ClickHouse/tests/queries/1_stateful/00067_union_all.sql

SELECT * FROM
(
	SELECT UserID AS id, 1 AS event
	FROM remote('127.0.0.{1,2}', test, hits)
	ORDER BY id DESC
	LIMIT 10
UNION ALL
	SELECT FUniqID AS id, 2 AS event
	FROM remote('127.0.0.{1,2}', test, hits)
	ORDER BY id DESC
	LIMIT 10
)
ORDER BY id, event
SETTINGS max_rows_to_read = 40_000_000;