1128 lines
30 KiB
Plaintext
1128 lines
30 KiB
Plaintext
/*
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* This test is for Linux/glibc systems and assumes that a full set of
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* locales is installed. It must be run in a database with UTF-8 encoding,
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* because other encodings don't support all the characters used.
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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_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 "UTF8" 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 "UTF8" 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, '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_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 | 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_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 | 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_US" > 'äbc' 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" > 'äbc' 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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-- upper/lower
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CREATE TABLE collate_test10 (
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a int,
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x text COLLATE "en_US",
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y text COLLATE "tr_TR"
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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_US" 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_TR" 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_US" 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_TR" 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_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, '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_US" ~* '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_TR" ~* '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' ~* 'BIT' COLLATE "en_US" 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_TR" 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 ~*.
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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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-- 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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to_char
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-------------
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01 NIS 2010
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(1 row)
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SELECT to_char(date '2010-04-01', 'DD TMMON YYYY' COLLATE "tr_TR");
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to_char
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-------------
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01 NİS 2010
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(1 row)
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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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||
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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_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 | 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_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.
|
||
-- 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_US" and "tr_TR"
|
||
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_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 | 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_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
|
||
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 $$
|
||
BEGIN
|
||
EXECUTE 'CREATE COLLATION test0 (locale = ' ||
|
||
quote_literal(current_setting('lc_collate')) || ');';
|
||
END
|
||
$$;
|
||
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 "UTF8" already exists, skipping
|
||
do $$
|
||
BEGIN
|
||
EXECUTE 'CREATE COLLATION test1 (lc_collate = ' ||
|
||
quote_literal(current_setting('lc_collate')) ||
|
||
', lc_ctype = ' ||
|
||
quote_literal(current_setting('lc_ctype')) || ');';
|
||
END
|
||
$$;
|
||
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 testy (locale = 'en_US.utf8', version = 'foo'); -- fail, no versions for libc
|
||
ERROR: collation "testy" has no actual version, but a version was specified
|
||
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" for encoding "UTF8" 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_US" 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_US");
|
||
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;
|
||
-- nondeterministic collations
|
||
-- (not supported with libc provider)
|
||
CREATE COLLATION ctest_det (locale = 'en_US.utf8', deterministic = true);
|
||
CREATE COLLATION ctest_nondet (locale = 'en_US.utf8', deterministic = false);
|
||
ERROR: nondeterministic collations not supported with this provider
|
||
-- cleanup
|
||
SET client_min_messages TO warning;
|
||
DROP SCHEMA collate_tests CASCADE;
|