Adding upstream version 15.5.upstream/15.5

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 776 insertions, 0 deletions

diff --git a/src/test/regress/sql/arrays.sql b/src/test/regress/sql/arrays.sql
new file mode 100644
index 0000000..df5a340
--- /dev/null
+++ b/src/test/regress/sql/arrays.sql
@@ -0,0 +1,776 @@
+--
+-- ARRAYS
+--
+
+-- directory paths are passed to us in environment variables
+\getenv abs_srcdir PG_ABS_SRCDIR
+
+CREATE TABLE arrtest (
+	a 			int2[],
+	b 			int4[][][],
+	c 			name[],
+	d			text[][],
+	e 			float8[],
+	f			char(5)[],
+	g			varchar(5)[]
+);
+
+CREATE TABLE array_op_test (
+	seqno		int4,
+	i			int4[],
+	t			text[]
+);
+
+\set filename :abs_srcdir '/data/array.data'
+COPY array_op_test FROM :'filename';
+ANALYZE array_op_test;
+
+--
+-- only the 'e' array is 0-based, the others are 1-based.
+--
+
+INSERT INTO arrtest (a[1:5], b[1:1][1:2][1:2], c, d, f, g)
+   VALUES ('{1,2,3,4,5}', '{{{0,0},{1,2}}}', '{}', '{}', '{}', '{}');
+
+UPDATE arrtest SET e[0] = '1.1';
+
+UPDATE arrtest SET e[1] = '2.2';
+
+INSERT INTO arrtest (f)
+   VALUES ('{"too long"}');
+
+INSERT INTO arrtest (a, b[1:2][1:2], c, d, e, f, g)
+   VALUES ('{11,12,23}', '{{3,4},{4,5}}', '{"foobar"}',
+           '{{"elt1", "elt2"}}', '{"3.4", "6.7"}',
+           '{"abc","abcde"}', '{"abc","abcde"}');
+
+INSERT INTO arrtest (a, b[1:2], c, d[1:2])
+   VALUES ('{}', '{3,4}', '{foo,bar}', '{bar,foo}');
+
+INSERT INTO arrtest (b[2]) VALUES(now());  -- error, type mismatch
+
+INSERT INTO arrtest (b[1:2]) VALUES(now());  -- error, type mismatch
+
+SELECT * FROM arrtest;
+
+SELECT arrtest.a[1],
+          arrtest.b[1][1][1],
+          arrtest.c[1],
+          arrtest.d[1][1],
+          arrtest.e[0]
+   FROM arrtest;
+
+SELECT a[1], b[1][1][1], c[1], d[1][1], e[0]
+   FROM arrtest;
+
+SELECT a[1:3],
+          b[1:1][1:2][1:2],
+          c[1:2],
+          d[1:1][1:2]
+   FROM arrtest;
+
+SELECT array_ndims(a) AS a,array_ndims(b) AS b,array_ndims(c) AS c
+   FROM arrtest;
+
+SELECT array_dims(a) AS a,array_dims(b) AS b,array_dims(c) AS c
+   FROM arrtest;
+
+-- returns nothing
+SELECT *
+   FROM arrtest
+   WHERE a[1] < 5 and
+         c = '{"foobar"}'::_name;
+
+UPDATE arrtest
+  SET a[1:2] = '{16,25}'
+  WHERE NOT a = '{}'::_int2;
+
+UPDATE arrtest
+  SET b[1:1][1:1][1:2] = '{113, 117}',
+      b[1:1][1:2][2:2] = '{142, 147}'
+  WHERE array_dims(b) = '[1:1][1:2][1:2]';
+
+UPDATE arrtest
+  SET c[2:2] = '{"new_word"}'
+  WHERE array_dims(c) is not null;
+
+SELECT a,b,c FROM arrtest;
+
+SELECT a[1:3],
+          b[1:1][1:2][1:2],
+          c[1:2],
+          d[1:1][2:2]
+   FROM arrtest;
+
+SELECT b[1:1][2][2],
+       d[1:1][2]
+   FROM arrtest;
+
+INSERT INTO arrtest(a) VALUES('{1,null,3}');
+SELECT a FROM arrtest;
+UPDATE arrtest SET a[4] = NULL WHERE a[2] IS NULL;
+SELECT a FROM arrtest WHERE a[2] IS NULL;
+DELETE FROM arrtest WHERE a[2] IS NULL AND b IS NULL;
+SELECT a,b,c FROM arrtest;
+
+-- test mixed slice/scalar subscripting
+select '{{1,2,3},{4,5,6},{7,8,9}}'::int[];
+select ('{{1,2,3},{4,5,6},{7,8,9}}'::int[])[1:2][2];
+select '[0:2][0:2]={{1,2,3},{4,5,6},{7,8,9}}'::int[];
+select ('[0:2][0:2]={{1,2,3},{4,5,6},{7,8,9}}'::int[])[1:2][2];
+
+--
+-- check subscription corner cases
+--
+-- More subscripts than MAXDIM (6)
+SELECT ('{}'::int[])[1][2][3][4][5][6][7];
+-- NULL index yields NULL when selecting
