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# title: lateral
# execute: false
SELECT a, m FROM z LATERAL VIEW EXPLODE([1, 2]) q AS m;
SELECT
"z"."a" AS "a",
"q"."m" AS "m"
FROM "z" AS "z"
LATERAL VIEW
EXPLODE(ARRAY(1, 2)) q AS "m";
# title: unnest
SELECT x FROM UNNEST([1, 2]) AS q(x, y);
SELECT
"q"."x" AS "x"
FROM UNNEST(ARRAY(1, 2)) AS "q"("x", "y");
# title: Union in CTE
WITH cte AS (
(
SELECT
a
FROM
x
)
UNION ALL
(
SELECT
b AS a
FROM
y
)
)
SELECT
*
FROM
cte;
WITH "cte" AS (
(
SELECT
"x"."a" AS "a"
FROM "x" AS "x"
)
UNION ALL
(
SELECT
"y"."b" AS "a"
FROM "y" AS "y"
)
)
SELECT
"cte"."a" AS "a"
FROM "cte";
# title: Chained CTEs
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"
)
SELECT
"cte1"."a" AS "a"
FROM "cte1"
UNION ALL
SELECT
"cte1"."a" + 1 AS "a"
FROM "cte1";
# title: Correlated subquery
SELECT a, SUM(b) AS sum_b
FROM (
SELECT x.a, y.b
FROM x, y
WHERE (SELECT max(b) FROM y WHERE x.b = y.b) >= 0 AND x.b = y.b
) d
WHERE (TRUE AND TRUE OR 'a' = 'b') AND a > 1
GROUP BY a;
WITH "_u_0" AS (
SELECT
MAX("y"."b") AS "_col_0",
"y"."b" AS "_u_1"
FROM "y" AS "y"
GROUP BY
"y"."b"
)
SELECT
"x"."a" AS "a",
SUM("y"."b") AS "sum_b"
FROM "x" AS "x"
LEFT JOIN "_u_0" AS "_u_0"
ON "x"."b" = "_u_0"."_u_1"
JOIN "y" AS "y"
ON "x"."b" = "y"."b"
WHERE
"_u_0"."_col_0" >= 0
AND "x"."a" > 1
AND NOT "_u_0"."_u_1" IS NULL
GROUP BY
"x"."a";
# title: Root subquery
(SELECT a FROM x) LIMIT 1;
(
SELECT
"x"."a" AS "a"
FROM "x" AS "x"
)
LIMIT 1;
# title: Root subquery is union
(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;
# title: broadcast
# dialect: spark
SELECT /*+ BROADCAST(y) */ x.b FROM x JOIN y ON x.b = y.b;
SELECT /*+ BROADCAST(`y`) */
`x`.`b` AS `b`
FROM `x` AS `x`
JOIN `y` AS `y`
ON `x`.`b` = `y`.`b`;
# title: aggregate
# execute: false
SELECT AGGREGATE(ARRAY(x.a, x.b), 0, (x, acc) -> x + acc + a) AS sum_agg FROM x;
SELECT
AGGREGATE(ARRAY("x"."a", "x"."b"), 0, ("x", "acc") -> "x" + "acc" + "x"."a") AS "sum_agg"
FROM "x" AS "x";
# title: values
SELECT cola, colb FROM (VALUES (1, 'test'), (2, 'test2')) AS tab(cola, colb);
SELECT
"tab"."cola" AS "cola",
"tab"."colb" AS "colb"
FROM (VALUES
(1, 'test'),
(2, 'test2')) AS "tab"("cola", "colb");
# title: spark values
# dialect: spark
SELECT cola, colb FROM (VALUES (1, 'test'), (2, 'test2')) AS tab(cola, colb);
SELECT
`tab`.`cola` AS `cola`,
`tab`.`colb` AS `colb`
FROM VALUES
(1, 'test'),
(2, 'test2') AS `tab`(`cola`, `colb`);
# title: complex CTE dependencies
WITH m AS (
SELECT a, b FROM (VALUES (1, 2)) AS a1(a, b)
), n AS (
SELECT a, b FROM m WHERE m.a = 1
), o AS (
SELECT a, b FROM m WHERE m.a = 2
) SELECT
n.a,
n.b,
o.b
FROM n
FULL OUTER JOIN o ON n.a = o.a
CROSS JOIN n AS n2
WHERE o.b > 0 AND n.a = n2.a;
WITH "m" AS (
SELECT
"a1"."a" AS "a",
"a1"."b" AS "b"
FROM (VALUES
(1, 2)) AS "a1"("a", "b")
), "n" AS (
SELECT
"m"."a" AS "a",
"m"."b" AS "b"
FROM "m"
WHERE
"m"."a" = 1
), "o" AS (
SELECT
"m"."a" AS "a",
"m"."b" AS "b"
FROM "m"
WHERE
"m"."a" = 2
)
SELECT
"n"."a" AS "a",
"n"."b" AS "b",
"o"."b" AS "b"
FROM "n"
FULL JOIN "o"
ON "n"."a" = "o"."a"
JOIN "n" AS "n2"
ON "n"."a" = "n2"."a"
WHERE
"o"."b" > 0;
# title: Broadcast hint
# dialect: spark
WITH m AS (
SELECT
x.a,
x.b
FROM x
), n AS (
SELECT
y.b,
y.c
FROM y
), joined as (
SELECT /*+ BROADCAST(n) */
m.a,
n.c
FROM m JOIN n ON m.b = n.b
)
SELECT
joined.a,
joined.c
FROM joined;
SELECT /*+ BROADCAST(`y`) */
`x`.`a` AS `a`,
`y`.`c` AS `c`
FROM `x` AS `x`
JOIN `y` AS `y`
ON `x`.`b` = `y`.`b`;
# title: Mix Table and Column Hints
# dialect: spark
WITH m AS (
SELECT
x.a,
x.b
FROM x
), n AS (
SELECT
y.b,
y.c
FROM y
), joined as (
SELECT /*+ BROADCAST(m), MERGE(m, n) */
m.a,
n.c
FROM m JOIN n ON m.b = n.b
)
SELECT
/*+ COALESCE(3) */
joined.a,
joined.c
FROM joined;
SELECT /*+ COALESCE(3),
BROADCAST(`x`),
MERGE(`x`, `y`) */
`x`.`a` AS `a`,
`y`.`c` AS `c`
FROM `x` AS `x`
JOIN `y` AS `y`
ON `x`.`b` = `y`.`b`;
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