1868 lines
48 KiB
Plaintext
1868 lines
48 KiB
Plaintext
/*
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* This test is for ICU collations.
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*/
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SET client_encoding TO UTF8;
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CREATE SCHEMA collate_tests;
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SET search_path = collate_tests;
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CREATE TABLE collate_test1 (
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a int,
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b text COLLATE "en-x-icu" NOT NULL
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);
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\d collate_test1
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Table "collate_tests.collate_test1"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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b | text | en-x-icu | not null |
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CREATE TABLE collate_test_fail (
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a int,
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b text COLLATE "ja_JP.eucjp-x-icu"
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);
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ERROR: collation "ja_JP.eucjp-x-icu" for encoding "UTF8" does not exist
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LINE 3: b text COLLATE "ja_JP.eucjp-x-icu"
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^
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CREATE TABLE collate_test_fail (
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a int,
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b text COLLATE "foo-x-icu"
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);
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ERROR: collation "foo-x-icu" for encoding "UTF8" does not exist
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LINE 3: b text COLLATE "foo-x-icu"
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^
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CREATE TABLE collate_test_fail (
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a int COLLATE "en-x-icu",
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b text
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);
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ERROR: collations are not supported by type integer
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LINE 2: a int COLLATE "en-x-icu",
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^
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CREATE TABLE collate_test_like (
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LIKE collate_test1
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);
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\d collate_test_like
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Table "collate_tests.collate_test_like"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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b | text | en-x-icu | not null |
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CREATE TABLE collate_test2 (
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a int,
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b text COLLATE "sv-x-icu"
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);
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CREATE TABLE collate_test3 (
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a int,
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b text COLLATE "C"
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);
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INSERT INTO collate_test1 VALUES (1, 'abc'), (2, 'äbc'), (3, 'bbc'), (4, 'ABC');
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INSERT INTO collate_test2 SELECT * FROM collate_test1;
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INSERT INTO collate_test3 SELECT * FROM collate_test1;
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SELECT * FROM collate_test1 WHERE b >= 'bbc';
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a | b
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---+-----
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3 | bbc
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(1 row)
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SELECT * FROM collate_test2 WHERE b >= 'bbc';
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a | b
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---+-----
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2 | äbc
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3 | bbc
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(2 rows)
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SELECT * FROM collate_test3 WHERE b >= 'bbc';
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a | b
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---+-----
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2 | äbc
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3 | bbc
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(2 rows)
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SELECT * FROM collate_test3 WHERE b >= 'BBC';
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a | b
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---+-----
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1 | abc
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2 | äbc
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3 | bbc
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(3 rows)
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SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc';
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a | b
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---+-----
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2 | äbc
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3 | bbc
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(2 rows)
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SELECT * FROM collate_test1 WHERE b >= 'bbc' COLLATE "C";
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a | b
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---+-----
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2 | äbc
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3 | bbc
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(2 rows)
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SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "C";
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a | b
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---+-----
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2 | äbc
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3 | bbc
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(2 rows)
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SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "en-x-icu";
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ERROR: collation mismatch between explicit collations "C" and "en-x-icu"
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LINE 1: ...* FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "e...
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^
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CREATE DOMAIN testdomain_sv AS text COLLATE "sv-x-icu";
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CREATE DOMAIN testdomain_i AS int COLLATE "sv-x-icu"; -- fails
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ERROR: collations are not supported by type integer
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CREATE TABLE collate_test4 (
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a int,
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b testdomain_sv
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);
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INSERT INTO collate_test4 SELECT * FROM collate_test1;
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SELECT a, b FROM collate_test4 ORDER BY b;
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a | b
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---+-----
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1 | abc
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4 | ABC
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3 | bbc
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2 | äbc
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(4 rows)
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CREATE TABLE collate_test5 (
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a int,
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b testdomain_sv COLLATE "en-x-icu"
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);
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INSERT INTO collate_test5 SELECT * FROM collate_test1;
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SELECT a, b FROM collate_test5 ORDER BY b;
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a | b
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---+-----
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1 | abc
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4 | ABC
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2 | äbc
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3 | bbc
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(4 rows)
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SELECT a, b FROM collate_test1 ORDER BY b;
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a | b
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---+-----
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1 | abc
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4 | ABC
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2 | äbc
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3 | bbc
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(4 rows)
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SELECT a, b FROM collate_test2 ORDER BY b;
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a | b
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---+-----
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1 | abc
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4 | ABC
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3 | bbc
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2 | äbc
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(4 rows)
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SELECT a, b FROM collate_test3 ORDER BY b;
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a | b
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---+-----
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4 | ABC
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1 | abc
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3 | bbc
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2 | äbc
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(4 rows)
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SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C";
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a | b
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---+-----
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4 | ABC
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1 | abc
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3 | bbc
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2 | äbc
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(4 rows)
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-- star expansion
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SELECT * FROM collate_test1 ORDER BY b;
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a | b
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---+-----
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1 | abc
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4 | ABC
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2 | äbc
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3 | bbc
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(4 rows)
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SELECT * FROM collate_test2 ORDER BY b;
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a | b
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---+-----
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1 | abc
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4 | ABC
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3 | bbc
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2 | äbc
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(4 rows)
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SELECT * FROM collate_test3 ORDER BY b;
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a | b
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---+-----
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4 | ABC
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1 | abc
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3 | bbc
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2 | äbc
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(4 rows)
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-- constant expression folding
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SELECT 'bbc' COLLATE "en-x-icu" > 'äbc' COLLATE "en-x-icu" AS "true";
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true
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------
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t
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(1 row)
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SELECT 'bbc' COLLATE "sv-x-icu" > 'äbc' COLLATE "sv-x-icu" AS "false";
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false
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-------
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f
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(1 row)
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-- upper/lower
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CREATE TABLE collate_test10 (
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a int,
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x text COLLATE "en-x-icu",
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y text COLLATE "tr-x-icu"
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);
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INSERT INTO collate_test10 VALUES (1, 'hij', 'hij'), (2, 'HIJ', 'HIJ');
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SELECT a, lower(x), lower(y), upper(x), upper(y), initcap(x), initcap(y) FROM collate_test10;
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a | lower | lower | upper | upper | initcap | initcap
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---+-------+-------+-------+-------+---------+---------
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1 | hij | hij | HIJ | HİJ | Hij | Hij
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2 | hij | hıj | HIJ | HIJ | Hij | Hıj
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(2 rows)
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SELECT a, lower(x COLLATE "C"), lower(y COLLATE "C") FROM collate_test10;
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a | lower | lower
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---+-------+-------
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1 | hij | hij
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2 | hij | hij
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(2 rows)
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SELECT a, x, y FROM collate_test10 ORDER BY lower(y), a;
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a | x | y
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---+-----+-----
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2 | HIJ | HIJ
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1 | hij | hij
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(2 rows)
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-- LIKE/ILIKE
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SELECT * FROM collate_test1 WHERE b LIKE 'abc';
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a | b
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---+-----
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1 | abc
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(1 row)
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SELECT * FROM collate_test1 WHERE b LIKE 'abc%';
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a | b
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---+-----
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1 | abc
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(1 row)
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SELECT * FROM collate_test1 WHERE b LIKE '%bc%';
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a | b
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---+-----
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1 | abc
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2 | äbc
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3 | bbc
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(3 rows)
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SELECT * FROM collate_test1 WHERE b ILIKE 'abc';
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a | b
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---+-----
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1 | abc
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4 | ABC
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(2 rows)
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SELECT * FROM collate_test1 WHERE b ILIKE 'abc%';
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a | b
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---+-----
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1 | abc
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4 | ABC
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(2 rows)
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SELECT * FROM collate_test1 WHERE b ILIKE '%bc%';
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a | b
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---+-----
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1 | abc
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2 | äbc
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3 | bbc
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4 | ABC
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(4 rows)
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SELECT 'Türkiye' COLLATE "en-x-icu" ILIKE '%KI%' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'Türkiye' COLLATE "tr-x-icu" ILIKE '%KI%' AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'bıt' ILIKE 'BIT' COLLATE "en-x-icu" AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'bıt' ILIKE 'BIT' COLLATE "tr-x-icu" AS "true";
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true
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------
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t
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(1 row)
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-- The following actually exercises the selectivity estimation for ILIKE.