+SELECT ('{{{1},{2},{3}},{{4},{5},{6}}}'::int[])[1][NULL][1];
+SELECT ('{{{1},{2},{3}},{{4},{5},{6}}}'::int[])[1][NULL:1][1];
+SELECT ('{{{1},{2},{3}},{{4},{5},{6}}}'::int[])[1][1:NULL][1];
+-- NULL index in assignment is an error
+UPDATE arrtest
+  SET c[NULL] = '{"can''t assign"}'
+  WHERE array_dims(c) is not null;
+UPDATE arrtest
+  SET c[NULL:1] = '{"can''t assign"}'
+  WHERE array_dims(c) is not null;
+UPDATE arrtest
+  SET c[1:NULL] = '{"can''t assign"}'
+  WHERE array_dims(c) is not null;
+-- Un-subscriptable type
+SELECT (now())[1];
+
+-- test slices with empty lower and/or upper index
+CREATE TEMP TABLE arrtest_s (
+  a       int2[],
+  b       int2[][]
+);
+INSERT INTO arrtest_s VALUES ('{1,2,3,4,5}', '{{1,2,3}, {4,5,6}, {7,8,9}}');
+INSERT INTO arrtest_s VALUES ('[0:4]={1,2,3,4,5}', '[0:2][0:2]={{1,2,3}, {4,5,6}, {7,8,9}}');
+
+SELECT * FROM arrtest_s;
+SELECT a[:3], b[:2][:2] FROM arrtest_s;
+SELECT a[2:], b[2:][2:] FROM arrtest_s;
+SELECT a[:], b[:] FROM arrtest_s;
+
+-- updates
+UPDATE arrtest_s SET a[:3] = '{11, 12, 13}', b[:2][:2] = '{{11,12}, {14,15}}'
+  WHERE array_lower(a,1) = 1;
+SELECT * FROM arrtest_s;
+UPDATE arrtest_s SET a[3:] = '{23, 24, 25}', b[2:][2:] = '{{25,26}, {28,29}}';
+SELECT * FROM arrtest_s;
+UPDATE arrtest_s SET a[:] = '{11, 12, 13, 14, 15}';
+SELECT * FROM arrtest_s;
+UPDATE arrtest_s SET a[:] = '{23, 24, 25}';  -- fail, too small
+INSERT INTO arrtest_s VALUES(NULL, NULL);
+UPDATE arrtest_s SET a[:] = '{11, 12, 13, 14, 15}';  -- fail, no good with null
+
+-- we want to work with a point_tbl that includes a null
+CREATE TEMP TABLE point_tbl AS SELECT * FROM public.point_tbl;
+INSERT INTO POINT_TBL(f1) VALUES (NULL);
+
+-- check with fixed-length-array type, such as point
+SELECT f1[0:1] FROM POINT_TBL;
+SELECT f1[0:] FROM POINT_TBL;
+SELECT f1[:1] FROM POINT_TBL;
+SELECT f1[:] FROM POINT_TBL;
+
+-- subscript assignments to fixed-width result in NULL if previous value is NULL
+UPDATE point_tbl SET f1[0] = 10 WHERE f1 IS NULL RETURNING *;
+INSERT INTO point_tbl(f1[0]) VALUES(0) RETURNING *;
+-- NULL assignments get ignored
+UPDATE point_tbl SET f1[0] = NULL WHERE f1::text = '(10,10)'::point::text RETURNING *;
+-- but non-NULL subscript assignments work
+UPDATE point_tbl SET f1[0] = -10, f1[1] = -10 WHERE f1::text = '(10,10)'::point::text RETURNING *;
+-- but not to expand the range
+UPDATE point_tbl SET f1[3] = 10 WHERE f1::text = '(-10,-10)'::point::text RETURNING *;
+
+--
+-- test array extension
+--
+CREATE TEMP TABLE arrtest1 (i int[], t text[]);
+insert into arrtest1 values(array[1,2,null,4], array['one','two',null,'four']);
+select * from arrtest1;
+update arrtest1 set i[2] = 22, t[2] = 'twenty-two';
+select * from arrtest1;
+update arrtest1 set i[5] = 5, t[5] = 'five';
+select * from arrtest1;
+update arrtest1 set i[8] = 8, t[8] = 'eight';
+select * from arrtest1;
+update arrtest1 set i[0] = 0, t[0] = 'zero';
+select * from arrtest1;
+update arrtest1 set i[-3] = -3, t[-3] = 'minus-three';
+select * from arrtest1;
+update arrtest1 set i[0:2] = array[10,11,12], t[0:2] = array['ten','eleven','twelve'];
+select * from arrtest1;
+update arrtest1 set i[8:10] = array[18,null,20], t[8:10] = array['p18',null,'p20'];
+select * from arrtest1;
+update arrtest1 set i[11:12] = array[null,22], t[11:12] = array[null,'p22'];
+select * from arrtest1;
