BigQuery continuous queries added preview stateful processing, enabling joins, aggregations, and window functions within streaming queries.

Google Cloud made stateful processing available in preview for BigQuery continuous queries. The feature allows continuous streaming queries to retain and use state while processing incoming data.

Supported stateful operations include joins, aggregations, and windowing functions directly within streaming queries. Google gave the example of calculating a 30-minute average over time.

The resulting real-time signals can be sent to downstream applications and AI agents. Because the feature is in preview, the source does not describe it as generally available.