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SELECT relname FROM pg_class WHERE relname ILIKE 'abc%';
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relname
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---------
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(0 rows)
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-- regular expressions
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SELECT * FROM collate_test1 WHERE b ~ '^abc$';
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a | b
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---+-----
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1 | abc
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(1 row)
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SELECT * FROM collate_test1 WHERE b ~ '^abc';
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a | b
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---+-----
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1 | abc
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(1 row)
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SELECT * FROM collate_test1 WHERE b ~ 'bc';
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a | b
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---+-----
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1 | abc
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2 | äbc
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3 | bbc
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(3 rows)
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SELECT * FROM collate_test1 WHERE b ~* '^abc$';
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a | b
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---+-----
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1 | abc
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4 | ABC
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(2 rows)
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SELECT * FROM collate_test1 WHERE b ~* '^abc';
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a | b
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---+-----
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1 | abc
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4 | ABC
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(2 rows)
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SELECT * FROM collate_test1 WHERE b ~* 'bc';
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a | b
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---+-----
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1 | abc
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2 | äbc
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3 | bbc
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4 | ABC
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(4 rows)
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CREATE TABLE collate_test6 (
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a int,
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b text COLLATE "en-x-icu"
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);
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INSERT INTO collate_test6 VALUES (1, 'abc'), (2, 'ABC'), (3, '123'), (4, 'ab1'),
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(5, 'a1!'), (6, 'a c'), (7, '!.;'), (8, ' '),
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(9, 'äbç'), (10, 'ÄBÇ');
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SELECT b,
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b ~ '^[[:alpha:]]+$' AS is_alpha,
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b ~ '^[[:upper:]]+$' AS is_upper,
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b ~ '^[[:lower:]]+$' AS is_lower,
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b ~ '^[[:digit:]]+$' AS is_digit,
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b ~ '^[[:alnum:]]+$' AS is_alnum,
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b ~ '^[[:graph:]]+$' AS is_graph,
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b ~ '^[[:print:]]+$' AS is_print,
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b ~ '^[[:punct:]]+$' AS is_punct,
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b ~ '^[[:space:]]+$' AS is_space
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FROM collate_test6;
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b | is_alpha | is_upper | is_lower | is_digit | is_alnum | is_graph | is_print | is_punct | is_space
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-----+----------+----------+----------+----------+----------+----------+----------+----------+----------
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abc | t | f | t | f | t | t | t | f | f
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ABC | t | t | f | f | t | t | t | f | f
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123 | f | f | f | t | t | t | t | f | f
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ab1 | f | f | f | f | t | t | t | f | f
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a1! | f | f | f | f | f | t | t | f | f
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a c | f | f | f | f | f | f | t | f | f
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!.; | f | f | f | f | f | t | t | t | f
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| f | f | f | f | f | f | t | f | t
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äbç | t | f | t | f | t | t | t | f | f
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ÄBÇ | t | t | f | f | t | t | t | f | f
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(10 rows)
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SELECT 'Türkiye' COLLATE "en-x-icu" ~* 'KI' AS "true";
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true
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------
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t
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(1 row)
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SELECT 'Türkiye' COLLATE "tr-x-icu" ~* 'KI' AS "true"; -- true with ICU
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true
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------
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t
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(1 row)
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SELECT 'bıt' ~* 'BIT' COLLATE "en-x-icu" AS "false";
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false
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-------
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f
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(1 row)
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SELECT 'bıt' ~* 'BIT' COLLATE "tr-x-icu" AS "false"; -- false with ICU
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false
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-------
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f
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(1 row)
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-- The following actually exercises the selectivity estimation for ~*.
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SELECT relname FROM pg_class WHERE relname ~* '^abc';
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relname
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---------
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(0 rows)
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/* not run by default because it requires tr_TR system locale
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-- to_char
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SET lc_time TO 'tr_TR';
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SELECT to_char(date '2010-04-01', 'DD TMMON YYYY');
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SELECT to_char(date '2010-04-01', 'DD TMMON YYYY' COLLATE "tr-x-icu");
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*/
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-- backwards parsing
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CREATE VIEW collview1 AS SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc';
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CREATE VIEW collview2 AS SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C";
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CREATE VIEW collview3 AS SELECT a, lower((x || x) COLLATE "C") FROM collate_test10;
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SELECT table_name, view_definition FROM information_schema.views
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WHERE table_name LIKE 'collview%' ORDER BY 1;
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table_name | view_definition
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------------+--------------------------------------------------------------------------
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collview1 | SELECT collate_test1.a, +
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| collate_test1.b +
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| FROM collate_test1 +
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| WHERE ((collate_test1.b COLLATE "C") >= 'bbc'::text);
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collview2 | SELECT collate_test1.a, +
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| collate_test1.b +
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| FROM collate_test1 +
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| ORDER BY (collate_test1.b COLLATE "C");
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collview3 | SELECT collate_test10.a, +
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| lower(((collate_test10.x || collate_test10.x) COLLATE "C")) AS lower+
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| FROM collate_test10;
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(3 rows)
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-- collation propagation in various expression types
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SELECT a, coalesce(b, 'foo') FROM collate_test1 ORDER BY 2;
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a | coalesce
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---+----------
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1 | abc
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4 | ABC
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2 | äbc
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3 | bbc
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(4 rows)
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SELECT a, coalesce(b, 'foo') FROM collate_test2 ORDER BY 2;
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a | coalesce
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---+----------
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1 | abc
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4 | ABC
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3 | bbc
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2 | äbc
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(4 rows)
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SELECT a, coalesce(b, 'foo') FROM collate_test3 ORDER BY 2;
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a | coalesce
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---+----------
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4 | ABC
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1 | abc
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3 | bbc
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2 | äbc
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(4 rows)
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SELECT a, lower(coalesce(x, 'foo')), lower(coalesce(y, 'foo')) FROM collate_test10;
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a | lower | lower
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---+-------+-------
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1 | hij | hij
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2 | hij | hıj
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(2 rows)
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SELECT a, b, greatest(b, 'CCC') FROM collate_test1 ORDER BY 3;
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a | b | greatest
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---+-----+----------
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1 | abc | CCC
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2 | äbc | CCC
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3 | bbc | CCC
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4 | ABC | CCC
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(4 rows)
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SELECT a, b, greatest(b, 'CCC') FROM collate_test2 ORDER BY 3;
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a | b | greatest
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---+-----+----------
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1 | abc | CCC
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3 | bbc | CCC
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4 | ABC | CCC
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2 | äbc | äbc
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(4 rows)
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SELECT a, b, greatest(b, 'CCC') FROM collate_test3 ORDER BY 3;
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a | b | greatest
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---+-----+----------
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4 | ABC | CCC
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1 | abc | abc
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3 | bbc | bbc
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2 | äbc | äbc
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(4 rows)
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SELECT a, x, y, lower(greatest(x, 'foo')), lower(greatest(y, 'foo')) FROM collate_test10;
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a | x | y | lower | lower
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---+-----+-----+-------+-------
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1 | hij | hij | hij | hij
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2 | HIJ | HIJ | hij | hıj
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(2 rows)
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SELECT a, nullif(b, 'abc') FROM collate_test1 ORDER BY 2;
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a | nullif
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---+--------
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4 | ABC
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2 | äbc
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3 | bbc
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1 |
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(4 rows)
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SELECT a, nullif(b, 'abc') FROM collate_test2 ORDER BY 2;
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a | nullif
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---+--------
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4 | ABC
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3 | bbc
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2 | äbc
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1 |
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(4 rows)
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SELECT a, nullif(b, 'abc') FROM collate_test3 ORDER BY 2;
|
||
a | nullif
|
||
---+--------
|
||
4 | ABC
|
||
3 | bbc
|
||
2 | äbc
|
||
1 |
|
||
(4 rows)
|
||
|
||
SELECT a, lower(nullif(x, 'foo')), lower(nullif(y, 'foo')) FROM collate_test10;
|
||
a | lower | lower
|
||
---+-------+-------
|
||
1 | hij | hij
|
||
2 | hij | hıj
|
||
(2 rows)
|
||
|
||
SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test1 ORDER BY 2;
|
||
a | b
|
||
---+------
|
||
4 | ABC
|
||
2 | äbc
|
||
1 | abcd
|
||
3 | bbc
|
||
(4 rows)
|
||
|
||
SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test2 ORDER BY 2;
|
||
a | b
|
||
---+------
|
||
4 | ABC
|
||
1 | abcd
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test3 ORDER BY 2;
|
||
a | b
|
||
---+------
|
||
4 | ABC
|
||
1 | abcd
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
CREATE DOMAIN testdomain AS text;
|
||
SELECT a, b::testdomain FROM collate_test1 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
4 | ABC
|
||
2 | äbc
|
||
3 | bbc
|
||
(4 rows)
|
||
|
||
SELECT a, b::testdomain FROM collate_test2 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
4 | ABC
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
SELECT a, b::testdomain FROM collate_test3 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
4 | ABC
|
||
1 | abc
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
SELECT a, b::testdomain_sv FROM collate_test3 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
4 | ABC
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
SELECT a, lower(x::testdomain), lower(y::testdomain) FROM collate_test10;
|
||
a | lower | lower
|
||
---+-------+-------
|
||
1 | hij | hij
|
||
2 | hij | hıj
|
||
(2 rows)
|
||
|
||
SELECT min(b), max(b) FROM collate_test1;
|
||
min | max
|
||
-----+-----
|
||
abc | bbc
|
||
(1 row)
|
||
|
||
SELECT min(b), max(b) FROM collate_test2;
|
||
min | max
|
||
-----+-----
|
||
abc | äbc
|
||
(1 row)
|
||
|
||
SELECT min(b), max(b) FROM collate_test3;
|
||
min | max
|
||
-----+-----
|
||
ABC | äbc
|
||
(1 row)
|
||
|
||
SELECT array_agg(b ORDER BY b) FROM collate_test1;
|
||
array_agg
|
||
-------------------
|
||
{abc,ABC,äbc,bbc}
|
||
(1 row)
|
||
|
||
SELECT array_agg(b ORDER BY b) FROM collate_test2;
|
||
array_agg
|
||
-------------------
|
||
{abc,ABC,bbc,äbc}
|
||
(1 row)
|
||
|
||
SELECT array_agg(b ORDER BY b) FROM collate_test3;
|
||
array_agg
|
||
-------------------
|
||
{ABC,abc,bbc,äbc}
|
||
(1 row)
|
||
|
||
SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test1 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
1 | abc
|
||
4 | ABC
|
||
4 | ABC
|
||
2 | äbc
|
||
2 | äbc
|
||
3 | bbc
|
||
3 | bbc
|
||
(8 rows)
|
||
|
||
SELECT a, b FROM collate_test2 UNION SELECT a, b FROM collate_test2 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
4 | ABC
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
SELECT a, b FROM collate_test3 WHERE a < 4 INTERSECT SELECT a, b FROM collate_test3 WHERE a > 1 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
3 | bbc
|
||
2 | äbc
|
||
(2 rows)
|
||
|
||
SELECT a, b FROM collate_test3 EXCEPT SELECT a, b FROM collate_test3 WHERE a < 2 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
4 | ABC
|
||
3 | bbc
|
||
2 | äbc
|
||
(3 rows)
|
||
|
||
SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3 ORDER BY 2; -- fail
|
||
ERROR: could not determine which collation to use for string comparison
|
||
HINT: Use the COLLATE clause to set the collation explicitly.
