2023-01-03 14:21:40 +01:00
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/*
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* This test is meant to run on Windows systems that has successfully
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* run pg_import_system_collations(). Also, the database must have
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* WIN1252 encoding, because of the locales' own encodings. Because
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* of this, some test are lost from UTF-8 version, such as Turkish
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* dotted and undotted 'i'.
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*/
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SELECT getdatabaseencoding() <> 'WIN1252' OR
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(SELECT count(*) FROM pg_collation WHERE collname IN ('de_DE', 'en_US', 'sv_SE') AND collencoding = pg_char_to_encoding('WIN1252')) <> 3 OR
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(version() !~ 'Visual C\+\+' AND version() !~ 'mingw32' AND version() !~ 'windows')
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AS skip_test \gset
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\if :skip_test
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\quit
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\endif
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SET client_encoding TO WIN1252;
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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_US" 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_US | 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"
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);
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ERROR: collation "ja_JP.eucjp" for encoding "WIN1252" does not exist
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LINE 3: b text COLLATE "ja_JP.eucjp"
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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"
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);
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ERROR: collation "foo" for encoding "WIN1252" does not exist
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LINE 3: b text COLLATE "foo"
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^
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CREATE TABLE collate_test_fail (
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a int COLLATE "en_US",
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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_US",
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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_US | not null |
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CREATE TABLE collate_test2 (
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a int,
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b text COLLATE "sv_SE"
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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, '<27>bc'), (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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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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_US";
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ERROR: collation mismatch between explicit collations "C" and "en_US"
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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_SE";
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CREATE DOMAIN testdomain_i AS int COLLATE "sv_SE"; -- 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 | <20>bc
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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_US"
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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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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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 | <20>bc
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(4 rows)
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-- constant expression folding
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SELECT 'bbc' COLLATE "en_US" > '<27>bc' COLLATE "en_US" 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_SE" > '<27>bc' COLLATE "sv_SE" 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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-- 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 | <20>bc
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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 | <20>bc
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3 | bbc
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4 | ABC
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(4 rows)
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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$';
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a | b
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---+-----
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1 | abc
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(1 row)
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SELECT * FROM collate_test1 WHERE b ~ '^abc';
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a | b
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---+-----
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1 | abc
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(1 row)
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SELECT * FROM collate_test1 WHERE b ~ 'bc';
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a | b
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---+-----
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1 | abc
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2 | <20>bc
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3 | bbc
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(3 rows)
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SELECT * FROM collate_test1 WHERE b ~* '^abc$';
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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 | <20>bc
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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_US"
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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, '<27>b<EFBFBD>'), (10, '<27>B<EFBFBD>');
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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
|
|
|
|
|
123 | f | f | f | t | t | t | t | f | f
|
|
|
|
|
ab1 | f | f | f | f | t | t | t | f | f
|
|
|
|
|
a1! | f | f | f | f | f | t | t | f | f
|
|
|
|
|
a c | f | f | f | f | f | f | t | f | f
|
|
|
|
|
!.; | f | f | f | f | f | t | t | t | f
|
|
|
|
|
| f | f | f | f | f | f | t | f | t
|
|
|
|
|
<20>b<EFBFBD> | t | f | t | f | t | t | t | f | f
|
|
|
|
|
<20>B<EFBFBD> | t | t | f | f | t | t | t | f | f
|
|
|
|
|
(10 rows)
|
|
|
|
|
|
|
|
|
|
-- The following actually exercises the selectivity estimation for ~*.
