670 lines
19 KiB
Plaintext
670 lines
19 KiB
Plaintext
/*
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* This test is intended to pass on all platforms supported by Postgres.
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* We can therefore only assume that the default, C, and POSIX collations
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* are available --- and since the regression tests are often run in a
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* C-locale database, these may well all have the same behavior. But
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* fortunately, the system doesn't know that and will treat them as
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* incompatible collations. It is therefore at least possible to test
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* parser behaviors such as collation conflict resolution. This test will,
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* however, be more revealing when run in a database with non-C locale,
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* since any departure from C sorting behavior will show as a failure.
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*/
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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 "C" 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 | Modifiers
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--------+---------+--------------------
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a | integer |
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b | text | collate C not null
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CREATE TABLE collate_test_fail (
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a int COLLATE "C",
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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 "C",
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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 | Modifiers
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--------+---------+--------------------
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a | integer |
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b | text | collate C not null
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CREATE TABLE collate_test2 (
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a int,
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b text COLLATE "POSIX"
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);
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INSERT INTO collate_test1 VALUES (1, 'abc'), (2, 'Abc'), (3, 'bbc'), (4, 'ABD');
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INSERT INTO collate_test2 SELECT * FROM collate_test1;
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SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'abc';
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a | b
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---+-----
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1 | abc
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3 | bbc
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(2 rows)
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SELECT * FROM collate_test1 WHERE b >= 'abc' COLLATE "C";
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a | b
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---+-----
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1 | abc
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3 | bbc
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(2 rows)
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SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'abc' COLLATE "C";
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a | b
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---+-----
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1 | abc
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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 "POSIX"; -- fail
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ERROR: collation mismatch between explicit collations "C" and "POSIX"
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LINE 1: ...* FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "P...
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^
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CREATE DOMAIN testdomain_p AS text COLLATE "POSIX";
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CREATE DOMAIN testdomain_i AS int COLLATE "POSIX"; -- fail
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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_p
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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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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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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_p COLLATE "C"
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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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4 | ABD
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2 | Abc
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1 | abc
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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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4 | ABD
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2 | Abc
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1 | abc
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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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4 | ABD
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2 | Abc
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1 | abc
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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 COLLATE "C";
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a | b
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---+-----
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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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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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4 | ABD
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2 | Abc
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1 | abc
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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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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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(4 rows)
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-- constant expression folding
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SELECT 'bbc' COLLATE "C" > 'Abc' COLLATE "C" 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 "POSIX" < 'Abc' COLLATE "POSIX" 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 "C",
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y text COLLATE "POSIX"
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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 | HIJ | Hij | Hij
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2 | hij | hij | HIJ | HIJ | Hij | Hij
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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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1 | hij | hij
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2 | HIJ | HIJ
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(2 rows)
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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 "POSIX") 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 "POSIX")) 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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4 | ABD
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2 | Abc
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1 | abc
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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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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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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 | hij
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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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2 | Abc | CCC
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4 | ABD | CCC
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1 | abc | abc
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3 | bbc | bbc
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(4 rows)
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SELECT a, b, greatest(b, 'CCC') FROM collate_test2 ORDER BY 3;
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a | b | greatest
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---+-----+----------
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2 | Abc | CCC
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4 | ABD | CCC
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1 | abc | abc
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3 | bbc | bbc
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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 | foo | foo
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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 | ABD
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2 | Abc
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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 | ABD
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2 | Abc
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3 | bbc
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1 |
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(4 rows)
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SELECT a, lower(nullif(x, 'foo')), lower(nullif(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 | hij
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(2 rows)
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SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test1 ORDER BY 2;
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a | b
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---+------
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4 | ABD
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2 | Abc
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1 | abcd
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3 | bbc
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(4 rows)
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SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test2 ORDER BY 2;
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a | b
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---+------
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4 | ABD
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2 | Abc
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1 | abcd
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3 | bbc
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(4 rows)
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CREATE DOMAIN testdomain AS text;
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SELECT a, b::testdomain FROM collate_test1 ORDER BY 2;
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a | b
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---+-----
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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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(4 rows)
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SELECT a, b::testdomain FROM collate_test2 ORDER BY 2;
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a | b
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---+-----
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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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(4 rows)
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SELECT a, b::testdomain_p FROM collate_test2 ORDER BY 2;
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a | b
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---+-----
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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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(4 rows)
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SELECT a, lower(x::testdomain), lower(y::testdomain) 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 min(b), max(b) FROM collate_test1;
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min | max
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-----+-----
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ABD | bbc
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(1 row)
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SELECT min(b), max(b) FROM collate_test2;
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min | max
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-----+-----
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ABD | bbc
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(1 row)
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SELECT array_agg(b ORDER BY b) FROM collate_test1;
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array_agg
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-------------------
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{ABD,Abc,abc,bbc}
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(1 row)
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SELECT array_agg(b ORDER BY b) FROM collate_test2;
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array_agg
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-------------------
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{ABD,Abc,abc,bbc}
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(1 row)
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-- In aggregates, ORDER BY expressions don't affect aggregate's collation
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SELECT string_agg(x COLLATE "C", y COLLATE "POSIX") FROM collate_test10; -- fail
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ERROR: collation mismatch between explicit collations "C" and "POSIX"
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LINE 1: SELECT string_agg(x COLLATE "C", y COLLATE "POSIX") FROM col...