+update arrtest1 set i[15:16] = array[null,26], t[15:16] = array[null,'p26'];
+select * from arrtest1;
+update arrtest1 set i[-5:-3] = array[-15,-14,-13], t[-5:-3] = array['m15','m14','m13'];
+select * from arrtest1;
+update arrtest1 set i[-7:-6] = array[-17,null], t[-7:-6] = array['m17',null];
+select * from arrtest1;
+update arrtest1 set i[-12:-10] = array[-22,null,-20], t[-12:-10] = array['m22',null,'m20'];
+select * from arrtest1;
+delete from arrtest1;
+insert into arrtest1 values(array[1,2,null,4], array['one','two',null,'four']);
+select * from arrtest1;
+update arrtest1 set i[0:5] = array[0,1,2,null,4,5], t[0:5] = array['z','p1','p2',null,'p4','p5'];
+select * from arrtest1;
+
+--
+-- array expressions and operators
+--
+
+-- table creation and INSERTs
+CREATE TEMP TABLE arrtest2 (i integer ARRAY[4], f float8[], n numeric[], t text[], d timestamp[]);
+INSERT INTO arrtest2 VALUES(
+  ARRAY[[[113,142],[1,147]]],
+  ARRAY[1.1,1.2,1.3]::float8[],
+  ARRAY[1.1,1.2,1.3],
+  ARRAY[[['aaa','aab'],['aba','abb'],['aca','acb']],[['baa','bab'],['bba','bbb'],['bca','bcb']]],
+  ARRAY['19620326','19931223','19970117']::timestamp[]
+);
+
+-- some more test data
+CREATE TEMP TABLE arrtest_f (f0 int, f1 text, f2 float8);
+insert into arrtest_f values(1,'cat1',1.21);
+insert into arrtest_f values(2,'cat1',1.24);
+insert into arrtest_f values(3,'cat1',1.18);
+insert into arrtest_f values(4,'cat1',1.26);
+insert into arrtest_f values(5,'cat1',1.15);
+insert into arrtest_f values(6,'cat2',1.15);
+insert into arrtest_f values(7,'cat2',1.26);
+insert into arrtest_f values(8,'cat2',1.32);
+insert into arrtest_f values(9,'cat2',1.30);
+
+CREATE TEMP TABLE arrtest_i (f0 int, f1 text, f2 int);
+insert into arrtest_i values(1,'cat1',21);
+insert into arrtest_i values(2,'cat1',24);
+insert into arrtest_i values(3,'cat1',18);
+insert into arrtest_i values(4,'cat1',26);
+insert into arrtest_i values(5,'cat1',15);
+insert into arrtest_i values(6,'cat2',15);
+insert into arrtest_i values(7,'cat2',26);
+insert into arrtest_i values(8,'cat2',32);
+insert into arrtest_i values(9,'cat2',30);
+
+-- expressions
+SELECT t.f[1][3][1] AS "131", t.f[2][2][1] AS "221" FROM (
+  SELECT ARRAY[[[111,112],[121,122],[131,132]],[[211,212],[221,122],[231,232]]] AS f
+) AS t;
+SELECT ARRAY[[[[[['hello'],['world']]]]]];
+SELECT ARRAY[ARRAY['hello'],ARRAY['world']];
+SELECT ARRAY(select f2 from arrtest_f order by f2) AS "ARRAY";
+
+-- with nulls
+SELECT '{1,null,3}'::int[];
+SELECT ARRAY[1,NULL,3];
+
+-- functions
+SELECT array_append(array[42], 6) AS "{42,6}";
+SELECT array_prepend(6, array[42]) AS "{6,42}";
+SELECT array_cat(ARRAY[1,2], ARRAY[3,4]) AS "{1,2,3,4}";
+SELECT array_cat(ARRAY[1,2], ARRAY[[3,4],[5,6]]) AS "{{1,2},{3,4},{5,6}}";
+SELECT array_cat(ARRAY[[3,4],[5,6]], ARRAY[1,2]) AS "{{3,4},{5,6},{1,2}}";
+
+SELECT array_position(ARRAY[1,2,3,4,5], 4);
+SELECT array_position(ARRAY[5,3,4,2,1], 4);
+SELECT array_position(ARRAY[[1,2],[3,4]], 3);
+SELECT array_position(ARRAY['sun','mon','tue','wed','thu','fri','sat'], 'mon');
+SELECT array_position(ARRAY['sun','mon','tue','wed','thu','fri','sat'], 'sat');
+SELECT array_position(ARRAY['sun','mon','tue','wed','thu','fri','sat'], NULL);
+SELECT array_position(ARRAY['sun','mon','tue','wed','thu',NULL,'fri','sat'], NULL);
+SELECT array_position(ARRAY['sun','mon','tue','wed','thu',NULL,'fri','sat'], 'sat');
+
+SELECT array_positions(NULL, 10);
