Method _describe

xtop/core/query_engine.py:359–361

(q: str)

            
            # Get schema using DESCRIBE, with parquet fallback if CSV not available
            def _describe(q: str):
                conn = self.data_source.connect()
                return conn.execute(f"DESCRIBE ({q} LIMIT 0)").fetchall()
            try:
                result = _describe(query)
            except Exception as e: