SELECT a, m FROM z LATERAL VIEW EXPLODE([1, 2]) q AS m;
SELECT
  "z"."a" AS "a",
  "q"."m" AS "m"
FROM (
  SELECT
    "z"."a" AS "a"
  FROM "z" AS "z"
) AS "z"
LATERAL VIEW
EXPLODE(ARRAY(1, 2)) q AS "m";

SELECT x FROM UNNEST([1, 2]) AS q(x, y);
SELECT
  "q"."x" AS "x"
FROM UNNEST(ARRAY(1, 2)) AS "q"("x", "y");

WITH cte AS (
    (
        SELECT
            a
            FROM
            x
    )
    UNION ALL
    (
        SELECT
            a
        FROM
            y
    )
)
SELECT
    *
FROM
    cte;
WITH "cte" AS (
  (
    SELECT
      "x"."a" AS "a"
    FROM "x" AS "x"
  )
  UNION ALL
  (
    SELECT
      "y"."a" AS "a"
    FROM "y" AS "y"
  )
)
SELECT
  "cte"."a" AS "a"
FROM "cte";

WITH cte1 AS (
    SELECT a
    FROM x
), cte2 AS (
    SELECT a + 1 AS a
    FROM cte1
)
SELECT
    a
FROM cte1
UNION ALL
SELECT
    a
FROM cte2;
WITH "cte1" AS (
  SELECT
    "x"."a" AS "a"
  FROM "x" AS "x"
), "cte2" AS (
  SELECT
    "cte1"."a" + 1 AS "a"
  FROM "cte1"
)
SELECT
  "cte1"."a" AS "a"
FROM "cte1"
UNION ALL
SELECT
  "cte2"."a" AS "a"
FROM "cte2";

SELECT a, SUM(b)
FROM (
    SELECT x.a, y.b
    FROM x, y
    WHERE (SELECT max(b) FROM y WHERE x.a = y.a) >= 0 AND x.a = y.a
) d
WHERE (TRUE AND TRUE OR 'a' = 'b') AND a > 1
GROUP BY a;
SELECT
  "d"."a" AS "a",
  SUM("d"."b") AS "_col_1"
FROM (
  SELECT
    "x"."a" AS "a",
    "y"."b" AS "b"
  FROM (
    SELECT
      "x"."a" AS "a"
    FROM "x" AS "x"
    WHERE
      "x"."a" > 1
  ) AS "x"
  LEFT JOIN (
    SELECT
      MAX("y"."b") AS "_col_0",
      "y"."a" AS "_u_1"
    FROM "y" AS "y"
    GROUP BY
      "y"."a"
  ) AS "_u_0"
    ON "x"."a" = "_u_0"."_u_1"
  JOIN (
    SELECT
      "y"."a" AS "a",
      "y"."b" AS "b"
    FROM "y" AS "y"
  ) AS "y"
    ON "x"."a" = "y"."a"
  WHERE
    "_u_0"."_col_0" >= 0
    AND NOT "_u_0"."_u_1" IS NULL
) AS "d"
GROUP BY
  "d"."a";

(SELECT a FROM x) LIMIT 1;
(
  SELECT
    "x"."a" AS "a"
  FROM "x" AS "x"
)
LIMIT 1;

(SELECT b FROM x UNION SELECT b FROM y) LIMIT 1;
(
  SELECT
    "x"."b" AS "b"
  FROM "x" AS "x"
  UNION
  SELECT
    "y"."b" AS "b"
  FROM "y" AS "y"
)
LIMIT 1;
