I need to provide a comprehensive list of all columns across all tables in this dataset, with their data types and meanings. The evidence so far shows only a subset (50 rows) from what appears to be a metadata query. Let me get the complete column catalog. ```json { "action": "tool_call", "reasoning": "The evidence shows only 50 rows from what appears to be a column catalog query, but the dataset has 51 tables with 2,061,290 total rows. I need to query the complete column metadata to provide a full listing. I'll query the analytics.column_overview metadata view which contains all columns with their types and semantic roles.", "tool": "query_sql", "args": { "sql": "SELECT table_name, column_name, phys_type AS data_type, semantic_role, rough_kind FROM analytics.column_overview ORDER BY table_name, column_name", "purpose": "Get complete list of all columns across all tables with their data types and semantic meanings", "source": "raw" } } ```