I need to identify all categorical columns and count their distinct values. From the evidence I already have, I can see distinct counts for many categorical columns, but I should get a complete picture. Let me query for all categorical columns with their distinct counts: ```json { "action": "tool_call", "reasoning": "I have partial results showing distinct counts for some categorical columns, but I need a complete view. I'll query the column metadata to get all categorical columns with their distinct value counts in one comprehensive query.", "tool": "query_sql", "args": { "sql": "SELECT table_name, column_name, phys_type, rough_kind, COALESCE(distinct_count, approx_distinct_count) as distinct_values FROM analytics.column_overview WHERE rough_kind IN ('categorical', 'text') OR semantic_role = 'classifier' ORDER BY table_name, distinct_values DESC NULLS LAST", "purpose": "Get all categorical columns with their distinct value counts across all tables", "source": "raw" } } ```