|
||
SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3; -- ok
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
2 | äbc
|
||
3 | bbc
|
||
4 | ABC
|
||
1 | abc
|
||
2 | äbc
|
||
3 | bbc
|
||
4 | ABC
|
||
(8 rows)
|
||
|
||
SELECT a, b FROM collate_test1 UNION SELECT a, b FROM collate_test3 ORDER BY 2; -- fail
|
||
ERROR: collation mismatch between implicit collations "en-x-icu" and "C"
|
||
LINE 1: SELECT a, b FROM collate_test1 UNION SELECT a, b FROM collat...
|
||
^
|
||
HINT: You can choose the collation by applying the COLLATE clause to one or both expressions.
|
||
SELECT a, b COLLATE "C" FROM collate_test1 UNION SELECT a, b FROM collate_test3 ORDER BY 2; -- ok
|
||
a | b
|
||
---+-----
|
||
4 | ABC
|
||
1 | abc
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
SELECT a, b FROM collate_test1 INTERSECT SELECT a, b FROM collate_test3 ORDER BY 2; -- fail
|
||
ERROR: collation mismatch between implicit collations "en-x-icu" and "C"
|
||
LINE 1: ...ELECT a, b FROM collate_test1 INTERSECT SELECT a, b FROM col...
|
||
^
|
||
HINT: You can choose the collation by applying the COLLATE clause to one or both expressions.
|
||
SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM collate_test3 ORDER BY 2; -- fail
|
||
ERROR: collation mismatch between implicit collations "en-x-icu" and "C"
|
||
LINE 1: SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM colla...
|
||
^
|
||
HINT: You can choose the collation by applying the COLLATE clause to one or both expressions.
|
||
CREATE TABLE test_u AS SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3; -- fail
|
||
ERROR: no collation was derived for column "b" with collatable type text
|
||
HINT: Use the COLLATE clause to set the collation explicitly.
|
||
-- ideally this would be a parse-time error, but for now it must be run-time:
|
||
select x < y from collate_test10; -- fail
|
||
ERROR: could not determine which collation to use for string comparison
|
||
HINT: Use the COLLATE clause to set the collation explicitly.
|
||
select x || y from collate_test10; -- ok, because || is not collation aware
|
||
?column?
|
||
----------
|
||
hijhij
|
||
HIJHIJ
|
||
(2 rows)
|
||
|
||
select x, y from collate_test10 order by x || y; -- not so ok
|
||
ERROR: collation mismatch between implicit collations "en-x-icu" and "tr-x-icu"
|
||
LINE 1: select x, y from collate_test10 order by x || y;
|
||
^
|
||
HINT: You can choose the collation by applying the COLLATE clause to one or both expressions.
|
||
-- collation mismatch between recursive and non-recursive term
|
||
WITH RECURSIVE foo(x) AS
|
||
(SELECT x FROM (VALUES('a' COLLATE "en-x-icu"),('b')) t(x)
|
||
UNION ALL
|
||
SELECT (x || 'c') COLLATE "de-x-icu" FROM foo WHERE length(x) < 10)
|
||
SELECT * FROM foo;
|
||
ERROR: recursive query "foo" column 1 has collation "en-x-icu" in non-recursive term but collation "de-x-icu" overall
|
||
LINE 2: (SELECT x FROM (VALUES('a' COLLATE "en-x-icu"),('b')) t(x...
|
||
^
|
||
HINT: Use the COLLATE clause to set the collation of the non-recursive term.
|
||
-- casting
|
||
SELECT CAST('42' AS text COLLATE "C");
|
||
ERROR: syntax error at or near "COLLATE"
|
||
LINE 1: SELECT CAST('42' AS text COLLATE "C");
|
||
^
|
||
SELECT a, CAST(b AS varchar) FROM collate_test1 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
4 | ABC
|
||
2 | äbc
|
||
3 | bbc
|
||
(4 rows)
|
||
|
||
SELECT a, CAST(b AS varchar) FROM collate_test2 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
4 | ABC
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
SELECT a, CAST(b AS varchar) FROM collate_test3 ORDER BY 2;
|
||
a | b
|
||
---+-----
|
||
4 | ABC
|
||
1 | abc
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
-- propagation of collation in SQL functions (inlined and non-inlined cases)
|
||
-- and plpgsql functions too
|
||
CREATE FUNCTION mylt (text, text) RETURNS boolean LANGUAGE sql
|
||
AS $$ select $1 < $2 $$;
|
||
CREATE FUNCTION mylt_noninline (text, text) RETURNS boolean LANGUAGE sql
|
||
AS $$ select $1 < $2 limit 1 $$;
|
||
CREATE FUNCTION mylt_plpgsql (text, text) RETURNS boolean LANGUAGE plpgsql
|
||
AS $$ begin return $1 < $2; end $$;
|
||
SELECT a.b AS a, b.b AS b, a.b < b.b AS lt,
|
||
mylt(a.b, b.b), mylt_noninline(a.b, b.b), mylt_plpgsql(a.b, b.b)
|
||
FROM collate_test1 a, collate_test1 b
|
||
ORDER BY a.b, b.b;
|
||
a | b | lt | mylt | mylt_noninline | mylt_plpgsql
|
||
-----+-----+----+------+----------------+--------------
|
||
abc | abc | f | f | f | f
|
||
abc | ABC | t | t | t | t
|
||
abc | äbc | t | t | t | t
|
||
abc | bbc | t | t | t | t
|
||
ABC | abc | f | f | f | f
|
||
ABC | ABC | f | f | f | f
|
||
ABC | äbc | t | t | t | t
|
||
ABC | bbc | t | t | t | t
|
||
äbc | abc | f | f | f | f
|
||
äbc | ABC | f | f | f | f
|
||
äbc | äbc | f | f | f | f
|
||
äbc | bbc | t | t | t | t
|
||
bbc | abc | f | f | f | f
|
||
bbc | ABC | f | f | f | f
|
||
bbc | äbc | f | f | f | f
|
||
bbc | bbc | f | f | f | f
|
||
(16 rows)
|
||
|
||
SELECT a.b AS a, b.b AS b, a.b < b.b COLLATE "C" AS lt,
|
||
mylt(a.b, b.b COLLATE "C"), mylt_noninline(a.b, b.b COLLATE "C"),
|
||
mylt_plpgsql(a.b, b.b COLLATE "C")
|
||
FROM collate_test1 a, collate_test1 b
|
||
ORDER BY a.b, b.b;
|
||
a | b | lt | mylt | mylt_noninline | mylt_plpgsql
|
||
-----+-----+----+------+----------------+--------------
|
||
abc | abc | f | f | f | f
|
||
abc | ABC | f | f | f | f
|
||
abc | äbc | t | t | t | t
|
||
abc | bbc | t | t | t | t
|
||
ABC | abc | t | t | t | t
|
||
ABC | ABC | f | f | f | f
|
||
ABC | äbc | t | t | t | t
|
||
ABC | bbc | t | t | t | t
|
||
äbc | abc | f | f | f | f
|
||
äbc | ABC | f | f | f | f
|
||
äbc | äbc | f | f | f | f
|
||
äbc | bbc | f | f | f | f
|
||
bbc | abc | f | f | f | f
|
||
bbc | ABC | f | f | f | f
|
||
bbc | äbc | t | t | t | t
|
||
bbc | bbc | f | f | f | f
|
||
(16 rows)
|
||
|
||
-- collation override in plpgsql
|
||
CREATE FUNCTION mylt2 (x text, y text) RETURNS boolean LANGUAGE plpgsql AS $$
|
||
declare
|
||
xx text := x;
|
||
yy text := y;
|
||
begin
|
||
return xx < yy;
|
||
end
|
||
$$;
|
||
SELECT mylt2('a', 'B' collate "en-x-icu") as t, mylt2('a', 'B' collate "C") as f;
|
||
t | f
|
||
---+---
|
||
t | f
|
||
(1 row)
|
||
|
||
CREATE OR REPLACE FUNCTION
|
||
mylt2 (x text, y text) RETURNS boolean LANGUAGE plpgsql AS $$
|
||
declare
|
||
xx text COLLATE "POSIX" := x;
|
||
yy text := y;
|
||
begin
|
||
return xx < yy;
|
||
end
|
||
$$;
|
||
SELECT mylt2('a', 'B') as f;
|
||
f
|
||
---
|
||
f
|
||
(1 row)
|
||
|
||
SELECT mylt2('a', 'B' collate "C") as fail; -- conflicting collations
|
||
ERROR: could not determine which collation to use for string comparison
|
||
HINT: Use the COLLATE clause to set the collation explicitly.
