I need to provide a comprehensive list of all columns across all tables in the dataset with their data types and meanings. I already have column metadata from the evidence, but I should get a complete view of all tables and their columns. Let me query the metadata to get all columns with their types and semantic roles across all tables. ```json { "action": "tool_call", "reasoning": "I need to get a complete list of all columns across all tables in the dataset with their data types and semantic meanings. The evidence so far shows only the first 50 rows of column metadata. I'll query the meta.columns table to get the full list.", "tool": "query_sql", "args": { "sql": "SELECT table_name, column_name, phys_type, semantic_role, rough_kind FROM meta.columns ORDER BY table_name, column_name", "purpose": "Get complete list of all columns with their data types and semantic roles across all tables" } } ```