+SELECT array_positions(NULL, NULL::int);
+SELECT array_positions(ARRAY[1,2,3,4,5,6,1,2,3,4,5,6], 4);
+SELECT array_positions(ARRAY[[1,2],[3,4]], 4);
+SELECT array_positions(ARRAY[1,2,3,4,5,6,1,2,3,4,5,6], NULL);
+SELECT array_positions(ARRAY[1,2,3,NULL,5,6,1,2,3,NULL,5,6], NULL);
+SELECT array_length(array_positions(ARRAY(SELECT 'AAAAAAAAAAAAAAAAAAAAAAAAA'::text || i % 10
+                                          FROM generate_series(1,100) g(i)),
+                                  'AAAAAAAAAAAAAAAAAAAAAAAAA5'), 1);
+
+DO $$
+DECLARE
+  o int;
+  a int[] := ARRAY[1,2,3,2,3,1,2];
+BEGIN
+  o := array_position(a, 2);
+  WHILE o IS NOT NULL
+  LOOP
+    RAISE NOTICE '%', o;
+    o := array_position(a, 2, o + 1);
+  END LOOP;
+END
+$$ LANGUAGE plpgsql;
+
+SELECT array_position('[2:4]={1,2,3}'::int[], 1);
+SELECT array_positions('[2:4]={1,2,3}'::int[], 1);
+
+SELECT
+    array_position(ids, (1, 1)),
+    array_positions(ids, (1, 1))
+        FROM
+(VALUES
+    (ARRAY[(0, 0), (1, 1)]),
+    (ARRAY[(1, 1)])
+) AS f (ids);
+
+-- operators
+SELECT a FROM arrtest WHERE b = ARRAY[[[113,142],[1,147]]];
+SELECT NOT ARRAY[1.1,1.2,1.3] = ARRAY[1.1,1.2,1.3] AS "FALSE";
+SELECT ARRAY[1,2] || 3 AS "{1,2,3}";
+SELECT 0 || ARRAY[1,2] AS "{0,1,2}";
+SELECT ARRAY[1,2] || ARRAY[3,4] AS "{1,2,3,4}";
+SELECT ARRAY[[['hello','world']]] || ARRAY[[['happy','birthday']]] AS "ARRAY";
+SELECT ARRAY[[1,2],[3,4]] || ARRAY[5,6] AS "{{1,2},{3,4},{5,6}}";
+SELECT ARRAY[0,0] || ARRAY[1,1] || ARRAY[2,2] AS "{0,0,1,1,2,2}";
+SELECT 0 || ARRAY[1,2] || 3 AS "{0,1,2,3}";
+SELECT ARRAY[1.1] || ARRAY[2,3,4];
+SELECT array_agg(x) || array_agg(x) FROM (VALUES (ROW(1,2)), (ROW(3,4))) v(x);
+SELECT ROW(1,2) || array_agg(x) FROM (VALUES (ROW(3,4)), (ROW(5,6))) v(x);
+
+SELECT * FROM array_op_test WHERE i @> '{32}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i && '{32}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i @> '{17}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i && '{17}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i @> '{32,17}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i && '{32,17}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i <@ '{38,34,32,89}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i = '{}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i @> '{}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i && '{}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i <@ '{}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i = '{NULL}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i @> '{NULL}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i && '{NULL}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE i <@ '{NULL}' ORDER BY seqno;
+
+SELECT * FROM array_op_test WHERE t @> '{AAAAAAAA72908}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t && '{AAAAAAAA72908}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t @> '{AAAAAAAAAA646}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t && '{AAAAAAAAAA646}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t @> '{AAAAAAAA72908,AAAAAAAAAA646}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t && '{AAAAAAAA72908,AAAAAAAAAA646}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t <@ '{AAAAAAAA72908,AAAAAAAAAAAAAAAAAAA17075,AA88409,AAAAAAAAAAAAAAAAAA36842,AAAAAAA48038,AAAAAAAAAAAAAA10611}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t = '{}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t @> '{}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t && '{}' ORDER BY seqno;
