{
    "action": "tool_call",
    "reasoning": "Check whether the only true timestamp column (_ingestion_timestamp) carries any real time variation, in one aggregate query.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT MIN(_ingestion_timestamp) AS first_ts, MAX(_ingestion_timestamp) AS last_ts, COUNT(DISTINCT _ingestion_timestamp) AS distinct_ts, COUNT(DISTINCT _batch_id) AS batches, COUNT(*) AS n FROM raw.Social_media_impact_on_life",
        "purpose": "Check whether the only true timestamp column carries any real time variation",
        "source": "raw"
    }
}