I need to count distinct values for all categorical columns across the dataset. From the evidence, I can see that `analytics.column_overview` contains metadata including `rough_kind` which identifies categorical columns, and `approx_distinct_count` which gives the distinct count. Let me query this directly. ```json { "action": "tool_call", "reasoning": "The analytics.column_overview metadata table contains rough_kind='categorical' to identify categorical columns and approx_distinct_count for their cardinality. I'll query this to get distinct counts for all categorical columns across all tables.", "tool": "query_sql", "args": { "sql": "SELECT table_name, column_name, approx_distinct_count FROM analytics.column_overview WHERE rough_kind = 'categorical' ORDER BY approx_distinct_count DESC NULLS LAST, table_name, column_name", "purpose": "Get distinct value counts for all categorical columns in the dataset" } } ```