|
||
CONTEXT: PL/pgSQL function mylt2(text,text) line 6 at RETURN
|
||
SELECT mylt2('a', 'B' collate "POSIX") as f;
|
||
f
|
||
---
|
||
f
|
||
(1 row)
|
||
|
||
-- polymorphism
|
||
SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test1)) ORDER BY 1;
|
||
unnest
|
||
--------
|
||
abc
|
||
ABC
|
||
äbc
|
||
bbc
|
||
(4 rows)
|
||
|
||
SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test2)) ORDER BY 1;
|
||
unnest
|
||
--------
|
||
abc
|
||
ABC
|
||
bbc
|
||
äbc
|
||
(4 rows)
|
||
|
||
SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test3)) ORDER BY 1;
|
||
unnest
|
||
--------
|
||
ABC
|
||
abc
|
||
bbc
|
||
äbc
|
||
(4 rows)
|
||
|
||
CREATE FUNCTION dup (anyelement) RETURNS anyelement
|
||
AS 'select $1' LANGUAGE sql;
|
||
SELECT a, dup(b) FROM collate_test1 ORDER BY 2;
|
||
a | dup
|
||
---+-----
|
||
1 | abc
|
||
4 | ABC
|
||
2 | äbc
|
||
3 | bbc
|
||
(4 rows)
|
||
|
||
SELECT a, dup(b) FROM collate_test2 ORDER BY 2;
|
||
a | dup
|
||
---+-----
|
||
1 | abc
|
||
4 | ABC
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
SELECT a, dup(b) FROM collate_test3 ORDER BY 2;
|
||
a | dup
|
||
---+-----
|
||
4 | ABC
|
||
1 | abc
|
||
3 | bbc
|
||
2 | äbc
|
||
(4 rows)
|
||
|
||
-- indexes
|
||
CREATE INDEX collate_test1_idx1 ON collate_test1 (b);
|
||
CREATE INDEX collate_test1_idx2 ON collate_test1 (b COLLATE "C");
|
||
CREATE INDEX collate_test1_idx3 ON collate_test1 ((b COLLATE "C")); -- this is different grammatically
|
||
CREATE INDEX collate_test1_idx4 ON collate_test1 (((b||'foo') COLLATE "POSIX"));
|
||
CREATE INDEX collate_test1_idx5 ON collate_test1 (a COLLATE "C"); -- fail
|
||
ERROR: collations are not supported by type integer
|
||
CREATE INDEX collate_test1_idx6 ON collate_test1 ((a COLLATE "C")); -- fail
|
||
ERROR: collations are not supported by type integer
|
||
LINE 1: ...ATE INDEX collate_test1_idx6 ON collate_test1 ((a COLLATE "C...
|
||
^
|
||
SELECT relname, pg_get_indexdef(oid) FROM pg_class WHERE relname LIKE 'collate_test%_idx%' ORDER BY 1;
|
||
relname | pg_get_indexdef
|
||
--------------------+-------------------------------------------------------------------------------------------------------------------
|
||
collate_test1_idx1 | CREATE INDEX collate_test1_idx1 ON collate_tests.collate_test1 USING btree (b)
|
||
collate_test1_idx2 | CREATE INDEX collate_test1_idx2 ON collate_tests.collate_test1 USING btree (b COLLATE "C")
|
||
collate_test1_idx3 | CREATE INDEX collate_test1_idx3 ON collate_tests.collate_test1 USING btree (b COLLATE "C")
|
||
collate_test1_idx4 | CREATE INDEX collate_test1_idx4 ON collate_tests.collate_test1 USING btree (((b || 'foo'::text)) COLLATE "POSIX")
|
||
(4 rows)
|
||
|
||
-- schema manipulation commands
|
||
CREATE ROLE regress_test_role;
|
||
CREATE SCHEMA test_schema;
|
||
-- We need to do this this way to cope with varying names for encodings:
|
||
do $$
|
||
BEGIN
|
||
EXECUTE 'CREATE COLLATION test0 (provider = icu, locale = ' ||
|
||
quote_literal(current_setting('lc_collate')) || ');';
|
||
END
|
||
$$;
|
||
CREATE COLLATION test0 FROM "C"; -- fail, duplicate name
|
||
ERROR: collation "test0" already exists
|
||
do $$
|
||
BEGIN
|
||
EXECUTE 'CREATE COLLATION test1 (provider = icu, lc_collate = ' ||
|
||
quote_literal(current_setting('lc_collate')) ||
|
||
', lc_ctype = ' ||
|
||
quote_literal(current_setting('lc_ctype')) || ');';
|
||
END
|
||
$$;
|
||
CREATE COLLATION test3 (provider = icu, lc_collate = 'en_US.utf8'); -- fail, need lc_ctype
|
||
ERROR: parameter "lc_ctype" must be specified
|
||
CREATE COLLATION testx (provider = icu, locale = 'nonsense'); /* never fails with ICU */ DROP COLLATION testx;
|
||
CREATE COLLATION test4 FROM nonsense;
|
||
ERROR: collation "nonsense" for encoding "UTF8" does not exist
|
||
CREATE COLLATION test5 FROM test0;
|
||
SELECT collname FROM pg_collation WHERE collname LIKE 'test%' ORDER BY 1;
|
||
collname
|
||
----------
|
||
test0
|
||
test1
|
||
test5
|
||
(3 rows)
|
||
|
||
ALTER COLLATION test1 RENAME TO test11;
|
||
ALTER COLLATION test0 RENAME TO test11; -- fail
|
||
ERROR: collation "test11" already exists in schema "collate_tests"
|
||
ALTER COLLATION test1 RENAME TO test22; -- fail
|
||
ERROR: collation "test1" for encoding "UTF8" does not exist
|
||
ALTER COLLATION test11 OWNER TO regress_test_role;
|
||
ALTER COLLATION test11 OWNER TO nonsense;
|
||
ERROR: role "nonsense" does not exist
|
||
ALTER COLLATION test11 SET SCHEMA test_schema;
|
||
COMMENT ON COLLATION test0 IS 'US English';
|
||
SELECT collname, nspname, obj_description(pg_collation.oid, 'pg_collation')
|
||
FROM pg_collation JOIN pg_namespace ON (collnamespace = pg_namespace.oid)
|
||
WHERE collname LIKE 'test%'
|
||
ORDER BY 1;
|
||
collname | nspname | obj_description
|
||
----------+---------------+-----------------
|
||
test0 | collate_tests | US English
|
||
test11 | test_schema |
|
||
test5 | collate_tests |
|
||
(3 rows)
|
||
|
||
DROP COLLATION test0, test_schema.test11, test5;
|
||
DROP COLLATION test0; -- fail
|
||
ERROR: collation "test0" for encoding "UTF8" does not exist
|
||
DROP COLLATION IF EXISTS test0;
|
||
NOTICE: collation "test0" does not exist, skipping
|
||
SELECT collname FROM pg_collation WHERE collname LIKE 'test%';
|
||
collname
|
||
----------
|
||
(0 rows)
|
||
|
||
DROP SCHEMA test_schema;
|
||
DROP ROLE regress_test_role;
|
||
-- ALTER
|
||
ALTER COLLATION "en-x-icu" REFRESH VERSION;
|
||
NOTICE: version has not changed
|
||
-- dependencies
|
||
CREATE COLLATION test0 FROM "C";
|
||
CREATE TABLE collate_dep_test1 (a int, b text COLLATE test0);
|
||
CREATE DOMAIN collate_dep_dom1 AS text COLLATE test0;
|
||
CREATE TYPE collate_dep_test2 AS (x int, y text COLLATE test0);
|
||
CREATE VIEW collate_dep_test3 AS SELECT text 'foo' COLLATE test0 AS foo;
|
||
CREATE TABLE collate_dep_test4t (a int, b text);
|
||
CREATE INDEX collate_dep_test4i ON collate_dep_test4t (b COLLATE test0);
|
||
DROP COLLATION test0 RESTRICT; -- fail
|
||
ERROR: cannot drop collation test0 because other objects depend on it
|
||
DETAIL: column b of table collate_dep_test1 depends on collation test0
|
||
type collate_dep_dom1 depends on collation test0
|
||
column y of composite type collate_dep_test2 depends on collation test0
|
||
view collate_dep_test3 depends on collation test0
|
||
index collate_dep_test4i depends on collation test0
|
||
HINT: Use DROP ... CASCADE to drop the dependent objects too.