+SELECT * FROM array_op_test WHERE t <@ '{}' ORDER BY seqno;
+
+-- array casts
+SELECT ARRAY[1,2,3]::text[]::int[]::float8[] AS "{1,2,3}";
+SELECT pg_typeof(ARRAY[1,2,3]::text[]::int[]::float8[]) AS "double precision[]";
+SELECT ARRAY[['a','bc'],['def','hijk']]::text[]::varchar[] AS "{{a,bc},{def,hijk}}";
+SELECT pg_typeof(ARRAY[['a','bc'],['def','hijk']]::text[]::varchar[]) AS "character varying[]";
+SELECT CAST(ARRAY[[[[[['a','bb','ccc']]]]]] as text[]) as "{{{{{{a,bb,ccc}}}}}}";
+SELECT NULL::text[]::int[] AS "NULL";
+
+-- scalar op any/all (array)
+select 33 = any ('{1,2,3}');
+select 33 = any ('{1,2,33}');
+select 33 = all ('{1,2,33}');
+select 33 >= all ('{1,2,33}');
+-- boundary cases
+select null::int >= all ('{1,2,33}');
+select null::int >= all ('{}');
+select null::int >= any ('{}');
+-- cross-datatype
+select 33.4 = any (array[1,2,3]);
+select 33.4 > all (array[1,2,3]);
+-- errors
+select 33 * any ('{1,2,3}');
+select 33 * any (44);
+-- nulls
+select 33 = any (null::int[]);
+select null::int = any ('{1,2,3}');
+select 33 = any ('{1,null,3}');
+select 33 = any ('{1,null,33}');
+select 33 = all (null::int[]);
+select null::int = all ('{1,2,3}');
+select 33 = all ('{1,null,3}');
+select 33 = all ('{33,null,33}');
+-- nulls later in the bitmap
+SELECT -1 != ALL(ARRAY(SELECT NULLIF(g.i, 900) FROM generate_series(1,1000) g(i)));
+
+-- test indexes on arrays
+create temp table arr_tbl (f1 int[] unique);
+insert into arr_tbl values ('{1,2,3}');
+insert into arr_tbl values ('{1,2}');
+-- failure expected:
+insert into arr_tbl values ('{1,2,3}');
+insert into arr_tbl values ('{2,3,4}');
+insert into arr_tbl values ('{1,5,3}');
+insert into arr_tbl values ('{1,2,10}');
+
+set enable_seqscan to off;
+set enable_bitmapscan to off;
+select * from arr_tbl where f1 > '{1,2,3}' and f1 <= '{1,5,3}';
+select * from arr_tbl where f1 >= '{1,2,3}' and f1 < '{1,5,3}';
+
+-- test ON CONFLICT DO UPDATE with arrays
+create temp table arr_pk_tbl (pk int4 primary key, f1 int[]);
+insert into arr_pk_tbl values (1, '{1,2,3}');
+insert into arr_pk_tbl values (1, '{3,4,5}') on conflict (pk)
+  do update set f1[1] = excluded.f1[1], f1[3] = excluded.f1[3]
+  returning pk, f1;
+insert into arr_pk_tbl(pk, f1[1:2]) values (1, '{6,7,8}') on conflict (pk)
+  do update set f1[1] = excluded.f1[1],
+    f1[2] = excluded.f1[2],
+    f1[3] = excluded.f1[3]
+  returning pk, f1;
+
+-- note: if above selects don't produce the expected tuple order,
+-- then you didn't get an indexscan plan, and something is busted.
+reset enable_seqscan;
+reset enable_bitmapscan;
+
+-- test subscript overflow detection
+
+-- The normal error message includes a platform-dependent limit,
+-- so suppress it to avoid needing multiple expected-files.
+\set VERBOSITY sqlstate
+
+insert into arr_pk_tbl values(10, '[-2147483648:-2147483647]={1,2}');
+update arr_pk_tbl set f1[2147483647] = 42 where pk = 10;
+update arr_pk_tbl set f1[2147483646:2147483647] = array[4,2] where pk = 10;
+
+-- also exercise the expanded-array case
+do $$ declare a int[];
+begin
+  a := '[-2147483648:-2147483647]={1,2}'::int[];
+  a[2147483647] := 42;
+end $$;
+
+\set VERBOSITY default
+
+-- test [not] (like|ilike) (any|all) (...)
