# name: test/sql/subquery/scalar/array_subquery.test
# description: Test ARRAY subquery
# group: [scalar]

statement ok
SET default_null_order='nulls_first';

statement ok
CREATE TABLE integers(i INTEGER);

statement ok
INSERT INTO integers VALUES (1), (2), (3), (NULL);

# uncorrelated
query II
SELECT i, ARRAY(
	SELECT 42
) top
FROM integers i1
ORDER BY i
----
NULL	[42]
1	[42]
2	[42]
3	[42]

# single element
query II
SELECT i, ARRAY(
	SELECT i FROM integers WHERE i1.i=i
) top
FROM integers i1
ORDER BY i
----
NULL	[]
1	[1]
2	[2]
3	[3]

# multiple elements
query II
SELECT i, ARRAY(
	SELECT i FROM integers WHERE i>i1.i ORDER BY i ASC NULLS FIRST
) top
FROM integers i1
ORDER BY i
----
NULL	[]
1	[2, 3]
2	[3]
3	[]

# array with limit
query II
SELECT i, ARRAY(
	SELECT i1.i FROM integers i1, integers i2, integers i3, integers i4 WHERE i1.i=integers.i LIMIT 3
) top
FROM integers
ORDER BY i
----
NULL	[]
1	[1, 1, 1]
2	[2, 2, 2]
3	[3, 3, 3]

# array with limit and offset
query II
SELECT i, ARRAY(
	SELECT i1.i FROM integers i1, integers i2, integers i3, integers i4 WHERE i1.i=integers.i LIMIT 3 OFFSET 3
) top
FROM integers
ORDER BY i
----
NULL	[]
1	[1, 1, 1]
2	[2, 2, 2]
3	[3, 3, 3]

# offset on the edge
query II
SELECT i, ARRAY(
	SELECT i1.i FROM integers i1, integers i2, integers i3, integers i4 WHERE i1.i=integers.i LIMIT 3 OFFSET 62
) top
FROM integers
ORDER BY i
----
NULL	[]
1	[1, 1]
2	[2, 2]
3	[3, 3]

# should only allow one column in array subquery
statement error
select array(select 1,2)
----
<REGEX>:.*inder Error.*Subquery returns 2 columns.*