|
||
DROP COLLATION test0 CASCADE;
|
||
NOTICE: drop cascades to 5 other objects
|
||
DETAIL: drop cascades to column b of table collate_dep_test1
|
||
drop cascades to type collate_dep_dom1
|
||
drop cascades to column y of composite type collate_dep_test2
|
||
drop cascades to view collate_dep_test3
|
||
drop cascades to index collate_dep_test4i
|
||
\d collate_dep_test1
|
||
Table "collate_tests.collate_dep_test1"
|
||
Column | Type | Collation | Nullable | Default
|
||
--------+---------+-----------+----------+---------
|
||
a | integer | | |
|
||
|
||
\d collate_dep_test2
|
||
Composite type "collate_tests.collate_dep_test2"
|
||
Column | Type | Collation | Nullable | Default
|
||
--------+---------+-----------+----------+---------
|
||
x | integer | | |
|
||
|
||
DROP TABLE collate_dep_test1, collate_dep_test4t;
|
||
DROP TYPE collate_dep_test2;
|
||
-- test range types and collations
|
||
create type textrange_c as range(subtype=text, collation="C");
|
||
create type textrange_en_us as range(subtype=text, collation="en-x-icu");
|
||
select textrange_c('A','Z') @> 'b'::text;
|
||
?column?
|
||
----------
|
||
f
|
||
(1 row)
|
||
|
||
select textrange_en_us('A','Z') @> 'b'::text;
|
||
?column?
|
||
----------
|
||
t
|
||
(1 row)
|
||
|
||
drop type textrange_c;
|
||
drop type textrange_en_us;
|
||
-- test ICU collation customization
|
||
-- test the attributes handled by icu_set_collation_attributes()
|
||
CREATE COLLATION testcoll_ignore_accents (provider = icu, locale = '@colStrength=primary;colCaseLevel=yes');
|
||
SELECT 'aaá' > 'AAA' COLLATE "und-x-icu", 'aaá' < 'AAA' COLLATE testcoll_ignore_accents;
|
||
?column? | ?column?
|
||
----------+----------
|
||
t | t
|
||
(1 row)
|
||
|
||
CREATE COLLATION testcoll_backwards (provider = icu, locale = '@colBackwards=yes');
|
||
SELECT 'coté' < 'côte' COLLATE "und-x-icu", 'coté' > 'côte' COLLATE testcoll_backwards;
|
||
?column? | ?column?
|
||
----------+----------
|
||
t | t
|
||
(1 row)
|
||
|
||
CREATE COLLATION testcoll_lower_first (provider = icu, locale = '@colCaseFirst=lower');
|
||
CREATE COLLATION testcoll_upper_first (provider = icu, locale = '@colCaseFirst=upper');
|
||
SELECT 'aaa' < 'AAA' COLLATE testcoll_lower_first, 'aaa' > 'AAA' COLLATE testcoll_upper_first;
|
||
?column? | ?column?
|
||
----------+----------
|
||
t | t
|
||
(1 row)
|
||
|
||
CREATE COLLATION testcoll_shifted (provider = icu, locale = '@colAlternate=shifted');
|
||
SELECT 'de-luge' < 'deanza' COLLATE "und-x-icu", 'de-luge' > 'deanza' COLLATE testcoll_shifted;
|
||
?column? | ?column?
|
||
----------+----------
|
||
t | t
|
||
(1 row)
|
||
|
||
CREATE COLLATION testcoll_numeric (provider = icu, locale = '@colNumeric=yes');
|
||
SELECT 'A-21' > 'A-123' COLLATE "und-x-icu", 'A-21' < 'A-123' COLLATE testcoll_numeric;
|
||
?column? | ?column?
|
||
----------+----------
|
||
t | t
|
||
(1 row)
|
||
|
||
CREATE COLLATION testcoll_error1 (provider = icu, locale = '@colNumeric=lower');
|
||
ERROR: could not open collator for locale "@colNumeric=lower": U_ILLEGAL_ARGUMENT_ERROR
|
||
-- test that attributes not handled by icu_set_collation_attributes()
|
||
-- (handled by ucol_open() directly) also work
|
||
CREATE COLLATION testcoll_de_phonebook (provider = icu, locale = 'de@collation=phonebook');
|
||
SELECT 'Goldmann' < 'Götz' COLLATE "de-x-icu", 'Goldmann' > 'Götz' COLLATE testcoll_de_phonebook;
|
||
?column? | ?column?
|
||
----------+----------
|
||
t | t
|
||
(1 row)
|
||
|
||
-- nondeterministic collations
|
||
CREATE COLLATION ctest_det (provider = icu, locale = 'und', deterministic = true);
|
||
CREATE COLLATION ctest_nondet (provider = icu, locale = 'und', deterministic = false);
|
||
CREATE TABLE test6 (a int, b text);
|
||
-- same string in different normal forms
|
||
INSERT INTO test6 VALUES (1, U&'\00E4bc');
|
||
INSERT INTO test6 VALUES (2, U&'\0061\0308bc');
|
||
SELECT * FROM test6;
|
||
a | b
|
||
---+-----
|
||
1 | äbc
|
||
2 | äbc
|
||
(2 rows)
|
||
|
||
SELECT * FROM test6 WHERE b = 'äbc' COLLATE ctest_det;
|
||
a | b
|
||
---+-----
|
||
1 | äbc
|
||
(1 row)
|
||
|
||
SELECT * FROM test6 WHERE b = 'äbc' COLLATE ctest_nondet;
|
||
a | b
|
||
---+-----
|
||
1 | äbc
|
||
2 | äbc
|
||
(2 rows)
|
||
|
||
CREATE COLLATION case_sensitive (provider = icu, locale = 'und');
|
||
CREATE COLLATION case_insensitive (provider = icu, locale = 'und-u-ks-level2', deterministic = false);
|
||
SELECT 'abc' <= 'ABC' COLLATE case_sensitive, 'abc' >= 'ABC' COLLATE case_sensitive;
|
||
?column? | ?column?
|
||
----------+----------
|
||
t | f
|
||
(1 row)
|
||
|
||
SELECT 'abc' <= 'ABC' COLLATE case_insensitive, 'abc' >= 'ABC' COLLATE case_insensitive;
|
||
?column? | ?column?
