{
    "action": "tool_call",
    "reasoning": "The previous query failed because AESTDY and AEENDY are VARCHAR columns containing '..MISSING..' values, not true integers. I need to profile only the genuinely numeric columns. From the inspect_columns results, the only truly numeric column is AESEQ (BIGINT). AESTDTC and AEENDTC are VARCHAR (dates stored as text), and AESTDY/AEENDY are VARCHAR with missing markers. I'll query statistics for AESEQ only, which is the sole numeric column in this dataset.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT COUNT(*) as total_rows, COUNT(AESEQ) as aeseq_count, MIN(AESEQ) as aeseq_min, MAX(AESEQ) as aeseq_max, AVG(AESEQ) as aeseq_mean, MEDIAN(AESEQ) as aeseq_median, STDDEV(AESEQ) as aeseq_stddev FROM raw.ae",
        "purpose": "Profile the distribution of AESEQ, the only numeric column in the dataset",
        "source": "raw"
    }
}