{
    "action": "tool_call",
    "reasoning": "I need to show how the Days metric (reign duration) varies across Champions. From step-5, I can see the Days column contains mixed data: numeric values, dashes, empty strings, and text. I'll query to extract only rows with numeric Days values, clean them (remove commas), and aggregate by Champion to show total reign days and number of reigns per champion. This will reveal which champions had the longest cumulative reigns.",
    "tool": "query_sql",
    "purpose": "Calculate total reign days and number of reigns per champion, filtering for rows with numeric Days values",
    "args": {
        "sql": "SELECT Champion, COUNT(*) as num_reigns, SUM(CAST(REPLACE(Days, ',', '') AS INTEGER)) as total_days, CAST(AVG(CAST(REPLACE(Days, ',', '') AS INTEGER)) AS INTEGER) as avg_days_per_reign, MAX(CAST(REPLACE(Days, ',', '') AS INTEGER)) as longest_single_reign FROM raw.championsdataset WHERE Days NOT IN ('def.', '–', '', 'draw vs.', '−') AND Days NOT LIKE '%def.%' AND Days NOT LIKE '%draw%' AND LENGTH(REPLACE(Days, ',', '')) <= 6 GROUP BY Champion ORDER BY total_days DESC LIMIT 30",
        "source": "raw"
    }
}