{
    "action": "tool_call",
    "reasoning": "The previous queries failed because they tried to CAST the 'Day' column, which contains both date strings (like '2026-07-22') and day-of-week labels (like 'Thu', 'Fri'). I need to examine the actual structure of the data more carefully. Let me query a sample of rows to understand the data layout, particularly focusing on what the unnamed columns contain and how the data is actually structured.",
    "tool": "query_sql",
    "sql": "SELECT Day, \"Total Calls\", \"AI Handled\", \"Human Handled\", Voicemail, \"AI Resolution %\", \"Human %\", _unnamed_7, _unnamed_8, _unnamed_9 FROM raw.callyeah_analytics_2026_07_23 WHERE Day NOT IN ('', 'Date', 'Day', 'TOTAL', 'Outcome', 'Reason', 'Call ID') AND \"Total Calls\" NOT IN ('', 'Total Calls', 'Count') LIMIT 20",
    "purpose": "Sample actual data rows to understand the structure and identify what makes this dataset surprising",
    "source": "raw"
}