1997-04-27 20:13:54 +02:00
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--
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-- ARRAYS
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--
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2000-01-05 18:32:29 +01:00
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2001-05-21 18:54:46 +02:00
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CREATE TABLE arrtest (
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a int2[],
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b int4[][][],
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c name[],
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d text[][],
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e float8[],
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f char(5)[],
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g varchar(5)[]
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);
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--
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-- only this array as a 0-based 'e', the others are 1-based.
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-- 'e' is also a large object.
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--
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INSERT INTO arrtest (a[5], b[2][1][2], c, d, f, g)
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2002-08-27 22:29:11 +02:00
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VALUES ('{1,2,3,4,5}', '{{{0,0},{1,2}}}', '{}', '{}', '{}', '{}');
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2001-05-21 18:54:46 +02:00
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UPDATE arrtest SET e[0] = '1.1';
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UPDATE arrtest SET e[1] = '2.2';
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INSERT INTO arrtest (f)
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VALUES ('{"too long"}');
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INSERT INTO arrtest (a, b[2][2][1], c, d, e, f, g)
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VALUES ('{11,12,23}', '{{3,4},{4,5}}', '{"foobar"}',
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'{{"elt1", "elt2"}}', '{"3.4", "6.7"}',
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'{"abc","abcde"}', '{"abc","abcde"}');
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INSERT INTO arrtest (a, b[1][2][2], c, d[2][1])
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VALUES ('{}', '{3,4}', '{foo,bar}', '{bar,foo}');
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1997-04-27 20:13:54 +02:00
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SELECT * FROM arrtest;
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SELECT arrtest.a[1],
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arrtest.b[1][1][1],
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arrtest.c[1],
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arrtest.d[1][1],
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arrtest.e[0]
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FROM arrtest;
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2000-01-15 20:11:40 +01:00
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SELECT a[1], b[1][1][1], c[1], d[1][1], e[0]
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FROM arrtest;
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SELECT a[1:3],
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b[1:1][1:2][1:2],
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c[1:2],
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d[1:1][1:2]
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1997-04-27 20:13:54 +02:00
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FROM arrtest;
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2000-07-23 03:36:05 +02:00
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SELECT array_dims(a) AS a,array_dims(b) AS b,array_dims(c) AS c
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FROM arrtest;
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1997-04-27 20:13:54 +02:00
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-- returns nothing
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SELECT *
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FROM arrtest
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2000-01-15 20:11:40 +01:00
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WHERE a[1] < 5 and
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c = '{"foobar"}'::_name;
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UPDATE arrtest
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2000-07-23 03:36:05 +02:00
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SET a[1:2] = '{16,25}'
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WHERE NOT a = '{}'::_int2;
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UPDATE arrtest
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SET b[1:1][1:1][1:2] = '{113, 117}',
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b[1:1][1:2][2:2] = '{142, 147}'
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WHERE array_dims(b) = '[1:1][1:2][1:2]';
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UPDATE arrtest
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SET c[2:2] = '{"new_word"}'
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WHERE array_dims(c) is not null;
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SELECT a,b,c FROM arrtest;
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2000-01-15 20:11:40 +01:00
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SELECT a[1:3],
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b[1:1][1:2][1:2],
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c[1:2],
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d[1:1][2:2]
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1997-04-27 20:13:54 +02:00
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FROM arrtest;
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2003-04-09 01:20:04 +02:00
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--
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-- array expressions and operators
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--
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-- table creation and INSERTs
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CREATE TEMP TABLE arrtest2 (i integer ARRAY[4], f float8[], n numeric[], t text[], d timestamp[]);
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INSERT INTO arrtest2 VALUES(
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ARRAY[[[113,142],[1,147]]],
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ARRAY[1.1,1.2,1.3]::float8[],
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ARRAY[1.1,1.2,1.3],
