ClickHouse/tests/queries/0_stateless/00587_union_all_type_conversions.sql

SET max_threads = 1;

SELECT * FROM (SELECT 1 as x UNION ALL SELECT -1) ORDER BY x DESC;
SELECT * FROM (SELECT x, toTypeName(x) FROM (SELECT 1 AS x UNION ALL SELECT -1)) ORDER BY x DESC;

SELECT x FROM (SELECT 1 as x UNION ALL SELECT NULL) ORDER BY x DESC;
SELECT * FROM (SELECT x, toTypeName(x) FROM (SELECT 1 AS x UNION ALL SELECT NULL)) ORDER BY x DESC;

SELECT x FROM (SELECT 1 AS x UNION ALL SELECT NULL UNION ALL SELECT 1.0) ORDER BY x DESC;
SELECT * FROM (SELECT x, toTypeName(x), count() FROM (SELECT 1 AS x UNION ALL SELECT NULL UNION ALL SELECT 1.0) GROUP BY x) ORDER BY x DESC;

SELECT res FROM (SELECT arrayJoin(x) AS res FROM (SELECT [1, 2, 3] AS x UNION ALL SELECT [nan, NULL]) ORDER BY res) ORDER BY res DESC;