+select 'foo' like any (array['%a', '%o']); -- t
+select 'foo' like any (array['%a', '%b']); -- f
+select 'foo' like all (array['f%', '%o']); -- t
+select 'foo' like all (array['f%', '%b']); -- f
+select 'foo' not like any (array['%a', '%b']); -- t
+select 'foo' not like all (array['%a', '%o']); -- f
+select 'foo' ilike any (array['%A', '%O']); -- t
+select 'foo' ilike all (array['F%', '%O']); -- t
+
+--
+-- General array parser tests
+--
+
+-- none of the following should be accepted
+select '{{1,{2}},{2,3}}'::text[];
+select '{{},{}}'::text[];
+select E'{{1,2},\\{2,3}}'::text[];
+select '{{"1 2" x},{3}}'::text[];
+select '{}}'::text[];
+select '{ }}'::text[];
+select array[];
+-- none of the above should be accepted
+
+-- all of the following should be accepted
+select '{}'::text[];
+select '{{{1,2,3,4},{2,3,4,5}},{{3,4,5,6},{4,5,6,7}}}'::text[];
+select '{0 second  ,0 second}'::interval[];
+select '{ { "," } , { 3 } }'::text[];
+select '  {   {  "  0 second  "   ,  0 second  }   }'::text[];
+select '{
+           0 second,
+           @ 1 hour @ 42 minutes @ 20 seconds
+         }'::interval[];
+select array[]::text[];
+select '[0:1]={1.1,2.2}'::float8[];
+-- all of the above should be accepted
+
+-- tests for array aggregates
+CREATE TEMP TABLE arraggtest ( f1 INT[], f2 TEXT[][], f3 FLOAT[]);
+
+INSERT INTO arraggtest (f1, f2, f3) VALUES
+('{1,2,3,4}','{{grey,red},{blue,blue}}','{1.6, 0.0}');
+INSERT INTO arraggtest (f1, f2, f3) VALUES
+('{1,2,3}','{{grey,red},{grey,blue}}','{1.6}');
+SELECT max(f1), min(f1), max(f2), min(f2), max(f3), min(f3) FROM arraggtest;
+
+INSERT INTO arraggtest (f1, f2, f3) VALUES
+('{3,3,2,4,5,6}','{{white,yellow},{pink,orange}}','{2.1,3.3,1.8,1.7,1.6}');
+SELECT max(f1), min(f1), max(f2), min(f2), max(f3), min(f3) FROM arraggtest;
+
+INSERT INTO arraggtest (f1, f2, f3) VALUES
+('{2}','{{black,red},{green,orange}}','{1.6,2.2,2.6,0.4}');
+SELECT max(f1), min(f1), max(f2), min(f2), max(f3), min(f3) FROM arraggtest;
+
+INSERT INTO arraggtest (f1, f2, f3) VALUES
+('{4,2,6,7,8,1}','{{red},{black},{purple},{blue},{blue}}',NULL);
+SELECT max(f1), min(f1), max(f2), min(f2), max(f3), min(f3) FROM arraggtest;
+
+INSERT INTO arraggtest (f1, f2, f3) VALUES
+('{}','{{pink,white,blue,red,grey,orange}}','{2.1,1.87,1.4,2.2}');
+SELECT max(f1), min(f1), max(f2), min(f2), max(f3), min(f3) FROM arraggtest;
+
+-- A few simple tests for arrays of composite types
+
+create type comptype as (f1 int, f2 text);
+
+create table comptable (c1 comptype, c2 comptype[]);
+
+-- XXX would like to not have to specify row() construct types here ...
+insert into comptable
+  values (row(1,'foo'), array[row(2,'bar')::comptype, row(3,'baz')::comptype]);
+
+-- check that implicitly named array type _comptype isn't a problem
+create type _comptype as enum('fooey');
+
+select * from comptable;
+select c2[2].f2 from comptable;
+
+drop type _comptype;
+drop table comptable;
+drop type comptype;
+
+create or replace function unnest1(anyarray)
+returns setof anyelement as $$
+select $1[s] from generate_subscripts($1,1) g(s);
+$$ language sql immutable;
+
+create or replace function unnest2(anyarray)
+returns setof anyelement as $$
+select $1[s1][s2] from generate_subscripts($1,1) g1(s1),
+                   generate_subscripts($1,2) g2(s2);
+$$ language sql immutable;
+
+select * from unnest1(array[1,2,3]);
+select * from unnest2(array[[1,2,3],[4,5,6]]);
+
+drop function unnest1(anyarray);
+drop function unnest2(anyarray);
+
+select array_fill(null::integer, array[3,3],array[2,2]);
+select array_fill(null::integer, array[3,3]);
+select array_fill(null::text, array[3,3],array[2,2]);
+select array_fill(null::text, array[3,3]);
+select array_fill(7, array[3,3],array[2,2]);
+select array_fill(7, array[3,3]);
+select array_fill('juhu'::text, array[3,3],array[2,2]);
+select array_fill('juhu'::text, array[3,3]);
+select a, a = '{}' as is_eq, array_dims(a)
+  from (select array_fill(42, array[0]) as a) ss;
+select a, a = '{}' as is_eq, array_dims(a)
+  from (select array_fill(42, '{}') as a) ss;
+select a, a = '{}' as is_eq, array_dims(a)
+  from (select array_fill(42, '{}', '{}') as a) ss;
+-- raise exception
+select array_fill(1, null, array[2,2]);
+select array_fill(1, array[2,2], null);
+select array_fill(1, array[2,2], '{}');
+select array_fill(1, array[3,3], array[1,1,1]);
+select array_fill(1, array[1,2,null]);
+select array_fill(1, array[[1,2],[3,4]]);
+
+select string_to_array('1|2|3', '|');
+select string_to_array('1|2|3|', '|');
+select string_to_array('1||2|3||', '||');
+select string_to_array('1|2|3', '');
