Added test #1947

dbms/tests/queries/0_stateless/00591_columns_removal_union_all.reference

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dbms/tests/queries/0_stateless/00591_columns_removal_union_all.sql

+SELECT * FROM
+(
+    SELECT x FROM (SELECT x, y, arrayJoin(z) FROM (SELECT number AS x, number + 1 AS y, [number % 2, number % 3] AS z FROM numbers(10)) UNION ALL SELECT 1, 2, 3)
+) ORDER BY x;