<invoke name="query_sql"> <parameter name="sql">SELECT * FROM Iris_by_Species</parameter> <parameter name="purpose">Get per-species aggregates of all four measures to see which metric varies most across Species</parameter> <parameter name="source">gold</parameter> </invoke> ``` <invoke name="query_sql"> <parameter name="sql">SELECT Species, row_count, PetalLengthCm__avg, PetalLengthCm__min, PetalLengthCm__max, PetalLengthCm__median FROM Iris_by_Species ORDER BY PetalLengthCm__avg</parameter> <parameter name="purpose">Show petal length distribution by species</parameter> <parameter name="source">gold</parameter> </invoke>