# Copyright 2015 - 2019 The Cockroach Authors. All rights reserved.
# Copyright Materialize, Inc. and contributors. All rights reserved.
#
# Use of this software is governed by the Business Source License
# included in the LICENSE file at the root of this repository.
#
# As of the Change Date specified in that file, in accordance with
# the Business Source License, use of this software will be governed
# by the Apache License, Version 2.0.
#
# This file is derived from the logic test suite in CockroachDB. The
# original file was retrieved on June 10, 2019 from:
#
#     https://github.com/cockroachdb/cockroach/blob/d2f7fbf5dd1fc1a099bbad790a2e1f7c60a66cc3/pkg/sql/logictest/testdata/logic_test/array
#
# The original source code is subject to the terms of the Apache
# 2.0 license, a copy of which can be found in the LICENSE file at the
# root of this repository.

# not supported yet
halt

mode cockroach

# pg arrays must preserve control characters when converted to string,
# but their direct representation as string does not escape the
# control characters. In order for the test file to remain valid
# printable UTF-8, we double-escape the representations below.

# TODO: Support bytea
#statement ok
#SET bytea_output = escape

# array construction

query error cannot determine type of empty array
SELECT ARRAY[]

query T
SELECT ARRAY[1, 2, 3]
----
{1,2,3}

statement ok
CREATE TABLE k (
  k INT PRIMARY KEY
)

statement ok
INSERT INTO k VALUES (1), (2), (3), (4), (5)

query T rowsort
SELECT ARRAY[k] FROM k
----
{1}
{2}
{3}
{4}
{5}

query error expected 1 to be of type bool, found type int
SELECT ARRAY['a', true, 1]

query T
SELECT ARRAY['a,', 'b{', 'c}', 'd', 'e f']
----
{"a,","b{","c}",d,"e f"}

query T
SELECT ARRAY['1}'::BYTES]
----
{"\\x317d"}

# TODO(jordan): cockroach#16487
# query T
# SELECT ARRAY[e'g\x10h']
# ----
# {g\x10h}

query TTTTTTT
SELECT '', 'NULL', 'Null', 'null', NULL, '"', e'\''
----
·  NULL  Null  null  NULL  "  '

query T
SELECT ARRAY['', 'NULL', 'Null', 'null', NULL, '"', e'\'']
----
{"","NULL","Null","null",NULL,"\"",'}

query T
SELECT NULL::INT[]
----
NULL

query TTTT
SELECT
  ARRAY[NULL]::STRING[],
  ARRAY[NULL]::INT[],
  ARRAY[NULL]::FLOAT[],
  ARRAY[NULL]::TIMESTAMP[]
----
{NULL} {NULL} {NULL} {NULL}

query BB
SELECT NULL::INT[] IS DISTINCT FROM NULL, ARRAY[1,2,3] IS DISTINCT FROM NULL
----
false true

# materialize#19821

query T
SELECT ARRAY['one', 'two', 'fünf']
----
{one,two,fünf}

query T
SELECT ARRAY[e'\n', e'g\x10h']::STRING::BYTES::STRING
----
{"\012",g\020h}

query T
SELECT ARRAY['foo', 'bar']
----
{foo,bar}

# array construction from subqueries

query T
SELECT ARRAY(SELECT 3 WHERE false)
----
{}

statement ok
SELECT ARRAY(SELECT 3 WHERE false) FROM k

query T
SELECT ARRAY(SELECT 3)
----
{3}

query T
SELECT ARRAY(VALUES (1),(2),(1))
----
{1,2,1}

statement error arrays cannot have arrays as element type
SELECT ARRAY(VALUES (ARRAY[1]))

query T
SELECT ARRAY(VALUES ('a'),('b'),('c'))
----
{a,b,c}


# TODO(justin): uncomment when cockroach#32715 is fixed.
# query T
# SELECT ARRAY(SELECT (1,2))
# ----
# {"(1,2)"}

query error subquery must return only one column, found 2
SELECT ARRAY(SELECT 1, 2)

