<invoke name="tool_call"> <parameter name="reasoning">Petal length separates species best (gold ranges show setosa max 1.9 vs versicolor min 3.0). Fetch records at its max and min with a query starting with SELECT, no parenthesized start.</parameter> <parameter name="tool">query_sql</parameter> <parameter name="args">{"sql":"SELECT 'highest' AS extreme, species, petal_length, petal_width, sepal_length, sepal_width FROM raw.iris WHERE petal_length = (SELECT MAX(petal_length) FROM raw.iris) UNION ALL SELECT 'lowest' AS extreme, species, petal_length, petal_width, sepal_length, sepal_width FROM raw.iris WHERE petal_length = (SELECT MIN(petal_length) FROM raw.iris)","purpose":"Show highest and lowest petal_length records","source":"raw"}</parameter> </invoke>