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^
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SELECT array_agg(x COLLATE "C" ORDER BY y COLLATE "POSIX") FROM collate_test10;
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array_agg
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-----------
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{HIJ,hij}
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(1 row)
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SELECT array_agg(a ORDER BY x COLLATE "C", y COLLATE "POSIX") FROM collate_test10;
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array_agg
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-----------
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{2,1}
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(1 row)
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SELECT array_agg(a ORDER BY x||y) FROM collate_test10; -- fail
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ERROR: collation mismatch between implicit collations "C" and "POSIX"
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LINE 1: SELECT array_agg(a ORDER BY x||y) FROM collate_test10;
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^
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HINT: You can choose the collation by applying the COLLATE clause to one or both expressions.
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SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test1 ORDER BY 2;
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a | b
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---+-----
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4 | ABD
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4 | ABD
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2 | Abc
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2 | Abc
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1 | abc
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1 | abc
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3 | bbc
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3 | bbc
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(8 rows)
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SELECT a, b FROM collate_test2 UNION SELECT a, b FROM collate_test2 ORDER BY 2;
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a | b
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---+-----
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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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(4 rows)
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SELECT a, b FROM collate_test2 WHERE a < 4 INTERSECT SELECT a, b FROM collate_test2 WHERE a > 1 ORDER BY 2;
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a | b
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---+-----
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2 | Abc
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3 | bbc
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(2 rows)
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SELECT a, b FROM collate_test2 EXCEPT SELECT a, b FROM collate_test2 WHERE a < 2 ORDER BY 2;
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a | b
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---+-----
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4 | ABD
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2 | Abc
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3 | bbc
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(3 rows)
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SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test2 ORDER BY 2; -- fail
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ERROR: could not determine which collation to use for string comparison
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HINT: Use the COLLATE clause to set the collation explicitly.
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SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test2; -- ok
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a | b
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---+-----
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1 | abc
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2 | Abc
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3 | bbc
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4 | ABD
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1 | abc
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2 | Abc
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3 | bbc
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4 | ABD
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(8 rows)
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SELECT a, b FROM collate_test1 UNION SELECT a, b FROM collate_test2 ORDER BY 2; -- fail
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ERROR: collation mismatch between implicit collations "C" and "POSIX"
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LINE 1: SELECT a, b FROM collate_test1 UNION SELECT a, b FROM collat...
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^
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HINT: You can choose the collation by applying the COLLATE clause to one or both expressions.
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SELECT a, b COLLATE "C" FROM collate_test1 UNION SELECT a, b FROM collate_test2 ORDER BY 2; -- ok
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a | b
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---+-----
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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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(4 rows)
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SELECT a, b FROM collate_test1 INTERSECT SELECT a, b FROM collate_test2 ORDER BY 2; -- fail
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ERROR: collation mismatch between implicit collations "C" and "POSIX"
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LINE 1: ...ELECT a, b FROM collate_test1 INTERSECT SELECT a, b FROM col...
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^
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HINT: You can choose the collation by applying the COLLATE clause to one or both expressions.
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SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM collate_test2 ORDER BY 2; -- fail
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ERROR: collation mismatch between implicit collations "C" and "POSIX"
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LINE 1: SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM colla...
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^
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HINT: You can choose the collation by applying the COLLATE clause to one or both expressions.
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CREATE TABLE test_u AS SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test2; -- fail
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ERROR: no collation was derived for column "b" with collatable type text
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HINT: Use the COLLATE clause to set the collation explicitly.