|
||
----------+----------
|
||
t | t
|
||
(1 row)
|
||
|
||
CREATE TABLE test1cs (x text COLLATE case_sensitive);
|
||
CREATE TABLE test2cs (x text COLLATE case_sensitive);
|
||
CREATE TABLE test3cs (x text COLLATE case_sensitive);
|
||
INSERT INTO test1cs VALUES ('abc'), ('def'), ('ghi');
|
||
INSERT INTO test2cs VALUES ('ABC'), ('ghi');
|
||
INSERT INTO test3cs VALUES ('abc'), ('ABC'), ('def'), ('ghi');
|
||
SELECT x FROM test3cs WHERE x = 'abc';
|
||
x
|
||
-----
|
||
abc
|
||
(1 row)
|
||
|
||
SELECT x FROM test3cs WHERE x <> 'abc';
|
||
x
|
||
-----
|
||
ABC
|
||
def
|
||
ghi
|
||
(3 rows)
|
||
|
||
SELECT x FROM test3cs WHERE x LIKE 'a%';
|
||
x
|
||
-----
|
||
abc
|
||
(1 row)
|
||
|
||
SELECT x FROM test3cs WHERE x ILIKE 'a%';
|
||
x
|
||
-----
|
||
abc
|
||
ABC
|
||
(2 rows)
|
||
|
||
SELECT x FROM test3cs WHERE x SIMILAR TO 'a%';
|
||
x
|
||
-----
|
||
abc
|
||
(1 row)
|
||
|
||
SELECT x FROM test3cs WHERE x ~ 'a';
|
||
x
|
||
-----
|
||
abc
|
||
(1 row)
|
||
|
||
SELECT x FROM test1cs UNION SELECT x FROM test2cs ORDER BY x;
|
||
x
|
||
-----
|
||
abc
|
||
ABC
|
||
def
|
||
ghi
|
||
(4 rows)
|
||
|
||
SELECT x FROM test2cs UNION SELECT x FROM test1cs ORDER BY x;
|
||
x
|
||
-----
|
||
abc
|
||
ABC
|
||
def
|
||
ghi
|
||
(4 rows)
|
||
|
||
SELECT x FROM test1cs INTERSECT SELECT x FROM test2cs;
|
||
x
|
||
-----
|
||
ghi
|
||
(1 row)
|
||
|
||
SELECT x FROM test2cs INTERSECT SELECT x FROM test1cs;
|
||
x
|
||
-----
|
||
ghi
|
||
(1 row)
|
||
|
||
SELECT x FROM test1cs EXCEPT SELECT x FROM test2cs;
|
||
x
|
||
-----
|
||
abc
|
||
def
|
||
(2 rows)
|
||
|
||
SELECT x FROM test2cs EXCEPT SELECT x FROM test1cs;
|
||
x
|
||
-----
|
||
ABC
|
||
(1 row)
|
||
|
||
SELECT DISTINCT x FROM test3cs ORDER BY x;
|
||
x
|
||
-----
|
||
abc
|
||
ABC
|
||
def
|
||
ghi
|
||
(4 rows)
|
||
|
||
SELECT count(DISTINCT x) FROM test3cs;
|
||
count
|
||
-------
|
||
4
|
||
(1 row)
|
||
|
||
SELECT x, count(*) FROM test3cs GROUP BY x ORDER BY x;
|
||
x | count
|
||
-----+-------
|
||
abc | 1
|
||
ABC | 1
|
||
def | 1
|
||
ghi | 1
|
||
(4 rows)
|
||
|
||
SELECT x, row_number() OVER (ORDER BY x), rank() OVER (ORDER BY x) FROM test3cs ORDER BY x;
|
||
x | row_number | rank
|
||
-----+------------+------
|
||
abc | 1 | 1
|
||
ABC | 2 | 2
|
||
def | 3 | 3
|
||
ghi | 4 | 4
|
||
(4 rows)
|
||
|
||
CREATE UNIQUE INDEX ON test1cs (x); -- ok
|
||
INSERT INTO test1cs VALUES ('ABC'); -- ok
|
||
CREATE UNIQUE INDEX ON test3cs (x); -- ok
|
||
SELECT string_to_array('ABC,DEF,GHI' COLLATE case_sensitive, ',', 'abc');
|
||
string_to_array
|
||
-----------------
|
||
{ABC,DEF,GHI}
|
||
(1 row)
|
||
|
||
SELECT string_to_array('ABCDEFGHI' COLLATE case_sensitive, NULL, 'b');
|
||
string_to_array
|
||
---------------------
|
||
{A,B,C,D,E,F,G,H,I}
|
||
(1 row)
|
||
|
||
CREATE TABLE test1ci (x text COLLATE case_insensitive);
|
||
CREATE TABLE test2ci (x text COLLATE case_insensitive);
|
||
CREATE TABLE test3ci (x text COLLATE case_insensitive);
|
||
CREATE INDEX ON test3ci (x text_pattern_ops); -- error
|
||
ERROR: nondeterministic collations are not supported for operator class "text_pattern_ops"
|
||
INSERT INTO test1ci VALUES ('abc'), ('def'), ('ghi');
|
||
INSERT INTO test2ci VALUES ('ABC'), ('ghi');
|
||
INSERT INTO test3ci VALUES ('abc'), ('ABC'), ('def'), ('ghi');
|
||
SELECT x FROM test3ci WHERE x = 'abc';
|
||
x
|
||
-----
|
||
abc
|
||
ABC
|
||
(2 rows)
|
||
|
||
SELECT x FROM test3ci WHERE x <> 'abc';
|
||
x
|
||
-----
|
||
def
|
||
ghi
|
||
(2 rows)
|
||
|
||
SELECT x FROM test3ci WHERE x LIKE 'a%';
|
||
ERROR: nondeterministic collations are not supported for LIKE
|
||
SELECT x FROM test3ci WHERE x ILIKE 'a%';
|
||
ERROR: nondeterministic collations are not supported for ILIKE
|
||
SELECT x FROM test3ci WHERE x SIMILAR TO 'a%';
|
||
ERROR: nondeterministic collations are not supported for regular expressions
|
||
SELECT x FROM test3ci WHERE x ~ 'a';
|
||
ERROR: nondeterministic collations are not supported for regular expressions
|
||
SELECT x FROM test1ci UNION SELECT x FROM test2ci ORDER BY x;
|
||
x
|
||
-----
|
||
abc
|
||
def
|
||
ghi
|
||
(3 rows)
|
||
|
||
SELECT x FROM test2ci UNION SELECT x FROM test1ci ORDER BY x;
|
||
x
|
||
-----
|
||
ABC
|
||
def
|
||
ghi
|
||
(3 rows)
|
||
|
||
SELECT x FROM test1ci INTERSECT SELECT x FROM test2ci;
|
||
x
|
||
-----
|
||
ghi
|
||
abc
|
||
(2 rows)
|
||
|
||
SELECT x FROM test2ci INTERSECT SELECT x FROM test1ci;
|
||
x
|
||
-----
|
||
ghi
|
||
ABC
|
||
(2 rows)
|
||
|
||
SELECT x FROM test1ci EXCEPT SELECT x FROM test2ci;
|
||
x
|
||
-----
|
||
def
|
||
(1 row)
|
||
|
||
SELECT x FROM test2ci EXCEPT SELECT x FROM test1ci;
|
||
x
|
||
---
|
||
(0 rows)
|
||
|
||
SELECT DISTINCT x FROM test3ci ORDER BY x;
|
||
x
|
||
-----
|
||
abc
|
||
def
|
||
ghi
|
||
(3 rows)
|
||
|
||
SELECT count(DISTINCT x) FROM test3ci;
|
||
count
|
||
-------
|
||
3
|
||
(1 row)
|
||
|
||
SELECT x, count(*) FROM test3ci GROUP BY x ORDER BY x;
|
||
x | count
|
||
-----+-------
|
||
abc | 2
|
||
def | 1
|
||
ghi | 1
|
||
(3 rows)
|
||
|
||
SELECT x, row_number() OVER (ORDER BY x), rank() OVER (ORDER BY x) FROM test3ci ORDER BY x;
|
||
x | row_number | rank
|
||
-----+------------+------
|
||
abc | 1 | 1
|
||
ABC | 2 | 1
|
||
def | 3 | 3
|
||
ghi | 4 | 4
|
||
(4 rows)
|
||
|
||
CREATE UNIQUE INDEX ON test1ci (x); -- ok
|
||
INSERT INTO test1ci VALUES ('ABC'); -- error
|
||
ERROR: duplicate key value violates unique constraint "test1ci_x_idx"
|
||
DETAIL: Key (x)=(ABC) already exists.
|
||
CREATE UNIQUE INDEX ON test3ci (x); -- error
|
||
ERROR: could not create unique index "test3ci_x_idx"
|
||
DETAIL: Key (x)=(abc) is duplicated.
