framework/resources/Functional/union_all/prq_union_all/drill-4679.q

SELECT CONVERT_FROM('[{a : 100, b: 200}, {a:300, b: 400}]' ,'JSON') AS MYCOL1  FROM (VALUES(1)) union all SELECT CONVERT_FROM('[{a : 100, b: 200}, {a:300, b: 400}]' ,'JSON') AS MYCOL1  FROM (VALUES(1)) where 1 = 0;