DATA OPS

Block warehouse exports sourced from stale BigQuery tables

Before a scheduled export copies BigQuery data into a downstream Postgres warehouse, it verifies every source table meets its freshness SLA and, if any is stale, aborts…

CategoryData Ops
Enginesim
Difficultyintermediate
Triggerschedule
Steps5
Setup~15 min

How it runs

The automated pipeline, trigger to output.

  • TriggerScheduled export window
  • ActionRead latest partition for every export sourceGoogle BigQueryBigQuery
  • LogicVerify all sources meet SLA; run-or-abort
  • ActionRun export load into downstream warehousePostgreSQLPostgres
  • OutputAlert teams if export was skipped for stalenessSlack

What it does

It guards the boundary where data leaves BigQuery. Ahead of each scheduled export job, it checks the freshness of every source table the export depends on. If all are within SLA it runs the export into the downstream Postgres warehouse; if any source is stale it aborts, records the skip, and notifies the teams that would have consumed the data so no one builds on a partial copy.

When to use it

Use it when stale BigQuery data shouldn't be copied into a reverse-ETL target, reporting replica, or activation warehouse. Prevents bad data from spreading past the lakehouse.

How it works

  1. 1A schedule fires at each export window.
  2. 2A BigQuery action reads the latest partition timestamp for every source table in the export.
  3. 3A logic step verifies all sources meet SLA and decides run-or-abort.
  4. 4On pass, a Postgres action runs the export load into the downstream warehouse.
  5. 5On fail, a Slack message alerts data and consuming teams that the export was skipped and why.

Set it up

What you configure once, before turning it on.

  1. 1
    Connect BigQueryDatasets, queries, schemas.
  2. 2
    Connect PostgresAny Postgres URL — query, write, migrate.
  3. 3
    Connect SlackChannels, DMs, threads, mentions.
  4. 4
    Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
  5. 5
    Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
  6. 6
    Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.

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