|
||
SELECT string_to_array('ABC,DEF,GHI' COLLATE case_insensitive, ',', 'abc');
|
||
ERROR: nondeterministic collations are not supported for substring searches
|
||
SELECT string_to_array('ABCDEFGHI' COLLATE case_insensitive, NULL, 'b');
|
||
string_to_array
|
||
------------------------
|
||
{A,NULL,C,D,E,F,G,H,I}
|
||
(1 row)
|
||
|
||
-- bpchar
|
||
CREATE TABLE test1bpci (x char(3) COLLATE case_insensitive);
|
||
CREATE TABLE test2bpci (x char(3) COLLATE case_insensitive);
|
||
CREATE TABLE test3bpci (x char(3) COLLATE case_insensitive);
|
||
CREATE INDEX ON test3bpci (x bpchar_pattern_ops); -- error
|
||
ERROR: nondeterministic collations are not supported for operator class "bpchar_pattern_ops"
|
||
INSERT INTO test1bpci VALUES ('abc'), ('def'), ('ghi');
|
||
INSERT INTO test2bpci VALUES ('ABC'), ('ghi');
|
||
INSERT INTO test3bpci VALUES ('abc'), ('ABC'), ('def'), ('ghi');
|
||
SELECT x FROM test3bpci WHERE x = 'abc';
|
||
x
|
||
-----
|
||
abc
|
||
ABC
|
||
(2 rows)
|
||
|
||
SELECT x FROM test3bpci WHERE x <> 'abc';
|
||
x
|
||
-----
|
||
def
|
||
ghi
|
||
(2 rows)
|
||
|
||
SELECT x FROM test3bpci WHERE x LIKE 'a%';
|
||
ERROR: nondeterministic collations are not supported for LIKE
|
||
SELECT x FROM test3bpci WHERE x ILIKE 'a%';
|
||
ERROR: nondeterministic collations are not supported for ILIKE
|
||
SELECT x FROM test3bpci WHERE x SIMILAR TO 'a%';
|
||
ERROR: nondeterministic collations are not supported for regular expressions
|
||
SELECT x FROM test3bpci WHERE x ~ 'a';
|
||
ERROR: nondeterministic collations are not supported for regular expressions
|
||
SELECT x FROM test1bpci UNION SELECT x FROM test2bpci ORDER BY x;
|
||
x
|
||
-----
|
||
abc
|
||
def
|
||
ghi
|
||
(3 rows)
|
||
|
||
SELECT x FROM test2bpci UNION SELECT x FROM test1bpci ORDER BY x;
|
||
x
|
||
-----
|
||
ABC
|
||
def
|
||
ghi
|
||
(3 rows)
|
||
|
||
SELECT x FROM test1bpci INTERSECT SELECT x FROM test2bpci;
|
||
x
|
||
-----
|
||
ghi
|
||
abc
|
||
(2 rows)
|
||
|
||
SELECT x FROM test2bpci INTERSECT SELECT x FROM test1bpci;
|
||
x
|
||
-----
|
||
ghi
|
||
ABC
|
||
(2 rows)
|
||
|
||
SELECT x FROM test1bpci EXCEPT SELECT x FROM test2bpci;
|
||
x
|
||
-----
|
||
def
|
||
(1 row)
|
||
|
||
SELECT x FROM test2bpci EXCEPT SELECT x FROM test1bpci;
|
||
x
|
||
---
|
||
(0 rows)
|
||
|
||
SELECT DISTINCT x FROM test3bpci ORDER BY x;
|
||
x
|
||
-----
|
||
abc
|
||
def
|
||
ghi
|
||
(3 rows)
|
||
|
||
SELECT count(DISTINCT x) FROM test3bpci;
|
||
count
|
||
-------
|
||
3
|
||
(1 row)
|
||
|
||
SELECT x, count(*) FROM test3bpci GROUP BY x ORDER BY x;
|
||
x | count
|
||
-----+-------
|
||
abc | 2
|
||
def | 1
|
||
ghi | 1
|
||
(3 rows)
|
||
|
||
SELECT x, row_number() OVER (ORDER BY x), rank() OVER (ORDER BY x) FROM test3bpci ORDER BY x;
|
||
x | row_number | rank
|
||
-----+------------+------
|
||
abc | 1 | 1
|
||
ABC | 2 | 1
|
||
def | 3 | 3
|
||
ghi | 4 | 4
|
||
(4 rows)
|
||
|
||
CREATE UNIQUE INDEX ON test1bpci (x); -- ok
|
||
INSERT INTO test1bpci VALUES ('ABC'); -- error
|
||
ERROR: duplicate key value violates unique constraint "test1bpci_x_idx"
|
||
DETAIL: Key (x)=(ABC) already exists.
|
||
CREATE UNIQUE INDEX ON test3bpci (x); -- error
|
||
ERROR: could not create unique index "test3bpci_x_idx"
|
||
DETAIL: Key (x)=(abc) is duplicated.
|
||
SELECT string_to_array('ABC,DEF,GHI'::char(11) COLLATE case_insensitive, ',', 'abc');
|
||
ERROR: nondeterministic collations are not supported for substring searches
|
||
SELECT string_to_array('ABCDEFGHI'::char(9) COLLATE case_insensitive, NULL, 'b');
|
||
string_to_array
|
||
------------------------
|
||
{A,NULL,C,D,E,F,G,H,I}
|
||
(1 row)
|
||
|
||
-- This tests the issue described in match_pattern_prefix(). In the
|
||
-- absence of that check, the case_insensitive tests below would
|
||
-- return no rows where they should logically return one.
|
||
CREATE TABLE test4c (x text COLLATE "C");
|
||
INSERT INTO test4c VALUES ('abc');
|
||
CREATE INDEX ON test4c (x);
|
||
SET enable_seqscan = off;
|
||
SELECT x FROM test4c WHERE x LIKE 'ABC' COLLATE case_sensitive; -- ok, no rows
|
||
x
|
||
---
|
||
(0 rows)
|
||
|
||
SELECT x FROM test4c WHERE x LIKE 'ABC%' COLLATE case_sensitive; -- ok, no rows
|
||
x
|
||
---
|
||
(0 rows)
|
||
|
||
SELECT x FROM test4c WHERE x LIKE 'ABC' COLLATE case_insensitive; -- error
|
||
ERROR: nondeterministic collations are not supported for LIKE
|
||
SELECT x FROM test4c WHERE x LIKE 'ABC%' COLLATE case_insensitive; -- error
|
||
ERROR: nondeterministic collations are not supported for LIKE
|
||
RESET enable_seqscan;
|
||
-- Unicode special case: different variants of Greek lower case sigma.
|
||
-- A naive implementation like citext that just does lower(x) =
|
||
-- lower(y) will do the wrong thing here, because lower('Σ') is 'σ'
|
||
-- but upper('ς') is 'Σ'.
|
||
SELECT 'ὀδυσσεύς' = 'ὈΔΥΣΣΕΎΣ' COLLATE case_sensitive;
|
||
?column?
|
||
----------
|
||
f
|
||
(1 row)
|
||
|
||
SELECT 'ὀδυσσεύς' = 'ὈΔΥΣΣΕΎΣ' COLLATE case_insensitive;
|
||
?column?
|
||
----------
|
||
t
|
||
(1 row)
|
||
|
||
-- name vs. text comparison operators
|
||
SELECT relname FROM pg_class WHERE relname = 'PG_CLASS'::text COLLATE case_insensitive;
|
||
relname
|
||
----------
|
||
pg_class
|
||
(1 row)
|
||
|
||
SELECT relname FROM pg_class WHERE 'PG_CLASS'::text = relname COLLATE case_insensitive;
|
||
relname
|
||
----------
|
||
pg_class
|
||
(1 row)
|
||
|
||
SELECT typname FROM pg_type WHERE typname LIKE 'int_' AND typname <> 'INT2'::text COLLATE case_insensitive;
|
||
typname
|
||
---------
|
||
int4
|
||
int8
|
||
(2 rows)
|
||
|
||
SELECT typname FROM pg_type WHERE typname LIKE 'int_' AND 'INT2'::text <> typname COLLATE case_insensitive;;
|
||
typname
|
||
---------
|
||
int4
|
||
int8
|
||
(2 rows)
|
||
|
||
-- test case adapted from subselect.sql
|
||
CREATE TEMP TABLE outer_text (f1 text COLLATE case_insensitive, f2 text);
|
||
INSERT INTO outer_text VALUES ('a', 'a');
|
||
INSERT INTO outer_text VALUES ('b', 'a');
|
||
INSERT INTO outer_text VALUES ('A', NULL);
|
||
INSERT INTO outer_text VALUES ('B', NULL);
|
||
CREATE TEMP TABLE inner_text (c1 text COLLATE case_insensitive, c2 text);
|
||
INSERT INTO inner_text VALUES ('a', NULL);
|
||
SELECT * FROM outer_text WHERE (f1, f2) NOT IN (SELECT * FROM inner_text);
|
||
f1 | f2
|
||
----+----
|
||
b | a
|
||
B |
|
||
(2 rows)
|
||
|
||
-- accents
|
||
CREATE COLLATION ignore_accents (provider = icu, locale = 'und-u-ks-level1-kc-true', deterministic = false);
|
||
CREATE TABLE test4 (a int, b text);
|
||
INSERT INTO test4 VALUES (1, 'cote'), (2, 'côte'), (3, 'coté'), (4, 'côté');
|
||
SELECT * FROM test4 WHERE b = 'cote';
|
||
a | b
|
||
---+------
|
||
1 | cote
|
||
(1 row)
|
||
|
||
SELECT * FROM test4 WHERE b = 'cote' COLLATE ignore_accents;
|
||
a | b
|
||
---+------
|
||
1 | cote
|
||
2 | côte
|
||
3 | coté
|
||
4 | côté
|
||
(4 rows)
|
||
|
||
SELECT * FROM test4 WHERE b = 'Cote' COLLATE ignore_accents; -- still case-sensitive
|
||
a | b
|
||
---+---
|
||
(0 rows)
|
||
|
||
SELECT * FROM test4 WHERE b = 'Cote' COLLATE case_insensitive;
|
||
a | b
|
||
---+------
|
||
1 | cote
|
||
(1 row)
|
||
|
||
-- foreign keys (should use collation of primary key)
|
||
-- PK is case-sensitive, FK is case-insensitive
|
||
CREATE TABLE test10pk (x text COLLATE case_sensitive PRIMARY KEY);
|
||
INSERT INTO test10pk VALUES ('abc'), ('def'), ('ghi');
|
||
CREATE TABLE test10fk (x text COLLATE case_insensitive REFERENCES test10pk (x) ON UPDATE CASCADE ON DELETE CASCADE);
|
||
INSERT INTO test10fk VALUES ('abc'); -- ok
|
||
INSERT INTO test10fk VALUES ('ABC'); -- error
|
||
ERROR: insert or update on table "test10fk" violates foreign key constraint "test10fk_x_fkey"
|
||
DETAIL: Key (x)=(ABC) is not present in table "test10pk".