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-- ideally this would be a parse-time error, but for now it must be run-time:
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select x < y from collate_test10; -- fail
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ERROR: could not determine which collation to use for string comparison
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HINT: Use the COLLATE clause to set the collation explicitly.
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select x || y from collate_test10; -- ok, because || is not collation aware
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?column?
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----------
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hijhij
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HIJHIJ
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(2 rows)
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select x, y from collate_test10 order by x || y; -- not so ok
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ERROR: collation mismatch between implicit collations "C" and "POSIX"
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LINE 1: select x, y from collate_test10 order by x || y;
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^
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HINT: You can choose the collation by applying the COLLATE clause to one or both expressions.
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-- collation mismatch between recursive and non-recursive term
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WITH RECURSIVE foo(x) AS
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(SELECT x FROM (VALUES('a' COLLATE "C"),('b')) t(x)
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UNION ALL
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SELECT (x || 'c') COLLATE "POSIX" FROM foo WHERE length(x) < 10)
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SELECT * FROM foo;
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ERROR: recursive query "foo" column 1 has collation "C" in non-recursive term but collation "POSIX" overall
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LINE 2: (SELECT x FROM (VALUES('a' COLLATE "C"),('b')) t(x)
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^
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HINT: Use the COLLATE clause to set the collation of the non-recursive term.
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SELECT a, b, a < b as lt FROM
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(VALUES ('a', 'B'), ('A', 'b' COLLATE "C")) v(a,b);
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a | b | lt
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---+---+----
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a | B | f
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A | b | t
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(2 rows)
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-- casting
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SELECT CAST('42' AS text COLLATE "C");
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ERROR: syntax error at or near "COLLATE"
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LINE 1: SELECT CAST('42' AS text COLLATE "C");
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^
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SELECT a, CAST(b AS varchar) FROM collate_test1 ORDER BY 2;
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a | b
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---+-----
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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
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(4 rows)
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SELECT a, CAST(b AS varchar) FROM collate_test2 ORDER BY 2;
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a | b
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---+-----
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4 | ABD
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2 | Abc
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1 | abc
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3 | bbc
|
|
(4 rows)
|
|
|
|
-- polymorphism
|
|
SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test1)) ORDER BY 1;
|
|
unnest
|
|
--------
|
|
ABD
|
|
Abc
|
|
abc
|
|
bbc
|
|
(4 rows)
|
|
|
|
SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test2)) ORDER BY 1;
|
|
unnest
|
|
--------
|
|
ABD
|
|
Abc
|
|
abc
|
|
bbc
|
|
(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
|
|
---+-----
|
|
4 | ABD
|
|
2 | Abc
|
|
1 | abc
|
|
3 | bbc
|
|
(4 rows)
|
|
|
|
SELECT a, dup(b) FROM collate_test2 ORDER BY 2;
|
|
a | dup
|
|
---+-----
|
|
4 | ABD
|
|
2 | Abc
|
|
1 | abc
|
|
3 | bbc
|
|
(4 rows)
|
|
|
|
-- indexes
|
|
CREATE INDEX collate_test1_idx1 ON collate_test1 (b);
|
|
CREATE INDEX collate_test1_idx2 ON collate_test1 (b COLLATE "POSIX");
|
|
CREATE INDEX collate_test1_idx3 ON collate_test1 ((b COLLATE "POSIX")); -- 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 "POSIX"); -- fail
|
|
ERROR: collations are not supported by type integer
|
|
CREATE INDEX collate_test1_idx6 ON collate_test1 ((a COLLATE "POSIX")); -- fail
|
|
ERROR: collations are not supported by type integer
|
|
LINE 1: ...ATE INDEX collate_test1_idx6 ON collate_test1 ((a COLLATE "P...
