adamc@226: table t1 : {A : int, B : string, C : float}
adamc@226: table t2 : {A : float, D : int}
adamc@226: 
adamc@226: val q1 = (SELECT * FROM t1 GROUP BY t1.B)
adamc@226: val q2 = (SELECT * FROM t1, t2 GROUP BY t1.B, t2.D, t1.A)