query T
SELECT ARRAY[]:::int[]
----
{}

# casting strings to arrays

query T
SELECT '{1,2,3}'::INT[]
----
{1,2,3}

query T
SELECT '{hello,"hello"}'::STRING[]
----
{hello,hello}

query T
SELECT e'{he\\\\llo}'::STRING[]
----
{"he\\llo"}

query T
SELECT '{"abc\nxyz"}'::STRING[]
----
{abcnxyz}

query T
SELECT '{hello}'::VARCHAR(2)[]
----
{he}

# array casting

query T
SELECT ARRAY['foo']::STRING
----
{foo}

query T
SELECT ARRAY[e'foo\nbar']::STRING::BYTES::STRING
----
{"foo\012bar"}

query TTTTTT
SELECT
  ARRAY[e'foo\000bar']::STRING::BYTES::STRING,
  ARRAY[e'foo\001bar']::STRING::BYTES::STRING,
  ARRAY[e'foo\002bar']::STRING::BYTES::STRING,
  ARRAY[e'foo\030bar']::STRING::BYTES::STRING,
  ARRAY[e'foo\034bar']::STRING::BYTES::STRING,
  ARRAY[e'foo\100bar']::STRING::BYTES::STRING
----
{foo\000bar}  {foo\001bar}  {foo\002bar}  {foo\030bar}  {foo\034bar}  {foo@bar}

query T
SELECT ARRAY[1,2,3]::INT[]
----
{1,2,3}

query error invalid cast: int[] -> UUID[]
SELECT ARRAY[1,2,3]::UUID[]

query error invalid cast: inet[] -> INT[]
SELECT ARRAY['8.8.8.8'::INET, '8.8.4.4'::INET]::INT[]

query T
SELECT ARRAY[1,2,3]::TEXT[]
----
{1,2,3}

query T
SELECT ARRAY[1,2,3]::INT2VECTOR
----
{1,2,3}

# array subscript access

query T
SELECT ARRAY['a', 'b', 'c'][-1]
----
NULL

query T
SELECT ARRAY['a', 'b', 'c'][0]
----
NULL

query T
SELECT (ARRAY['a', 'b', 'c'])[2]
----
b

query T
SELECT ARRAY['a', 'b', 'c'][2]
----
b

query T
SELECT ARRAY['a', 'b', 'c'][4]
----
NULL

query T
SELECT ARRAY['a', 'b', 'c'][1.5 + 1.5]
----
c

query I
SELECT ARRAY[1, 2, 3][-1]
----
NULL

query I
SELECT ARRAY[1, 2, 3][0]
----
NULL

query I
SELECT ARRAY[1, 2, 3][2]
----
2

query I
SELECT ARRAY[1, 2, 3][4]
----
NULL

query I
SELECT ARRAY[1, 2, 3][1.5 + 1.5]
----
3

query error unimplemented: multidimensional indexing
SELECT ARRAY['a', 'b', 'c'][4][2]

query error incompatible ARRAY subscript type: decimal
SELECT ARRAY['a', 'b', 'c'][3.5]

query error could not parse "abc" as type int
SELECT ARRAY['a', 'b', 'c']['abc']

query error cannot subscript type integer because it is not an array
SELECT (123)[2]

# array slicing

query error unimplemented: ARRAY slicing
SELECT ARRAY['a', 'b', 'c'][:]

query error unimplemented: ARRAY slicing
SELECT ARRAY['a', 'b', 'c'][1:]

query error unimplemented: ARRAY slicing
SELECT ARRAY['a', 'b', 'c'][1:2]

query error unimplemented: ARRAY slicing
SELECT ARRAY['a', 'b', 'c'][:2]

query error unimplemented: ARRAY slicing
SELECT ARRAY['a', 'b', 'c'][2:1]

# other forms of indirection

# From a column name.
query T
SELECT a[1] FROM (SELECT ARRAY['a','b','c'] AS a)
----
a

# From a column ordinal.
query T
SELECT @1[1] FROM (SELECT ARRAY['a','b','c'] AS a)
----
a

# From a parenthetized expression.
query I
SELECT (ARRAY(VALUES (1),(2),(1)))[2]
----
2

# From an ArrayFlatten expression - ARRAY(subquery)[...]
query I
SELECT ARRAY(VALUES (1),(2),(1))[2]
----
2

# From a single-column subquery converted to a single datum.
query I
SELECT ((SELECT ARRAY[1, 2, 3]))[3]
----
3

# From a subquery.
query T
SELECT (SELECT ARRAY['a', 'b', 'c'])[3]
----
c

query T
SELECT ARRAY(SELECT generate_series(1,10) ORDER BY 1 DESC)
----
{10,9,8,7,6,5,4,3,2,1}