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ARRAY[[['aaa','aab'],['aba','abb'],['aca','acb']],[['baa','bab'],['bba','bbb'],['bca','bcb']]],
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ARRAY['19620326','19931223','19970117']::timestamp[]
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);
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-- some more test data
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CREATE TEMP TABLE arrtest_f (f0 int, f1 text, f2 float8);
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insert into arrtest_f values(1,'cat1',1.21);
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insert into arrtest_f values(2,'cat1',1.24);
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insert into arrtest_f values(3,'cat1',1.18);
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insert into arrtest_f values(4,'cat1',1.26);
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insert into arrtest_f values(5,'cat1',1.15);
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insert into arrtest_f values(6,'cat2',1.15);
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insert into arrtest_f values(7,'cat2',1.26);
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insert into arrtest_f values(8,'cat2',1.32);
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insert into arrtest_f values(9,'cat2',1.30);
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CREATE TEMP TABLE arrtest_i (f0 int, f1 text, f2 int);
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insert into arrtest_i values(1,'cat1',21);
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insert into arrtest_i values(2,'cat1',24);
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insert into arrtest_i values(3,'cat1',18);
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insert into arrtest_i values(4,'cat1',26);
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insert into arrtest_i values(5,'cat1',15);
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insert into arrtest_i values(6,'cat2',15);
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insert into arrtest_i values(7,'cat2',26);
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insert into arrtest_i values(8,'cat2',32);
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insert into arrtest_i values(9,'cat2',30);
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-- expressions
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SELECT t.f[1][3][1] AS "131", t.f[2][2][1] AS "221" FROM (
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SELECT ARRAY[[[111,112],[121,122],[131,132]],[[211,212],[221,122],[231,232]]] AS f
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) AS t;
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SELECT ARRAY[[[[[['hello'],['world']]]]]];
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SELECT ARRAY[ARRAY['hello'],ARRAY['world']];
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SELECT ARRAY(select f2 from arrtest_f order by f2) AS "ARRAY";
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-- functions
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2003-06-27 02:33:26 +02:00
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SELECT array_append(array[42], 6) AS "{42,6}";
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SELECT array_prepend(6, array[42]) AS "{6,42}";
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2003-04-09 01:20:04 +02:00
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SELECT array_cat(ARRAY[1,2], ARRAY[3,4]) AS "{{1,2},{3,4}}";
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SELECT array_cat(ARRAY[1,2], ARRAY[[3,4],[5,6]]) AS "{{1,2},{3,4},{5,6}}";
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SELECT array_cat(ARRAY[[3,4],[5,6]], ARRAY[1,2]) AS "{{3,4},{5,6},{1,2}}";
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-- operators
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SELECT a FROM arrtest WHERE b = ARRAY[[[113,142],[1,147]]];
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SELECT NOT ARRAY[1.1,1.2,1.3] = ARRAY[1.1,1.2,1.3] AS "FALSE";
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SELECT ARRAY[1,2] || 3 AS "{1,2,3}";
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SELECT 0 || ARRAY[1,2] AS "{0,1,2}";
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SELECT ARRAY[1,2] || ARRAY[3,4] AS "{{1,2},{3,4}}";
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SELECT ARRAY[[['hello','world']]] || ARRAY[[['happy','birthday']]] AS "ARRAY";
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SELECT ARRAY[[1,2],[3,4]] || ARRAY[5,6] AS "{{1,2},{3,4},{5,6}}";
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SELECT ARRAY[0,0] || ARRAY[1,1] || ARRAY[2,2] AS "{{0,0},{1,1},{2,2}}";
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SELECT 0 || ARRAY[1,2] || 3 AS "{0,1,2,3}";
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-- array casts
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SELECT ARRAY[1,2,3]::text[]::int[]::float8[] AS "{1,2,3}";
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SELECT ARRAY[1,2,3]::text[]::int[]::float8[] is of (float8[]) as "TRUE";
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SELECT ARRAY[['a','bc'],['def','hijk']]::text[]::varchar[] AS "{{a,bc},{def,hijk}}";
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SELECT ARRAY[['a','bc'],['def','hijk']]::text[]::varchar[] is of (varchar[]) as "TRUE";
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SELECT CAST(ARRAY[[[[[['a','bb','ccc']]]]]] as text[]) as "{{{{{{a,bb,ccc}}}}}}";
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2003-06-27 02:33:26 +02:00
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-- test indexes on arrays
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create temp table arr_tbl (f1 int[] unique);
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insert into arr_tbl values ('{1,2,3}');
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insert into arr_tbl values ('{1,2}');
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-- failure expected:
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insert into arr_tbl values ('{1,2,3}');
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insert into arr_tbl values ('{2,3,4}');
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insert into arr_tbl values ('{1,5,3}');
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insert into arr_tbl values ('{1,2,10}');
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set enable_seqscan to off;
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select * from arr_tbl where f1 > '{1,2,3}' and f1 <= '{1,5,3}';
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-- note: if above select doesn't produce the expected tuple order,
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-- then you didn't get an indexscan plan, and something is busted.
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