I need to get the distinct value counts for categorical columns. Let me first understand the structure better by querying the column metadata that's available. ```json { "action": "tool_call", "reasoning": "The inspect_columns result shows columns across multiple tables with their rough_kind. I need to query the analytics.column_overview metadata to get distinct_count for all categorical columns across all tables in one query.", "tool": "query_sql", "args": { "sql": "SELECT table_name, column_name, phys_type, rough_kind, distinct_count, approx_distinct_count FROM analytics.column_overview WHERE rough_kind = 'categorical' ORDER BY distinct_count DESC NULLS LAST, table_name, column_name", "purpose": "Get distinct value counts for all categorical columns across all tables" } } ```