statement ok
CREATE TABLE z (
  x INT PRIMARY KEY,
  y INT
)

statement ok
INSERT INTO z VALUES (1, 5), (2, 4), (3, 3), (4, 2), (5, 1)

query T
SELECT ARRAY(SELECT x FROM z ORDER BY y)
----
{5,4,3,2,1}

# From a function call expression.
query T
SELECT current_schemas(true)[1]
----
pg_catalog

# From a CASE sub-expression.
query I
SELECT (CASE 1 = 1 WHEN true THEN ARRAY[1,2] ELSE ARRAY[2,3] END)[1]
----
1

# From a tuple.
query error cannot subscript type tuple{int, int, int} because it is not an array
SELECT (1,2,3)[1]

query error cannot subscript type tuple{int, int, int} because it is not an array
SELECT ROW (1,2,3)[1]

# Ensure grouping by an array column works

statement ok
SELECT conkey FROM pg_catalog.pg_constraint GROUP BY conkey

statement ok
SELECT indkey[0] FROM pg_catalog.pg_index

# Verify serialization of array in expression (with distsql).
statement ok
CREATE TABLE t (k INT)

statement ok
INSERT INTO t VALUES (1), (2), (3), (4), (5)

query I rowsort
SELECT k FROM t WHERE k = ANY ARRAY[2,4]
----
2
4

query I rowsort
SELECT k FROM t WHERE k > ANY ARRAY[2,4]
----
3
4
5

query I
SELECT k FROM t WHERE k < ALL ARRAY[2,4]
----
1

# Undocumented - bounds should be allowed, as in Postgres
statement ok
CREATE TABLE boundedtable (b INT[10], c INT ARRAY[10])

statement ok
DROP TABLE boundedtable

# Creating multidimensional arrays should be disallowed.
statement error unimplemented.*\nHINT.*32552
CREATE TABLE badtable (b INT[][])

# Nested arrays should be disallowed

query error unimplemented: arrays cannot have arrays as element type.*\nHINT.*32552
SELECT ARRAY[ARRAY[1,2,3]]

# The postgres-compat aliases should be disallowed.
# INT2VECTOR is deprecated in Postgres.

query error VECTOR column types are unsupported
CREATE TABLE badtable (b INT2VECTOR)

# Using an array as a primary key should be disallowed. materialize#17154

statement error column b is of type int\[\] and thus is not indexable
CREATE TABLE badtable (b INT[] PRIMARY KEY)

# Indexing an array column should be disallowed. materialize#17154

statement error column b is of type int\[\] and thus is not indexable
CREATE TABLE a (b INT[] UNIQUE)


# Regression test for database-issues#5547

statement ok
CREATE TABLE ident (x INT)

query T
SELECT ARRAY[ROW()] FROM ident
----

statement error column b is of type int\[\] and thus is not indexable
CREATE TABLE a (
  b INT[],
  CONSTRAINT c UNIQUE (b)
)

statement error column b is of type int\[\] and thus is not indexable
CREATE TABLE a (
  b INT[],
  INDEX c (b)
)

statement ok
CREATE TABLE a (b INT ARRAY)

query TT
SHOW CREATE TABLE a
----
a  CREATE TABLE a (
     b INT8[] NULL,
     FAMILY "primary" (b, rowid)
   )

statement ok
DROP TABLE a

statement ok
CREATE TABLE a (b INT[], c INT[])

statement error column b is of type int\[\] and thus is not indexable
CREATE INDEX idx ON a (b)

statement error the following columns are not indexable due to their type: b \(type int\[\]\), c \(type int\[\]\)
CREATE INDEX idx ON a (b, c)

statement ok
DROP TABLE a

# Int array columns.

statement ok
CREATE TABLE a (b INT[])

statement ok
INSERT INTO a VALUES (ARRAY[1,2,3])

query T
SELECT b FROM a
----
{1,2,3}

statement ok
DELETE FROM a

statement ok
INSERT INTO a VALUES (NULL)

query T
SELECT b FROM a
----
NULL

statement ok
DELETE FROM a

statement ok
INSERT INTO a VALUES (ARRAY[])

query T
SELECT b FROM a
----
{}

statement ok
DELETE FROM a;