|
|
|
|
|
SELECT relname FROM pg_class WHERE relname ~* '^abc';
|
|
|
|
|
relname
|
|
|
|
|
---------
|
|
|
|
|
(0 rows)
|
|
|
|
|
|
|
|
|
|
-- backwards parsing
|
|
|
|
|
CREATE VIEW collview1 AS SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc';
|
|
|
|
|
CREATE VIEW collview2 AS SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C";
|
|
|
|
|
SELECT table_name, view_definition FROM information_schema.views
|
|
|
|
|
WHERE table_name LIKE 'collview%' ORDER BY 1;
|
2023-01-18 21:27:29 +01:00
|
|
|
|
table_name | view_definition
|
|
|
|
|
------------+-------------------------------------------
|
|
|
|
|
collview1 | SELECT a, +
|
|
|
|
|
| b +
|
|
|
|
|
| FROM collate_test1 +
|
|
|
|
|
| WHERE ((b COLLATE "C") >= 'bbc'::text);
|
|
|
|
|
collview2 | SELECT a, +
|
|
|
|
|
| b +
|
|
|
|
|
| FROM collate_test1 +
|
|
|
|
|
| ORDER BY (b COLLATE "C");
|
2023-01-03 14:21:40 +01:00
|
|
|
|
(2 rows)
|
|
|
|
|
|
|
|
|
|
-- collation propagation in various expression types
|
|
|
|
|
SELECT a, coalesce(b, 'foo') FROM collate_test1 ORDER BY 2;
|
|
|
|
|
a | coalesce
|
|
|
|
|
---+----------
|
|
|
|
|
1 | abc
|
|
|
|
|
4 | ABC
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
3 | bbc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, coalesce(b, 'foo') FROM collate_test2 ORDER BY 2;
|
|
|
|
|
a | coalesce
|
|
|
|
|
---+----------
|
|
|
|
|
1 | abc
|
|
|
|
|
4 | ABC
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, coalesce(b, 'foo') FROM collate_test3 ORDER BY 2;
|
|
|
|
|
a | coalesce
|
|
|
|
|
---+----------
|
|
|
|
|
4 | ABC
|
|
|
|
|
1 | abc
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, b, greatest(b, 'CCC') FROM collate_test1 ORDER BY 3;
|
|
|
|
|
a | b | greatest
|
|
|
|
|
---+-----+----------
|
|
|
|
|
1 | abc | CCC
|
|
|
|
|
2 | <20>bc | CCC
|
|
|
|
|
3 | bbc | CCC
|
|
|
|
|
4 | ABC | CCC
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, b, greatest(b, 'CCC') FROM collate_test2 ORDER BY 3;
|
|
|
|
|
a | b | greatest
|
|
|
|
|
---+-----+----------
|
|
|
|
|
1 | abc | CCC
|
|
|
|
|
3 | bbc | CCC
|
|
|
|
|
4 | ABC | CCC
|
|
|
|
|
2 | <20>bc | <20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, b, greatest(b, 'CCC') FROM collate_test3 ORDER BY 3;
|
|
|
|
|
a | b | greatest
|
|
|
|
|
---+-----+----------
|
|
|
|
|
4 | ABC | CCC
|
|
|
|
|
1 | abc | abc
|
|
|
|
|
3 | bbc | bbc
|
|
|
|
|
2 | <20>bc | <20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, nullif(b, 'abc') FROM collate_test1 ORDER BY 2;
|
|
|
|
|
a | nullif
|
|
|
|
|
---+--------
|
|
|
|
|
4 | ABC
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
3 | bbc
|
|
|
|
|
1 |
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, nullif(b, 'abc') FROM collate_test2 ORDER BY 2;
|
|
|
|
|
a | nullif
|
|
|
|
|
---+--------
|
|
|
|
|
4 | ABC
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
1 |
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, nullif(b, 'abc') FROM collate_test3 ORDER BY 2;
|
|
|
|
|
a | nullif
|
|
|
|
|
---+--------
|
|
|
|
|
4 | ABC
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
1 |
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test1 ORDER BY 2;
|
|
|
|
|
a | b
|
|
|
|
|
---+------
|
|
|
|
|
4 | ABC
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
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 | <20>bc
|
|
|
|
|
(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 | <20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
CREATE DOMAIN testdomain AS text;
|
|
|
|
|
SELECT a, b::testdomain FROM collate_test1 ORDER BY 2;
|
|
|
|
|
a | b
|
|
|
|
|
---+-----
|
|
|
|
|
1 | abc
|
|
|
|
|
4 | ABC
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
3 | bbc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, b::testdomain FROM collate_test2 ORDER BY 2;
|
|
|
|
|
a | b
|
|
|
|
|
---+-----
|
|
|
|
|
1 | abc
|
|
|
|
|
4 | ABC
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, b::testdomain FROM collate_test3 ORDER BY 2;
|
|
|
|
|
a | b
|
|
|
|
|
---+-----
|
|
|
|
|
4 | ABC
|
|
|
|
|
1 | abc
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, b::testdomain_sv FROM collate_test3 ORDER BY 2;
|
|
|
|
|
a | b
|
|
|
|
|
---+-----
|
|
|
|
|
1 | abc
|
|
|
|
|
4 | ABC
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
(4 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 | <20>bc
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
|
|
SELECT min(b), max(b) FROM collate_test3;
|
|
|
|
|
min | max
|
|
|
|
|
-----+-----
|
|
|
|
|
ABC | <20>bc
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
|
|
SELECT array_agg(b ORDER BY b) FROM collate_test1;
|
|
|
|
|
array_agg
|
|
|
|
|
-------------------
|
|
|
|
|
{abc,ABC,<2C>bc,bbc}
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
|
|
SELECT array_agg(b ORDER BY b) FROM collate_test2;
|
|
|
|
|
array_agg
|
|
|
|
|
-------------------
|
|
|
|
|
{abc,ABC,bbc,<2C>bc}
|
|
|
|
|
(1 row)
|
|
|
|
|
|
|
|
|
|
SELECT array_agg(b ORDER BY b) FROM collate_test3;
|
|
|
|
|
array_agg
|
|
|
|
|
-------------------
|
|
|
|
|
{ABC,abc,bbc,<2C>bc}
|
|
|
|
|
(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 | <20>bc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
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 | <20>bc
|
|
|
|
|
(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 | <20>bc
|
|
|
|
|
(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 | <20>bc
|
|
|
|
|
(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 | <20>bc
|
|
|
|
|
3 | bbc
|
|
|
|
|
4 | ABC
|
|
|
|
|
1 | abc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
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_US" 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 | <20>bc
|
|
|
|
|
(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_US" 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_US" 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.