|
||
INSERT INTO test10fk VALUES ('xyz'); -- error
|
||
ERROR: insert or update on table "test10fk" violates foreign key constraint "test10fk_x_fkey"
|
||
DETAIL: Key (x)=(xyz) is not present in table "test10pk".
|
||
SELECT * FROM test10pk;
|
||
x
|
||
-----
|
||
abc
|
||
def
|
||
ghi
|
||
(3 rows)
|
||
|
||
SELECT * FROM test10fk;
|
||
x
|
||
-----
|
||
abc
|
||
(1 row)
|
||
|
||
-- restrict update even though the values are "equal" in the FK table
|
||
UPDATE test10fk SET x = 'ABC' WHERE x = 'abc'; -- error
|
||
ERROR: insert or update on table "test10fk" violates foreign key constraint "test10fk_x_fkey"
|
||
DETAIL: Key (x)=(ABC) is not present in table "test10pk".
|
||
SELECT * FROM test10fk;
|
||
x
|
||
-----
|
||
abc
|
||
(1 row)
|
||
|
||
DELETE FROM test10pk WHERE x = 'abc';
|
||
SELECT * FROM test10pk;
|
||
x
|
||
-----
|
||
def
|
||
ghi
|
||
(2 rows)
|
||
|
||
SELECT * FROM test10fk;
|
||
x
|
||
---
|
||
(0 rows)
|
||
|
||
-- PK is case-insensitive, FK is case-sensitive
|
||
CREATE TABLE test11pk (x text COLLATE case_insensitive PRIMARY KEY);
|
||
INSERT INTO test11pk VALUES ('abc'), ('def'), ('ghi');
|
||
CREATE TABLE test11fk (x text COLLATE case_sensitive REFERENCES test11pk (x) ON UPDATE CASCADE ON DELETE CASCADE);
|
||
INSERT INTO test11fk VALUES ('abc'); -- ok
|
||
INSERT INTO test11fk VALUES ('ABC'); -- ok
|
||
INSERT INTO test11fk VALUES ('xyz'); -- error
|
||
ERROR: insert or update on table "test11fk" violates foreign key constraint "test11fk_x_fkey"
|
||
DETAIL: Key (x)=(xyz) is not present in table "test11pk".
|
||
SELECT * FROM test11pk;
|
||
x
|
||
-----
|
||
abc
|
||
def
|
||
ghi
|
||
(3 rows)
|
||
|
||
SELECT * FROM test11fk;
|
||
x
|
||
-----
|
||
abc
|
||
ABC
|
||
(2 rows)
|
||
|
||
-- cascade update even though the values are "equal" in the PK table
|
||
UPDATE test11pk SET x = 'ABC' WHERE x = 'abc';
|
||
SELECT * FROM test11fk;
|
||
x
|
||
-----
|
||
ABC
|
||
ABC
|
||
(2 rows)
|
||
|
||
DELETE FROM test11pk WHERE x = 'abc';
|
||
SELECT * FROM test11pk;
|
||
x
|
||
-----
|
||
def
|
||
ghi
|
||
(2 rows)
|
||
|
||
SELECT * FROM test11fk;
|
||
x
|
||
---
|
||
(0 rows)
|
||
|
||
-- partitioning
|
||
CREATE TABLE test20 (a int, b text COLLATE case_insensitive) PARTITION BY LIST (b);
|
||
CREATE TABLE test20_1 PARTITION OF test20 FOR VALUES IN ('abc');
|
||
INSERT INTO test20 VALUES (1, 'abc');
|
||
INSERT INTO test20 VALUES (2, 'ABC');
|
||
SELECT * FROM test20_1;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
2 | ABC
|
||
(2 rows)
|
||
|
||
CREATE TABLE test21 (a int, b text COLLATE case_insensitive) PARTITION BY RANGE (b);
|
||
CREATE TABLE test21_1 PARTITION OF test21 FOR VALUES FROM ('ABC') TO ('DEF');
|
||
INSERT INTO test21 VALUES (1, 'abc');
|
||
INSERT INTO test21 VALUES (2, 'ABC');
|
||
SELECT * FROM test21_1;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
2 | ABC
|
||
(2 rows)
|
||
|
||
CREATE TABLE test22 (a int, b text COLLATE case_sensitive) PARTITION BY HASH (b);
|
||
CREATE TABLE test22_0 PARTITION OF test22 FOR VALUES WITH (MODULUS 2, REMAINDER 0);
|
||
CREATE TABLE test22_1 PARTITION OF test22 FOR VALUES WITH (MODULUS 2, REMAINDER 1);
|
||
INSERT INTO test22 VALUES (1, 'def');
|
||
INSERT INTO test22 VALUES (2, 'DEF');
|
||
-- they end up in different partitions
|
||
SELECT (SELECT count(*) FROM test22_0) = (SELECT count(*) FROM test22_1);
|
||
?column?
|
||
----------
|
||
t
|
||
(1 row)
|
||
|
||
CREATE TABLE test23 (a int, b text COLLATE case_insensitive) PARTITION BY HASH (b);
|
||
CREATE TABLE test23_0 PARTITION OF test23 FOR VALUES WITH (MODULUS 2, REMAINDER 0);
|
||
CREATE TABLE test23_1 PARTITION OF test23 FOR VALUES WITH (MODULUS 2, REMAINDER 1);
|
||
INSERT INTO test23 VALUES (1, 'def');
|
||
INSERT INTO test23 VALUES (2, 'DEF');
|
||
-- they end up in the same partition (but it's platform-dependent which one)
|
||
SELECT (SELECT count(*) FROM test23_0) <> (SELECT count(*) FROM test23_1);
|
||
?column?
|
||
----------
|
||
t
|
||
(1 row)
|
||
|
||
CREATE TABLE test30 (a int, b char(3) COLLATE case_insensitive) PARTITION BY LIST (b);
|
||
CREATE TABLE test30_1 PARTITION OF test30 FOR VALUES IN ('abc');
|
||
INSERT INTO test30 VALUES (1, 'abc');
|
||
INSERT INTO test30 VALUES (2, 'ABC');
|
||
SELECT * FROM test30_1;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
2 | ABC
|
||
(2 rows)
|
||
|
||
CREATE TABLE test31 (a int, b char(3) COLLATE case_insensitive) PARTITION BY RANGE (b);
|
||
CREATE TABLE test31_1 PARTITION OF test31 FOR VALUES FROM ('ABC') TO ('DEF');
|
||
INSERT INTO test31 VALUES (1, 'abc');
|
||
INSERT INTO test31 VALUES (2, 'ABC');
|
||
SELECT * FROM test31_1;
|
||
a | b
|
||
---+-----
|
||
1 | abc
|
||
2 | ABC
|
||
(2 rows)
|
||
|
||
CREATE TABLE test32 (a int, b char(3) COLLATE case_sensitive) PARTITION BY HASH (b);
|
||
CREATE TABLE test32_0 PARTITION OF test32 FOR VALUES WITH (MODULUS 2, REMAINDER 0);
|
||
CREATE TABLE test32_1 PARTITION OF test32 FOR VALUES WITH (MODULUS 2, REMAINDER 1);
|
||
INSERT INTO test32 VALUES (1, 'def');
|
||
INSERT INTO test32 VALUES (2, 'DEF');
|
||
-- they end up in different partitions
|
||
SELECT (SELECT count(*) FROM test32_0) = (SELECT count(*) FROM test32_1);
|
||
?column?
|
||
----------
|
||
t
|
||
(1 row)
|
||
|
||
CREATE TABLE test33 (a int, b char(3) COLLATE case_insensitive) PARTITION BY HASH (b);
|
||
CREATE TABLE test33_0 PARTITION OF test33 FOR VALUES WITH (MODULUS 2, REMAINDER 0);
|
||
CREATE TABLE test33_1 PARTITION OF test33 FOR VALUES WITH (MODULUS 2, REMAINDER 1);
|
||
INSERT INTO test33 VALUES (1, 'def');
|
||
INSERT INTO test33 VALUES (2, 'DEF');
|
||
-- they end up in the same partition (but it's platform-dependent which one)
|
||
SELECT (SELECT count(*) FROM test33_0) <> (SELECT count(*) FROM test33_1);
|
||
?column?
|
||
----------
|
||
t
|
||
(1 row)
|
||
|
||
-- cleanup
|
||
SET client_min_messages TO warning;
|
||
DROP SCHEMA collate_tests CASCADE;
|
||
RESET search_path;
|
||
-- leave a collation for pg_upgrade test
|
||
CREATE COLLATION coll_icu_upgrade FROM "und-x-icu";
|