# Precomputed Metrics

## Importing precomputed metrics

### Importing precomputed metrics from your data warehouse

Statsig integrates natively with cloud data warehouses such as [Snowflake](https://docs.statsig.com/data-warehouse-ingestion/snowflake), [BigQuery](https://docs.statsig.com/data-warehouse-ingestion/bigquery), and [Redshift](https://docs.statsig.com/data-warehouse-ingestion/redshift) to ingest your existing metrics for computing experiment results. Go to [Data Warehouse Ingestion](https://docs.statsig.com/data-warehouse-ingestion/introduction) to get started.

## Debugging precomputed metrics

Statsig creates a metric detail page for all precomputed metrics imported from your data warehouse. These metric detail pages take a few hours to generate after import or ingestion. The fastest way to start viewing and debugging your precomputed metrics is through the **Metrics Logstream** in the **Metrics Catalog** tab within **Metrics**.

{% figure %}
![Metrics logstream showing imported precomputed metrics](https://docs.statsig.com/images/metrics/ingest/178854882-730ef0d5-8eb2-4344-88ab-33111301e712.png)
{% /figure %}

The **Metrics Stream** surfaces all ingested, precomputed metrics in real time, enabling you to check metric name, metric value, unit identifier, ID type, and ingestion date.

{% callout type="info" %}
**Tip**

: A common issue is ensuring that precomputed metrics have the correct ID type. Pay extra attention to this column.
{% /callout %}

The **Metrics Stream** only appears if you're actively ingesting precomputed metrics. If it doesn't appear at the bottom of your **Metrics Catalog**, Statsig likely isn't receiving your precomputed metrics due to a connection issue or an invalid schema.