ClickHouse/tests/queries/0_stateless/01732_explain_syntax_union_query.reference

SELECT 1
UNION ALL
SELECT 1
UNION ALL
SELECT 1
UNION ALL
SELECT 1
UNION ALL
SELECT 1
-
SELECT 1
UNION ALL
(
    SELECT 1
    UNION DISTINCT
    SELECT 1
    UNION DISTINCT
    SELECT 1
)
UNION ALL
SELECT 1
-
SELECT x
FROM
(
    SELECT 1 AS x
    UNION ALL
    (
        SELECT 1
        UNION DISTINCT
        SELECT 1
        UNION DISTINCT
        SELECT 1
    )
    UNION ALL
    SELECT 1
)
-
SELECT x
FROM
(
    SELECT 1 AS x
    UNION ALL
    SELECT 1
    UNION ALL
    SELECT 1
)
-
SELECT 1
UNION DISTINCT
SELECT 1
UNION DISTINCT
SELECT 1
-
SELECT 1
-
(
    SELECT 1
    UNION DISTINCT
    SELECT 1
    UNION DISTINCT
    SELECT 1
)
UNION ALL
SELECT 1