# Make sure arrays originating from ARRAY_AGG work as expected.

statement ok
INSERT INTO a (SELECT array_agg(generate_series) from generate_series(1,3))

query T
SELECT * FROM a
----
{1,2,3}

query TT
SHOW CREATE TABLE a
----
a  CREATE TABLE a (
     b INT8[] NULL,
     FAMILY "primary" (b, rowid)
   )

statement error could not parse "foo" as type int
INSERT INTO a VALUES (ARRAY['foo'])

statement error could not parse "foo" as type int
INSERT INTO a VALUES (ARRAY[1, 'foo'])

statement ok
DELETE FROM a

statement ok
INSERT INTO a VALUES (ARRAY[1,2,3]), (ARRAY[4,5]), (ARRAY[6])

query I
SELECT b[1] FROM a ORDER BY b[1]
----
1
4
6

query I
SELECT b[2] FROM a ORDER BY b[1]
----
2
5
NULL

# NULL values

statement ok
DELETE FROM a

statement ok
INSERT INTO a VALUES (ARRAY[NULL::INT]), (ARRAY[NULL::INT, 1]), (ARRAY[1, NULL::INT]), (ARRAY[NULL::INT, NULL::INT])

query T rowsort
SELECT * FROM a
----
{NULL}
{NULL,1}
{1,NULL}
{NULL,NULL}

statement ok
DELETE FROM a

# Test with arrays bigger than 8 elements so the NULL bitmap has to be larger than a byte

statement ok
INSERT INTO a VALUES (ARRAY[1,2,3,4,5,6,7,8,NULL::INT])

query T
SELECT * FROM a
----
{1,2,3,4,5,6,7,8,NULL}

statement ok
DROP TABLE a

# Ensure that additional type info stays when used as an array.

statement ok
CREATE TABLE a (b SMALLINT[])

query TT
SHOW CREATE TABLE a
----
a  CREATE TABLE a (
   b INT2[] NULL,
   FAMILY "primary" (b, rowid)
)

statement error integer out of range for type int2 \(column "b"\)
INSERT INTO a VALUES (ARRAY[100000])

statement ok
DROP TABLE a

# String array columns.

statement ok
CREATE TABLE a (b STRING[])

statement ok
INSERT INTO a VALUES (ARRAY['foo', 'bar', 'baz'])

query T
SELECT b FROM a
----
{foo,bar,baz}

statement ok
UPDATE a SET b = ARRAY[]

query T
SELECT b FROM a
----
{}

# Test NULLs with strings

statement ok
DELETE FROM a

statement ok
INSERT INTO a VALUES (ARRAY[NULL::STRING, NULL::STRING, NULL::STRING, NULL::STRING, NULL::STRING, NULL::STRING, 'G'])

query T
SELECT * FROM a
----
{NULL,NULL,NULL,NULL,NULL,NULL,G}

statement ok
DROP TABLE a

# Bool array columns.

statement ok
CREATE TABLE a (b BOOL[])

statement ok
INSERT INTO a VALUES (ARRAY[]), (ARRAY[TRUE]), (ARRAY[FALSE]), (ARRAY[TRUE, TRUE]), (ARRAY[FALSE, TRUE])

query T rowsort
SELECT b FROM a
----
{}
{t}
{f}
{t,t}
{f,t}

statement ok
DROP TABLE a

# Float array columns.

statement ok
CREATE TABLE a (b FLOAT[])

statement ok
INSERT INTO a VALUES (ARRAY[1.1, 2.2, 3.3])

query T
SELECT b FROM a
----
{1.1,2.2,3.3}

statement ok
DROP TABLE a

# Decimal array columns.

statement ok
CREATE TABLE a (b DECIMAL[])

statement ok
INSERT INTO a VALUES (ARRAY[1.1, 2.2, 3.3])

query T
SELECT b FROM a
----
{1.1,2.2,3.3}

statement ok
DROP TABLE a

# Bytes array columns.

statement ok
CREATE TABLE a (b BYTES[])

statement ok
INSERT INTO a VALUES (ARRAY['foo','bar','baz'])

