```json { "action": "tool_call", "reasoning": "The inspect_columns result shows column names but the 'range' values are confusing (e.g., 'Day' ranges from '..Voicemail', 'Total Calls' from '..Total Calls'). This suggests the data may have header rows or formatting issues. I need to look at actual sample rows to understand what the categorical columns contain and identify which are truly categorical. Let me query a sample of the data to see its structure.", "tool": "query_sql", "args": { "sql": "SELECT * FROM raw.callyeah_analytics_2026_07_23 LIMIT 10", "purpose": "Examine sample rows to understand the data structure and identify categorical columns", "source": "raw" } } ```