|
|
|
|
|
-- collation mismatch between recursive and non-recursive term
|
|
|
|
|
WITH RECURSIVE foo(x) AS
|
|
|
|
|
(SELECT x FROM (VALUES('a' COLLATE "en_US"),('b')) t(x)
|
|
|
|
|
UNION ALL
|
|
|
|
|
SELECT (x || 'c') COLLATE "de_DE" FROM foo WHERE length(x) < 10)
|
|
|
|
|
SELECT * FROM foo;
|
|
|
|
|
ERROR: recursive query "foo" column 1 has collation "en_US" in non-recursive term but collation "de_DE" overall
|
|
|
|
|
LINE 2: (SELECT x FROM (VALUES('a' COLLATE "en_US"),('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 | <20>bc
|
|
|
|
|
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 | <20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, CAST(b AS varchar) FROM collate_test3 ORDER BY 2;
|
|
|
|
|
a | b
|
|
|
|
|
---+-----
|
|
|
|
|
4 | ABC
|
|
|
|
|
1 | abc
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
(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 | <20>bc | t | t | t | t
|
|
|
|
|
abc | bbc | t | t | t | t
|
|
|
|
|
ABC | abc | f | f | f | f
|
|
|
|
|
ABC | ABC | f | f | f | f
|
|
|
|
|
ABC | <20>bc | t | t | t | t
|
|
|
|
|
ABC | bbc | t | t | t | t
|
|
|
|
|
<20>bc | abc | f | f | f | f
|
|
|
|
|
<20>bc | ABC | f | f | f | f
|
|
|
|
|
<20>bc | <20>bc | f | f | f | f
|
|
|
|
|
<20>bc | bbc | t | t | t | t
|
|
|
|
|
bbc | abc | f | f | f | f
|
|
|
|
|
bbc | ABC | f | f | f | f
|
|
|
|
|
bbc | <20>bc | 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 | <20>bc | t | t | t | t
|
|
|
|
|
abc | bbc | t | t | t | t
|
|
|
|
|
ABC | abc | t | t | t | t
|
|
|
|
|
ABC | ABC | f | f | f | f
|
|
|
|
|
ABC | <20>bc | t | t | t | t
|
|
|
|
|
ABC | bbc | t | t | t | t
|
|
|
|
|
<20>bc | abc | f | f | f | f
|
|
|
|
|
<20>bc | ABC | f | f | f | f
|
|
|
|
|
<20>bc | <20>bc | f | f | f | f
|
|
|
|
|
<20>bc | bbc | f | f | f | f
|
|
|
|
|
bbc | abc | f | f | f | f
|
|
|
|
|
bbc | ABC | f | f | f | f
|
|
|
|
|
bbc | <20>bc | 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_US") 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
|
|
|
|
|
<20>bc
|
|
|
|
|
bbc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test2)) ORDER BY 1;
|
|
|
|
|
unnest
|
|
|
|
|
--------
|
|
|
|
|
abc
|
|
|
|
|
ABC
|
|
|
|
|
bbc
|
|
|
|
|
<20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test3)) ORDER BY 1;
|
|
|
|
|
unnest
|
|
|
|
|
--------
|
|
|
|
|
ABC
|
|
|
|
|
abc
|
|
|
|
|
bbc
|
|
|
|
|
<20>bc
|
|
|
|
|
(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 | <20>bc
|
|
|
|
|
3 | bbc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, dup(b) FROM collate_test2 ORDER BY 2;
|
|
|
|
|
a | dup
|
|
|
|
|
---+-----
|
|
|
|
|
1 | abc
|
|
|
|
|
4 | ABC
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
(4 rows)
|
|
|
|
|
|
|
|
|
|
SELECT a, dup(b) FROM collate_test3 ORDER BY 2;
|
|
|
|
|
a | dup
|
|
|
|
|
---+-----
|
|
|
|
|
4 | ABC
|
|
|
|
|
1 | abc
|
|
|
|
|
3 | bbc
|
|
|
|
|
2 | <20>bc
|
|
|
|
|
(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 $$
|
|
|
|
|
BEGIN
|
|
|
|
|
EXECUTE 'CREATE COLLATION test0 (locale = ' ||
|
2023-06-07 16:57:06 +02:00
|
|
|
|
quote_literal((SELECT datcollate FROM pg_database WHERE datname = current_database())) || ');';
|
2023-01-03 14:21:40 +01:00
|
|
|
|
END
|
|
|
|
|
$$;
|
|
|
|
|
CREATE COLLATION test0 FROM "C"; -- fail, duplicate name
|
|
|
|
|
ERROR: collation "test0" already exists
|
|
|
|
|
CREATE COLLATION IF NOT EXISTS test0 FROM "C"; -- ok, skipped
|
|
|
|
|
NOTICE: collation "test0" already exists, skipping
|
|
|
|
|
CREATE COLLATION IF NOT EXISTS test0 (locale = 'foo'); -- ok, skipped
|
|
|
|
|
NOTICE: collation "test0" for encoding "WIN1252" already exists, skipping
|
|
|
|
|
do $$
|
|
|
|
|
BEGIN
|
|
|
|
|
EXECUTE 'CREATE COLLATION test1 (lc_collate = ' ||
|
2023-06-07 16:57:06 +02:00
|
|
|
|
quote_literal((SELECT datcollate FROM pg_database WHERE datname = current_database())) ||
|
2023-01-03 14:21:40 +01:00
|
|
|
|
', lc_ctype = ' ||
|
2023-06-07 16:57:06 +02:00
|
|
|
|
quote_literal((SELECT datctype FROM pg_database WHERE datname = current_database())) || ');';
|
