I need to check for duplicates properly. Let me start by examining the structure of the tables to understand what columns are available. ```json { "action": "tool_call", "reasoning": "The previous query failed because COUNT(DISTINCT *) is not valid DuckDB syntax. I need to first understand the structure of the tables to check for duplicates properly. Let me inspect the main tables to see their columns.", "tool": "inspect_columns", "args": { "table": "cleandata" } } ```