ClickHouse/tests/queries/0_stateless/00680_duplicate_columns_inside_union_all.sql

SELECT x, y FROM (SELECT x, y FROM (SELECT 1 AS x, 2 AS y) UNION ALL SELECT x, x FROM (SELECT 3 AS x, 4 AS y)) ORDER BY x, y;
SELECT x, y FROM (SELECT x, y FROM (SELECT 1 AS x, 2 AS y) UNION ALL SELECT y, y FROM (SELECT 3 AS x, 4 AS y)) ORDER BY x, y;
SELECT x, y FROM (SELECT x, x, y FROM (SELECT 1 AS x, 2 AS y) UNION ALL SELECT x, y, y FROM (SELECT 3 AS x, 4 AS y)) ORDER BY x, y;
SELECT x, y FROM (SELECT x, y, y FROM (SELECT 1 AS x, 2 AS y) UNION ALL SELECT x, x, y FROM (SELECT 3 AS x, 4 AS y)) ORDER BY x, y;
Correct number of columns is returned from an element of UNION ALL inside a subquery if some column was queried more than once #2786 2018-08-05 03:28:31 +00:00			`SELECT x, y FROM (SELECT x, y FROM (SELECT 1 AS x, 2 AS y) UNION ALL SELECT x, x FROM (SELECT 3 AS x, 4 AS y)) ORDER BY x, y;`
			`SELECT x, y FROM (SELECT x, y FROM (SELECT 1 AS x, 2 AS y) UNION ALL SELECT y, y FROM (SELECT 3 AS x, 4 AS y)) ORDER BY x, y;`
Revert "Check for ambiguous column names in subqueries #2094" This reverts commit 36eae150d6feffb81e30cb999a7a0865fe5a1bd3. 2018-08-05 06:18:53 +00:00			`SELECT x, y FROM (SELECT x, x, y FROM (SELECT 1 AS x, 2 AS y) UNION ALL SELECT x, y, y FROM (SELECT 3 AS x, 4 AS y)) ORDER BY x, y;`
			`SELECT x, y FROM (SELECT x, y, y FROM (SELECT 1 AS x, 2 AS y) UNION ALL SELECT x, x, y FROM (SELECT 3 AS x, 4 AS y)) ORDER BY x, y;`