{
    "action": "tool_call",
    "reasoning": "Retrieve distinct counts for categorical/text columns across all tables from the profiling metadata in a single query.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT table_name, column_name, phys_type, semantic_role, rough_kind, distinct_count, approx_distinct_count, null_count FROM analytics.column_overview WHERE phys_type = 'VARCHAR' OR rough_kind ILIKE '%categ%' OR semantic_role ILIKE '%categ%' OR semantic_role ILIKE '%class%' ORDER BY table_name, distinct_count DESC",
        "purpose": "Get distinct counts for all categorical/text columns across tables from profiling metadata",
        "source": "raw"
    }
}