{
    "action": "tool_call",
    "reasoning": "Compute top values and frequencies for the main categorical columns (Surface, Rd, Tournament, Name) in raw_kaggle in one query.",
    "tool": "query_sql",
    "args": {
        "sql": "WITH t AS (SELECT 'Surface' AS col, CAST(Surface AS VARCHAR) AS value, COUNT(*) AS n FROM raw.raw_kaggle GROUP BY 2 UNION ALL SELECT 'Rd', CAST(Rd AS VARCHAR), COUNT(*) FROM raw.raw_kaggle GROUP BY 2 UNION ALL SELECT 'Tournament', CAST(Tournament AS VARCHAR), COUNT(*) FROM raw.raw_kaggle GROUP BY 2 UNION ALL SELECT 'Name', CAST(Name AS VARCHAR), COUNT(*) FROM raw.raw_kaggle GROUP BY 2), r AS (SELECT col, value, n, ROUND(100.0*n/SUM(n) OVER (PARTITION BY col),2) AS pct, ROW_NUMBER() OVER (PARTITION BY col ORDER BY n DESC) AS rk FROM t) SELECT col, value, n, pct FROM r WHERE rk<=10 ORDER BY col, n DESC",
        "purpose": "Top values and frequency of main categorical columns in raw_kaggle",
        "source": "raw"
    }
}