query T
SELECT b FROM a
----
{"\\x666f6f","\\x626172","\\x62617a"}

statement ok
DROP TABLE a

# Date array columns.

statement ok
CREATE TABLE a (b DATE[])

statement ok
INSERT INTO a VALUES (ARRAY[current_date])

query I
SELECT count(b) FROM a
----
1

statement ok
DROP TABLE a

# Timestamp array columns.

statement ok
CREATE TABLE a (b TIMESTAMP[])

statement ok
INSERT INTO a VALUES (ARRAY[now()])

query I
SELECT count(b) FROM a
----
1

statement ok
DROP TABLE a

# Interval array columns.

statement ok
CREATE TABLE a (b INTERVAL[])

statement ok
INSERT INTO a VALUES (ARRAY['1-2'::interval])

query T
SELECT b FROM a
----
{"1 year 2 mons"}

statement ok
DROP TABLE a

# UUID array columns.

statement ok
CREATE TABLE a (b UUID[])

statement ok
INSERT INTO a VALUES (ARRAY[uuid_v4()::uuid])

query I
SELECT count(b) FROM a
----
1

statement ok
DROP TABLE a

# OID array columns.

statement ok
CREATE TABLE a (b OID[])

statement ok
INSERT INTO a VALUES (ARRAY[1])

query T
SELECT b FROM a
----
{1}

statement ok
DROP TABLE a

# Collated string array columns.

statement ok
CREATE TABLE a (b STRING[] COLLATE en)

statement ok
INSERT INTO a VALUES (ARRAY['hello' COLLATE en]), (ARRAY['goodbye' COLLATE en])

query T rowsort
SELECT * FROM a
----
{hello}
{goodbye}

statement error value type collatedstring{fr}\[\] doesn't match type collatedstring{en}\[\] of column "b"
INSERT INTO a VALUES (ARRAY['hello' COLLATE fr])

statement ok
DROP TABLE a

query T
SELECT * FROM unnest(ARRAY['a', 'B']) ORDER BY UNNEST;
----
B
a

query T
SELECT * FROM unnest(ARRAY['a' COLLATE en, 'B' COLLATE en]) ORDER BY UNNEST;
----
a
B

# TODO(justin): type system limitation
statement error unsupported binary operator
SELECT ARRAY['foo' COLLATE en] || ARRAY['bar' COLLATE en]

statement error unsupported binary operator
SELECT ARRAY['foo' COLLATE en] || 'bar' COLLATE en

statement ok
CREATE TABLE a (b STRING[])

statement ok
INSERT INTO a VALUES (ARRAY['foo'])

statement error value type collatedstring{en}\[\] doesn't match type text\[\] of column "b"
INSERT INTO a VALUES (ARRAY['foo' COLLATE en])

statement ok
DROP TABLE a

# Array operators

# Element append

query T
SELECT ARRAY['a','b','c'] || 'd'
----
{a,b,c,d}

query T
SELECT ARRAY[1,2,3] || 4
----
{1,2,3,4}

query T
SELECT NULL::INT[] || 4
----
{4}

query T
SELECT 4 || NULL::INT[]
----
{4}

query T
SELECT ARRAY[1,2,3] || NULL::INT
----
{1,2,3,NULL}

query T
SELECT NULL::INT[] || NULL::INT
----
{NULL}

query T
SELECT NULL::INT || ARRAY[1,2,3]
----
{NULL,1,2,3}

query TT
SELECT NULL::INT || NULL::INT[], NULL::INT[] || NULL::INT
----
{NULL} {NULL}

query T
SELECT 1 || ARRAY[2,3,4]
----
{1,2,3,4}

# This is a departure from Postgres' behavior.
# In Postgres, ARRAY[1,2,3] || NULL = ARRAY[1,2,3].

query T
SELECT ARRAY[1,2,3] || NULL
----
{1,2,3}

query T
SELECT NULL || ARRAY[1,2,3]
----
{1,2,3}

# This test is here because its typechecking is related to the above

query TT
SELECT NULL || 'asdf', 'asdf' || NULL
----
NULL NULL

statement ok
CREATE TABLE a (b INT[])

