MySQL 에러: Disk got full writing '.(temporary)' (Errcode: 28 "No space left on device")
실행 쿼리: SELECT atu.id, atu.url, atc.parent_category, atc.sub_category, atc.short_name, atc.long_name, atc.description, atc.tags, atc.pricing_model, atc.starting_price, ac.display_name_ko as category_name_ko, ac.display_name_en as category_name_en FROM ai_tool_urls atu INNER JOIN ai_tool_categorizations atc ON atu.id = atc.tool_id INNER JOIN ai_tool_categories ac ON atc.sub_category = ac.sub_category LEFT JOIN traffic_stats ts ON atu.id = ts.tool_id AND ts.created_at = ( SELECT MAX(created_at) FROM traffic_stats ts2 WHERE ts2.tool_id = atu.id ) WHERE atc.parent_category NOT IN ('technical_issues', 'access_restricted', 'unavailable') AND (atc.sub_category = 'teach_students' OR atu.id IN (SELECT tool_id FROM ai_tool_additional_categories WHERE sub_category = 'teach_students')) ORDER BY COALESCE(ts.estimated_monthly_visits, 0) DESC, atc.categorized_at DESC LIMIT 20 OFFSET 40