+select string_to_array('', '|');
+select string_to_array('1|2|3', NULL);
+select string_to_array(NULL, '|') IS NULL;
+select string_to_array('abc', '');
+select string_to_array('abc', '', 'abc');
+select string_to_array('abc', ',');
+select string_to_array('abc', ',', 'abc');
+select string_to_array('1,2,3,4,,6', ',');
+select string_to_array('1,2,3,4,,6', ',', '');
+select string_to_array('1,2,3,4,*,6', ',', '*');
+
+select v, v is null as "is null" from string_to_table('1|2|3', '|') g(v);
+select v, v is null as "is null" from string_to_table('1|2|3|', '|') g(v);
+select v, v is null as "is null" from string_to_table('1||2|3||', '||') g(v);
+select v, v is null as "is null" from string_to_table('1|2|3', '') g(v);
+select v, v is null as "is null" from string_to_table('', '|') g(v);
+select v, v is null as "is null" from string_to_table('1|2|3', NULL) g(v);
+select v, v is null as "is null" from string_to_table(NULL, '|') g(v);
+select v, v is null as "is null" from string_to_table('abc', '') g(v);
+select v, v is null as "is null" from string_to_table('abc', '', 'abc') g(v);
+select v, v is null as "is null" from string_to_table('abc', ',') g(v);
+select v, v is null as "is null" from string_to_table('abc', ',', 'abc') g(v);
+select v, v is null as "is null" from string_to_table('1,2,3,4,,6', ',') g(v);
+select v, v is null as "is null" from string_to_table('1,2,3,4,,6', ',', '') g(v);
+select v, v is null as "is null" from string_to_table('1,2,3,4,*,6', ',', '*') g(v);
+
+select array_to_string(NULL::int4[], ',') IS NULL;
+select array_to_string('{}'::int4[], ',');
+select array_to_string(array[1,2,3,4,NULL,6], ',');
+select array_to_string(array[1,2,3,4,NULL,6], ',', '*');
+select array_to_string(array[1,2,3,4,NULL,6], NULL);
+select array_to_string(array[1,2,3,4,NULL,6], ',', NULL);
+
+select array_to_string(string_to_array('1|2|3', '|'), '|');
+
+select array_length(array[1,2,3], 1);
+select array_length(array[[1,2,3], [4,5,6]], 0);
+select array_length(array[[1,2,3], [4,5,6]], 1);
+select array_length(array[[1,2,3], [4,5,6]], 2);
+select array_length(array[[1,2,3], [4,5,6]], 3);
+
+select cardinality(NULL::int[]);
+select cardinality('{}'::int[]);
+select cardinality(array[1,2,3]);
+select cardinality('[2:4]={5,6,7}'::int[]);
+select cardinality('{{1,2}}'::int[]);
+select cardinality('{{1,2},{3,4},{5,6}}'::int[]);
+select cardinality('{{{1,9},{5,6}},{{2,3},{3,4}}}'::int[]);
+
+-- array_agg(anynonarray)
+select array_agg(unique1) from (select unique1 from tenk1 where unique1 < 15 order by unique1) ss;
+select array_agg(ten) from (select ten from tenk1 where unique1 < 15 order by unique1) ss;
+select array_agg(nullif(ten, 4)) from (select ten from tenk1 where unique1 < 15 order by unique1) ss;
+select array_agg(unique1) from tenk1 where unique1 < -15;
+
+-- array_agg(anyarray)
+select array_agg(ar)
+  from (values ('{1,2}'::int[]), ('{3,4}'::int[])) v(ar);
+select array_agg(distinct ar order by ar desc)
+  from (select array[i / 2] from generate_series(1,10) a(i)) b(ar);
+select array_agg(ar)
+  from (select array_agg(array[i, i+1, i-1])
+        from generate_series(1,2) a(i)) b(ar);
+select array_agg(array[i+1.2, i+1.3, i+1.4]) from generate_series(1,3) g(i);
+select array_agg(array['Hello', i::text]) from generate_series(9,11) g(i);
+select array_agg(array[i, nullif(i, 3), i+1]) from generate_series(1,4) g(i);
+-- errors
+select array_agg('{}'::int[]) from generate_series(1,2);
+select array_agg(null::int[]) from generate_series(1,2);
+select array_agg(ar)
+  from (values ('{1,2}'::int[]), ('{3}'::int[])) v(ar);
+
+select unnest(array[1,2,3]);
+select * from unnest(array[1,2,3]);
+select unnest(array[1,2,3,4.5]::float8[]);
+select unnest(array[1,2,3,4.5]::numeric[]);
+select unnest(array[1,2,3,null,4,null,null,5,6]);
+select unnest(array[1,2,3,null,4,null,null,5,6]::text[]);
+select abs(unnest(array[1,2,null,-3]));
+select array_remove(array[1,2,2,3], 2);
+select array_remove(array[1,2,2,3], 5);
+select array_remove(array[1,NULL,NULL,3], NULL);
+select array_remove(array['A','CC','D','C','RR'], 'RR');
+select array_remove(array[1.0, 2.1, 3.3], 1);
+select array_remove('{{1,2,2},{1,4,3}}', 2); -- not allowed
+select array_remove(array['X','X','X'], 'X') = '{}';
+select array_replace(array[1,2,5,4],5,3);
+select array_replace(array[1,2,5,4],5,NULL);
+select array_replace(array[1,2,NULL,4,NULL],NULL,5);
+select array_replace(array['A','B','DD','B'],'B','CC');
+select array_replace(array[1,NULL,3],NULL,NULL);
+select array_replace(array['AB',NULL,'CDE'],NULL,'12');
+
+-- array(select array-value ...)