# Ensure arrays appended to still encode properly.

statement ok
INSERT INTO a VALUES (ARRAY[])

statement ok
UPDATE a SET b = b || 1

statement ok
UPDATE a SET b = b || 2

statement ok
UPDATE a SET b = b || 3

statement ok
UPDATE a SET b = b || 4

query T
SELECT b FROM a
----
{1,2,3,4}

statement ok
UPDATE a SET b = NULL::INT || b || NULL::INT

query T
SELECT b FROM a
----
{NULL,1,2,3,4,NULL}

# Array append

query T
SELECT ARRAY[1,2,3] || ARRAY[4,5,6]
----
{1,2,3,4,5,6}

query T
SELECT ARRAY['a','b','c'] || ARRAY['d','e','f']
----
{a,b,c,d,e,f}

query T
SELECT ARRAY[1,2,3] || NULL::INT[]
----
{1,2,3}

query T
SELECT NULL::INT[] || ARRAY[4,5,6]
----
{4,5,6}

query T
SELECT NULL::INT[] || NULL::INT[]
----
NULL

# Array equality

query B
SELECT ARRAY[1,2,3] = ARRAY[1,2,3]
----
true

query B
SELECT ARRAY[1,2,4] = ARRAY[1,2,3]
----
false

query B
SELECT ARRAY[1,2,3] != ARRAY[1,2,3]
----
false

query B
SELECT ARRAY[1,2,4] != ARRAY[1,2,3]
----
true

query B
SELECT ARRAY[1,2,4] = NULL
----
NULL

# This behavior is surprising (one might expect that the result would be
# NULL), but it's how Postgres behaves.
query B
SELECT ARRAY[1,2,NULL] = ARRAY[1,2,3]
----
false

# ARRAY_APPEND function

query TT
SELECT array_append(ARRAY[1,2,3], 4), array_append(ARRAY[1,2,3], NULL::INT)
----
{1,2,3,4} {1,2,3,NULL}

query TT
SELECT array_append(NULL::INT[], 4), array_append(NULL::INT[], NULL::INT)
----
{4} {NULL}

# ARRAY_PREPEND function

query TT
SELECT array_prepend(4, ARRAY[1,2,3]), array_prepend(NULL::INT, ARRAY[1,2,3])
----
{4,1,2,3} {NULL,1,2,3}

query TT
SELECT array_prepend(4, NULL::INT[]), array_prepend(NULL::INT, NULL::INT[])
----
{4} {NULL}

# ARRAY_CAT function

query TT
SELECT array_cat(ARRAY[1,2,3], ARRAY[4,5,6]), array_cat(ARRAY[1,2,3], NULL::INT[])
----
{1,2,3,4,5,6} {1,2,3}

query TT
SELECT array_cat(NULL::INT[], ARRAY[4,5,6]), array_cat(NULL::INT[], NULL::INT[])
----
{4,5,6} NULL

# ARRAY_REMOVE function

query T
SELECT array_remove(ARRAY[1,2,3,2], 2)
----
{1,3}

query T
SELECT array_remove(ARRAY[1,2,3,NULL::INT], NULL::INT)
----
{1,2,3}

query T
SELECT array_remove(NULL::INT[], NULL::INT)
----
NULL

# ARRAY_REPLACE function

query T
SELECT array_replace(ARRAY[1,2,5,4], 5, 3)
----
{1,2,3,4}

query TT
SELECT array_replace(ARRAY[1,2,NULL,4], NULL::INT, 3), array_replace(NULL::INT[], 5, 3)
----
{1,2,3,4} NULL

# ARRAY_POSITION function

query I
SELECT array_position(ARRAY['sun','mon','tue','wed','thu','fri','sat','mon'], 'mon')
----
2

query I
SELECT array_position(ARRAY['sun','mon','tue','wed','thu','fri','sat','mon'], 'abc')
----
NULL

query I
SELECT array_position(NULL::STRING[], 'abc')
----
NULL

# ARRAY_POSITIONS function

query TT
SELECT array_positions(ARRAY['A','A','B','A'], 'A'), array_positions(ARRAY['A','A','B','A'], 'C')
----
{1,2,4} {}

query T
SELECT array_positions(NULL::STRING[], 'A')
----
NULL

query T
SELECT string_to_array('axbxc', 'x')
----
{a,b,c}

query T
SELECT string_to_array('~a~~b~c', '~')
----
{"",a,"",b,c}

query T
SELECT string_to_array('~foo~~bar~baz', '~', 'bar')
----
{"",foo,"",NULL,baz}