|
|
^
|
|
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_test1 USING btree (b)
|
|
collate_test1_idx2 | CREATE INDEX collate_test1_idx2 ON collate_test1 USING btree (b COLLATE "POSIX")
|
|
collate_test1_idx3 | CREATE INDEX collate_test1_idx3 ON collate_test1 USING btree (b COLLATE "POSIX")
|
|
collate_test1_idx4 | CREATE INDEX collate_test1_idx4 ON collate_test1 USING btree (((b || 'foo'::text)) COLLATE "POSIX")
|
|
(4 rows)
|
|
|
|
-- foreign keys
|
|
-- force indexes and mergejoins to be used for FK checking queries,
|
|
-- else they might not exercise collation-dependent operators
|
|
SET enable_seqscan TO 0;
|
|
SET enable_hashjoin TO 0;
|
|
SET enable_nestloop TO 0;
|
|
CREATE TABLE collate_test20 (f1 text COLLATE "C" PRIMARY KEY);
|
|
INSERT INTO collate_test20 VALUES ('foo'), ('bar');
|
|
CREATE TABLE collate_test21 (f2 text COLLATE "POSIX" REFERENCES collate_test20);
|
|
INSERT INTO collate_test21 VALUES ('foo'), ('bar');
|
|
INSERT INTO collate_test21 VALUES ('baz'); -- fail
|
|
ERROR: insert or update on table "collate_test21" violates foreign key constraint "collate_test21_f2_fkey"
|
|
DETAIL: Key (f2)=(baz) is not present in table "collate_test20".
|
|
CREATE TABLE collate_test22 (f2 text COLLATE "POSIX");
|
|
INSERT INTO collate_test22 VALUES ('foo'), ('bar'), ('baz');
|
|
ALTER TABLE collate_test22 ADD FOREIGN KEY (f2) REFERENCES collate_test20; -- fail
|
|
ERROR: insert or update on table "collate_test22" violates foreign key constraint "collate_test22_f2_fkey"
|
|
DETAIL: Key (f2)=(baz) is not present in table "collate_test20".
|
|
DELETE FROM collate_test22 WHERE f2 = 'baz';
|
|
ALTER TABLE collate_test22 ADD FOREIGN KEY (f2) REFERENCES collate_test20;
|
|
RESET enable_seqscan;
|
|
RESET enable_hashjoin;
|
|
RESET enable_nestloop;
|
|
-- EXPLAIN
|
|
EXPLAIN (COSTS OFF)
|
|
SELECT * FROM collate_test10 ORDER BY x, y;
|
|
QUERY PLAN
|
|
----------------------------------------------
|
|
Sort
|
|
Sort Key: x COLLATE "C", y COLLATE "POSIX"
|
|
-> Seq Scan on collate_test10
|
|
(3 rows)
|
|
|
|
EXPLAIN (COSTS OFF)
|
|
SELECT * FROM collate_test10 ORDER BY x DESC, y COLLATE "C" ASC NULLS FIRST;
|
|
QUERY PLAN
|
|
-----------------------------------------------------------
|
|
Sort
|
|
Sort Key: x COLLATE "C" DESC, y COLLATE "C" NULLS FIRST
|
|
-> Seq Scan on collate_test10
|
|
(3 rows)
|
|
|
|
-- 9.1 bug with useless COLLATE in an expression subject to length coercion
|
|
CREATE TEMP TABLE vctable (f1 varchar(25));
|
|
INSERT INTO vctable VALUES ('foo' COLLATE "C");
|
|
SELECT collation for ('foo'); -- unknown type - null
|
|
pg_collation_for
|
|
------------------
|
|
|
|
(1 row)
|
|
|
|
SELECT collation for ('foo'::text);
|
|
pg_collation_for
|
|
------------------
|
|
"default"
|
|
(1 row)
|
|
|
|
SELECT collation for ((SELECT a FROM collate_test1 LIMIT 1)); -- non-collatable type - error
|
|
ERROR: collations are not supported by type integer
|
|
SELECT collation for ((SELECT b FROM collate_test1 LIMIT 1));
|
|
pg_collation_for
|
|
------------------
|
|
"C"
|
|
(1 row)
|
|
|
|
--
|
|
-- Clean up. Many of these table names will be re-used if the user is
|
|
-- trying to run any platform-specific collation tests later, so we
|
|
-- must get rid of them.
|
|
--
|
|
DROP SCHEMA collate_tests CASCADE;
|
|
NOTICE: drop cascades to 15 other objects
|
|
DETAIL: drop cascades to table collate_test1
|
|
drop cascades to table collate_test_like
|
|
drop cascades to table collate_test2
|
|
drop cascades to type testdomain_p
|
|
drop cascades to table collate_test4
|
|
drop cascades to table collate_test5
|
|
drop cascades to table collate_test10
|
|
drop cascades to view collview1
|
|
drop cascades to view collview2
|
|
drop cascades to view collview3
|
|
drop cascades to type testdomain
|
|
drop cascades to function dup(anyelement)
|
|
drop cascades to table collate_test20
|
|
drop cascades to table collate_test21
|
|
drop cascades to table collate_test22
|