*** 162,168 **** SUM(CASE WHEN y.Hours >= x.Hours THEN 1 ELSE 0 END)>=(COUNT(*)/2)+1 ! *: Oracle's wacky, nonstandard join syntax using (+) and (-): SELECT a1.a, a1.b, a2.a, a2.b FROM a1 LEFT JOIN a2 ON a2.b = a1.a --- 162,168 ---- SUM(CASE WHEN y.Hours >= x.Hours THEN 1 ELSE 0 END)>=(COUNT(*)/2)+1 ! *: Oracle's join syntax using (+) and (-): SELECT a1.a, a1.b, a2.a, a2.b FROM a1 LEFT JOIN a2 ON a2.b = a1.a