```json { "action": "tool_call", "reasoning": "The previous query failed because ko_rate is a VARCHAR column that needs to be aggregated or included in GROUP BY. I need to fix this by either aggregating ko_rate or removing it from the SELECT. Let me create a proper segmentation query that groups fighters by experience tiers and aggregates their KO rates properly.", "tool": "query_sql", "args": { "sql": "SELECT CASE WHEN wins = 0 THEN '0 wins (debut/inactive)' WHEN wins BETWEEN 1 AND 5 THEN '1-5 wins (novice)' WHEN wins BETWEEN 6 AND 15 THEN '6-15 wins (developing)' WHEN wins BETWEEN 16 AND 30 THEN '16-30 wins (experienced)' ELSE '31+ wins (elite)' END AS experience_tier, COUNT(*) AS fighter_count, ROUND(AVG(wins), 1) AS avg_wins, ROUND(AVG(looses), 1) AS avg_losses, ROUND(AVG(draws), 1) AS avg_draws, COUNT(CASE WHEN ko_rate != 'Unknown' THEN 1 END) AS fighters_with_ko_data, ROUND(AVG(CASE WHEN ko_rate != 'Unknown' THEN CAST(REPLACE(ko_rate, '%', '') AS DECIMAL) END), 1) AS avg_ko_rate FROM raw.fighters GROUP BY CASE WHEN wins = 0 THEN '0 wins (debut/inactive)' WHEN wins BETWEEN 1 AND 5 THEN '1-5 wins (novice)' WHEN wins BETWEEN 6 AND 15 THEN '6-15 wins (developing)' WHEN wins BETWEEN 16 AND 30 THEN '16-30 wins (experienced)' ELSE '31+ wins (elite)' END ORDER BY MIN(wins)", "purpose": "Segment fighters by experience level (win count tiers) and show distribution with aggregated stats including KO rates" } } ```