I need to check for duplicate and near-duplicate rows in the titanic dataset. Let me start by examining what constitutes a unique row and then look for duplicates. ```json { "action": "tool_call", "reasoning": "First, I'll check if there are exact duplicate rows by comparing the total row count against the count of distinct rows across all columns. I'll also check the PassengerId column which should be unique if it's a proper identifier.", "tool": "query_sql", "args": { "sql": "SELECT COUNT(*) as total_rows, COUNT(DISTINCT PassengerId) as distinct_passenger_ids, COUNT(*) - COUNT(DISTINCT PassengerId) as duplicate_passenger_ids FROM raw.titanic", "purpose": "Check if PassengerId is unique and if there are any duplicate IDs" } } ```