2023-01-03 14:21:40 +01:00
|
|
|
|
END
|
|
|
|
|
$$;
|
|
|
|
|
CREATE COLLATION test3 (lc_collate = 'en_US.utf8'); -- fail, need lc_ctype
|
|
|
|
|
ERROR: parameter "lc_ctype" must be specified
|
|
|
|
|
CREATE COLLATION testx (locale = 'nonsense'); -- fail
|
|
|
|
|
ERROR: could not create locale "nonsense": No such file or directory
|
|
|
|
|
DETAIL: The operating system could not find any locale data for the locale name "nonsense".
|
|
|
|
|
CREATE COLLATION test4 FROM nonsense;
|
|
|
|
|
ERROR: collation "nonsense" for encoding "WIN1252" 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" for encoding "WIN1252" already exists in schema "collate_tests"
|
|
|
|
|
ALTER COLLATION test1 RENAME TO test22; -- fail
|
|
|
|
|
ERROR: collation "test1" for encoding "WIN1252" 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 "WIN1252" 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_US" REFRESH VERSION;
|
|
|
|
|
NOTICE: version has not changed
|
|
|
|
|
-- also test for database while we are here
|
|
|
|
|
SELECT current_database() AS datname \gset
|
|
|
|
|
ALTER DATABASE :"datname" REFRESH COLLATION 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
|
|
|
|
|
--------+---------+-----------+----------+---------
|
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x | integer | | |
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DROP TABLE collate_dep_test1, collate_dep_test4t;
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DROP TYPE collate_dep_test2;
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-- test range types and collations
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create type textrange_c as range(subtype=text, collation="C");
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create type textrange_en_us as range(subtype=text, collation="en_US");
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select textrange_c('A','Z') @> 'b'::text;
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?column?
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----------
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f
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(1 row)
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select textrange_en_us('A','Z') @> 'b'::text;
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?column?
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----------
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t
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(1 row)
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drop type textrange_c;
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drop type textrange_en_us;
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-- nondeterministic collations
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-- (not supported with libc provider)
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2023-12-29 20:26:10 +01:00
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do $$
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BEGIN
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EXECUTE 'CREATE COLLATION ctest_det (locale = ' ||
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quote_literal((SELECT collcollate FROM pg_collation WHERE
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collname = 'en_US')) || ', deterministic = true);';
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END
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$$;
|
2023-01-03 14:21:40 +01:00
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CREATE COLLATION ctest_nondet (locale = 'en_US', deterministic = false);
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ERROR: nondeterministic collations not supported with this provider
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-- cleanup
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SET client_min_messages TO warning;
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DROP SCHEMA collate_tests CASCADE;
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