{
    "action": "tool_call",
    "reasoning": "No profile result is in evidence, so I can't cite the column statistics. I'll run one profiling query over raw.Iris to ground the column classification.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT COUNT(*) AS n, COUNT(Id) AS id_nn, MIN(Id) AS id_min, MAX(Id) AS id_max, COUNT(DISTINCT Id) AS id_distinct, COUNT(Species) AS sp_nn, COUNT(DISTINCT Species) AS sp_distinct, MIN(SepalLengthCm) AS sl_min, MAX(SepalLengthCm) AS sl_max, COUNT(SepalLengthCm) AS sl_nn, MIN(SepalWidthCm) AS sw_min, MAX(SepalWidthCm) AS sw_max, COUNT(SepalWidthCm) AS sw_nn, MIN(PetalLengthCm) AS pl_min, MAX(PetalLengthCm) AS pl_max, COUNT(PetalLengthCm) AS pl_nn, MIN(PetalWidthCm) AS pw_min, MAX(PetalWidthCm) AS pw_max, COUNT(PetalWidthCm) AS pw_nn, MIN(_ingestion_timestamp) AS ts_min, MAX(_ingestion_timestamp) AS ts_max, COUNT(DISTINCT _batch_id) AS batch_distinct, COUNT(DISTINCT _source_file) AS file_distinct, COUNT(DISTINCT _source_system) AS system_distinct FROM raw.Iris",
        "purpose": "Profile all columns of raw.Iris in one query to classify them as identifier, dimension, metric, date, or lineage",
        "source": "raw"
    }
}