mirror of
https://github.com/postgres/postgres.git
synced 2025-04-25 21:42:33 +03:00
84a42560c8
These functions support removing or replacing array element value(s) matching a given search value. Although intended mainly to support a future array-foreign-key feature, they seem useful in their own right. Marco Nenciarini and Gabriele Bartolini, reviewed by Alex Hunsaker
454 lines
16 KiB
PL/PgSQL
454 lines
16 KiB
PL/PgSQL
--
|
|
-- ARRAYS
|
|
--
|
|
|
|
CREATE TABLE arrtest (
|
|
a int2[],
|
|
b int4[][][],
|
|
c name[],
|
|
d text[][],
|
|
e float8[],
|
|
f char(5)[],
|
|
g varchar(5)[]
|
|
);
|
|
|
|
--
|
|
-- 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}');
|
|
|
|
|
|
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;
|
|
|
|
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 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}}";
|
|
|
|
-- 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}";
|
|
|
|
ANALYZE array_op_test;
|
|
|
|
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 ARRAY[1,2,3]::text[]::int[]::float8[] is of (float8[]) as "TRUE";
|
|
SELECT ARRAY[['a','bc'],['def','hijk']]::text[]::varchar[] AS "{{a,bc},{def,hijk}}";
|
|
SELECT ARRAY[['a','bc'],['def','hijk']]::text[]::varchar[] is of (varchar[]) as "TRUE";
|
|
SELECT CAST(ARRAY[[[[[['a','bb','ccc']]]]]] as text[]) as "{{{{{{a,bb,ccc}}}}}}";
|
|
|
|
-- 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}');
|
|
|
|
-- 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}';
|
|
-- 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 [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]);
|
|
-- raise exception
|
|
select array_fill(1, null, array[2,2]);
|
|
select array_fill(1, array[2,2], null);
|
|
select array_fill(1, array[3,3], array[1,1,1]);
|
|
select array_fill(1, array[1,2,null]);
|
|
|
|
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 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 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;
|
|
|
|
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 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('{{1,2,2},{1,4,3}}', 2); -- not allowed
|
|
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');
|
|
|
|
-- 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;
|