query T
SELECT string_to_array('xx~^~yy~^~zz', '~^~', 'yy')
----
{xx,NULL,zz}

query T
SELECT string_to_array('foo', '')
----
{foo}

query T
SELECT string_to_array('', '')
----
{}

query T
SELECT string_to_array('', 'foo')
----
{}

query T
SELECT string_to_array('a', NULL)
----
{a}

query T
SELECT string_to_array(NULL, 'a')
----
NULL

query T
SELECT string_to_array(NULL, 'a', 'b')
----
NULL

query T
SELECT string_to_array('a', 'foo', NULL)
----
{a}

query T
SELECT string_to_array('foofoofoofoo', 'foo', 'foo')
----
{"","","","",""}

# Regression test for materialize#23429.

statement ok
CREATE TABLE x (a STRING[], b INT[])

statement ok
UPDATE x SET a = ARRAY[], b = ARRAY[]


# Github Issue 24175: Regression test for error when using ANY with UUID array.
statement ok
CREATE TABLE documents (shared_users UUID[]);

statement ok
INSERT INTO documents
VALUES
    (ARRAY[]),
    (ARRAY['3ae3560e-d771-4b63-affb-47e8d7853680'::UUID,
           '6CC1B5C1-FE4F-417D-96BD-AFD1FEEEC34F'::UUID]),
    (ARRAY['C6F8286C-3A41-4D7E-A4F4-3234B7A57BA9'::UUID])

query T
SELECT *
FROM documents
WHERE '3ae3560e-d771-4b63-affb-47e8d7853680'::UUID = ANY (documents.shared_users);
----
{3ae3560e-d771-4b63-affb-47e8d7853680,6cc1b5c1-fe4f-417d-96bd-afd1feeec34f}

statement ok
CREATE TABLE u (x INT)

statement ok
INSERT INTO u VALUES (1), (2)

statement ok
CREATE TABLE v (y INT[])

statement ok
INSERT INTO v VALUES (ARRAY[1, 2])

# Regression test for cockroach#30191. Ensure ArrayFlatten returns correct type.
query T
SELECT * FROM v WHERE y = ARRAY(SELECT x FROM u ORDER BY x);
----
{1,2}

# Regression test for cockroach#34439. Ensure that empty arrays are interned correctly.
query B
SELECT ARRAY[''] = ARRAY[] FROM (VALUES (1)) WHERE ARRAY[B''] != ARRAY[]
----
false

subtest 36477

statement ok
CREATE TABLE array_single_family (a INT PRIMARY KEY, b INT[], FAMILY fam0(a), FAMILY fam1(b))

statement ok
INSERT INTO array_single_family VALUES(0,ARRAY[])

statement ok
INSERT INTO array_single_family VALUES(1,ARRAY[1])

statement ok
INSERT INTO array_single_family VALUES(2,ARRAY[1,2])

statement ok
INSERT INTO array_single_family VALUES(3,ARRAY[1,2,NULL])

statement ok
INSERT INTO array_single_family VALUES(4,ARRAY[NULL,2,3])

statement ok
INSERT INTO array_single_family VALUES(5,ARRAY[1,NULL,3])

statement ok
INSERT INTO array_single_family VALUES(6,ARRAY[NULL::INT])

statement ok
INSERT INTO array_single_family VALUES(7,ARRAY[NULL::INT,NULL::INT])

statement ok
INSERT INTO array_single_family VALUES(8,ARRAY[NULL::INT,NULL::INT,NULL::INT])

query IT colnames
SELECT a, b FROM array_single_family ORDER BY a
----
a  b
0  {}
1  {1}
2  {1,2}
3  {1,2,NULL}
4  {NULL,2,3}
5  {1,NULL,3}
6  {NULL}
7  {NULL,NULL}
8  {NULL,NULL,NULL}

statement ok
DROP TABLE array_single_family

query TT
SELECT ARRAY[]::int[], ARRAY[]:::int[]
----
{}  {}

subtest 37544

query T
SELECT
    col_1
FROM
    (
        VALUES
            (ARRAY[]::INT8[]),
            (ARRAY[]::INT8[])
    )
        AS tab_1 (col_1)
GROUP BY
    tab_1.col_1
----
{}