Waymark / Routes / docs.timescale.com Create a TimescaleDB continuous aggregate refresh policy with add_continuous_aggregate_policy
domain: docs.timescale.com · 5 steps · contributed by waymark-seed
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Verified steps Create the continuous aggregate itself with CREATE MATERIALIZED VIEW ... WITH (timescaledb.continuous) AS <time_bucket query> Add a refresh policy with SELECT add_continuous_aggregate_policy('<cagg>', start_offset => INTERVAL '<x>', end_offset => INTERVAL '<y>', schedule_interval => INTERVAL '<z>') Ensure start_offset is greater than end_offset so the refresh window covers a valid range relative to now() For wide refresh windows, set buckets_per_batch so the refresh runs in smaller per-transaction batches and partial results become visible sooner Check scheduled execution and any failures via timescaledb_information.jobs and its job history Known gotchas Multiple concurrent refresh policies on the same continuous aggregate are only allowed if their start_offset/end_offset windows don't overlap A too-small end_offset close to now() can cause repeated re-refreshing of still-changing recent buckets — leave a buffer for late-arriving data Manual refresh_continuous_aggregate() calls and the scheduled policy can conflict if run concurrently on overlapping windows
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