+select array(select array[i,i/2] from generate_series(1,5) i);
+select array(select array['Hello', i::text] from generate_series(9,11) i);
+
+-- Insert/update on a column that is array of composite
+
+create temp table t1 (f1 int8_tbl[]);
+insert into t1 (f1[5].q1) values(42);
+select * from t1;
+update t1 set f1[5].q2 = 43;
+select * from t1;
+
+-- Check that arrays of composites are safely detoasted when needed
+
+create temp table src (f1 text);
+insert into src
+  select string_agg(random()::text,'') from generate_series(1,10000);
+create type textandtext as (c1 text, c2 text);
+create temp table dest (f1 textandtext[]);
+insert into dest select array[row(f1,f1)::textandtext] from src;
+select length(md5((f1[1]).c2)) from dest;
+delete from src;
+select length(md5((f1[1]).c2)) from dest;
+truncate table src;
+drop table src;
+select length(md5((f1[1]).c2)) from dest;
+drop table dest;
+drop type textandtext;
+
+-- Tests for polymorphic-array form of width_bucket()
+
+-- this exercises the varwidth and float8 code paths
+SELECT
+    op,
+    width_bucket(op::numeric, ARRAY[1, 3, 5, 10.0]::numeric[]) AS wb_n1,
+    width_bucket(op::numeric, ARRAY[0, 5.5, 9.99]::numeric[]) AS wb_n2,
+    width_bucket(op::numeric, ARRAY[-6, -5, 2.0]::numeric[]) AS wb_n3,
+    width_bucket(op::float8, ARRAY[1, 3, 5, 10.0]::float8[]) AS wb_f1,
+    width_bucket(op::float8, ARRAY[0, 5.5, 9.99]::float8[]) AS wb_f2,
+    width_bucket(op::float8, ARRAY[-6, -5, 2.0]::float8[]) AS wb_f3
+FROM (VALUES
+  (-5.2),
+  (-0.0000000001),
+  (0.000000000001),
+  (1),
+  (1.99999999999999),
+  (2),
+  (2.00000000000001),
+  (3),
+  (4),
+  (4.5),
+  (5),
+  (5.5),
+  (6),
+  (7),
+  (8),
+  (9),
+  (9.99999999999999),
+  (10),
+  (10.0000000000001)
+) v(op);
+
+-- ensure float8 path handles NaN properly
+SELECT
+    op,
+    width_bucket(op, ARRAY[1, 3, 9, 'NaN', 'NaN']::float8[]) AS wb
+FROM (VALUES
+  (-5.2::float8),
+  (4::float8),
+  (77::float8),
+  ('NaN'::float8)
+) v(op);
+
+-- these exercise the generic fixed-width code path
+SELECT
+    op,
+    width_bucket(op, ARRAY[1, 3, 5, 10]) AS wb_1
+FROM generate_series(0,11) as op;
+
+SELECT width_bucket(now(),
+                    array['yesterday', 'today', 'tomorrow']::timestamptz[]);
+
+-- corner cases
+SELECT width_bucket(5, ARRAY[3]);
+SELECT width_bucket(5, '{}');
+
+-- error cases
+SELECT width_bucket('5'::text, ARRAY[3, 4]::integer[]);
+SELECT width_bucket(5, ARRAY[3, 4, NULL]);
+SELECT width_bucket(5, ARRAY[ARRAY[1, 2], ARRAY[3, 4]]);
+
+-- trim_array
+
+SELECT arr, trim_array(arr, 2)
+FROM
+(VALUES ('{1,2,3,4,5,6}'::bigint[]),
+        ('{1,2}'),
+        ('[10:16]={1,2,3,4,5,6,7}'),
+        ('[-15:-10]={1,2,3,4,5,6}'),
+        ('{{1,10},{2,20},{3,30},{4,40}}')) v(arr);
+
+SELECT trim_array(ARRAY[1, 2, 3], -1); -- fail
+SELECT trim_array(ARRAY[1, 2, 3], 10); -- fail
+SELECT trim_array(ARRAY[]::int[], 1); -- fail