269 lines
9.8 KiB
SQL
269 lines
9.8 KiB
SQL
/*
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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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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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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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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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SELECT * FROM collate_test1 WHERE b >= 'abc' COLLATE "C";
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SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'abc' COLLATE "C";
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SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "POSIX"; -- fail
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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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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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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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SELECT a, b FROM collate_test1 ORDER BY b;
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SELECT a, b FROM collate_test2 ORDER BY b;
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SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C";
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-- star expansion
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SELECT * FROM collate_test1 ORDER BY b;
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SELECT * FROM collate_test2 ORDER BY b;
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-- constant expression folding
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SELECT 'bbc' COLLATE "C" > 'Abc' COLLATE "C" AS "true";
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SELECT 'bbc' COLLATE "POSIX" < 'Abc' COLLATE "POSIX" AS "false";
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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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SELECT a, lower(x COLLATE "C"), lower(y COLLATE "C") FROM collate_test10;
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SELECT a, x, y FROM collate_test10 ORDER BY lower(y), a;
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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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-- 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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SELECT a, coalesce(b, 'foo') FROM collate_test2 ORDER BY 2;
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SELECT a, lower(coalesce(x, 'foo')), lower(coalesce(y, 'foo')) FROM collate_test10;
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SELECT a, b, greatest(b, 'CCC') FROM collate_test1 ORDER BY 3;
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SELECT a, b, greatest(b, 'CCC') FROM collate_test2 ORDER BY 3;
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SELECT a, x, y, lower(greatest(x, 'foo')), lower(greatest(y, 'foo')) FROM collate_test10;
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SELECT a, nullif(b, 'abc') FROM collate_test1 ORDER BY 2;
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SELECT a, nullif(b, 'abc') FROM collate_test2 ORDER BY 2;
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SELECT a, lower(nullif(x, 'foo')), lower(nullif(y, 'foo')) FROM collate_test10;
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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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SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test2 ORDER BY 2;
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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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SELECT a, b::testdomain FROM collate_test2 ORDER BY 2;
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SELECT a, b::testdomain_p FROM collate_test2 ORDER BY 2;
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SELECT a, lower(x::testdomain), lower(y::testdomain) FROM collate_test10;
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SELECT min(b), max(b) FROM collate_test1;
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SELECT min(b), max(b) FROM collate_test2;
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SELECT array_agg(b ORDER BY b) FROM collate_test1;
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SELECT array_agg(b ORDER BY b) FROM collate_test2;
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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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SELECT array_agg(x COLLATE "C" ORDER BY y COLLATE "POSIX") FROM collate_test10;
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SELECT array_agg(a ORDER BY x COLLATE "C", y COLLATE "POSIX") FROM collate_test10;
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SELECT array_agg(a ORDER BY x||y) FROM collate_test10; -- fail
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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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SELECT a, b FROM collate_test2 UNION SELECT a, b FROM collate_test2 ORDER BY 2;
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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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SELECT a, b FROM collate_test2 EXCEPT SELECT a, b FROM collate_test2 WHERE a < 2 ORDER BY 2;
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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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SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test2; -- ok
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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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SELECT a, b COLLATE "C" FROM collate_test1 UNION SELECT a, b FROM collate_test2 ORDER BY 2; -- ok
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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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SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM collate_test2 ORDER BY 2; -- fail
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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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-- 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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select x || y from collate_test10; -- ok, because || is not collation aware
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select x, y from collate_test10 order by x || y; -- not so ok
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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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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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-- collation mismatch in subselects
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SELECT * FROM collate_test10 WHERE (x, y) NOT IN (SELECT y, x FROM collate_test10);
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-- now it works with overrides
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SELECT * FROM collate_test10 WHERE (x COLLATE "POSIX", y COLLATE "C") NOT IN (SELECT y, x FROM collate_test10);
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SELECT * FROM collate_test10 WHERE (x, y) NOT IN (SELECT y COLLATE "C", x COLLATE "POSIX" FROM collate_test10);
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-- casting
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SELECT CAST('42' AS text COLLATE "C");
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SELECT a, CAST(b AS varchar) FROM collate_test1 ORDER BY 2;
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SELECT a, CAST(b AS varchar) FROM collate_test2 ORDER BY 2;
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-- polymorphism
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SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test1)) ORDER BY 1;
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SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test2)) ORDER BY 1;
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CREATE FUNCTION dup (anyelement) RETURNS anyelement
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AS 'select $1' LANGUAGE sql;
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SELECT a, dup(b) FROM collate_test1 ORDER BY 2;
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SELECT a, dup(b) FROM collate_test2 ORDER BY 2;
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-- indexes
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CREATE INDEX collate_test1_idx1 ON collate_test1 (b);
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CREATE INDEX collate_test1_idx2 ON collate_test1 (b COLLATE "POSIX");
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CREATE INDEX collate_test1_idx3 ON collate_test1 ((b COLLATE "POSIX")); -- this is different grammatically
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CREATE INDEX collate_test1_idx4 ON collate_test1 (((b||'foo') COLLATE "POSIX"));
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CREATE INDEX collate_test1_idx5 ON collate_test1 (a COLLATE "POSIX"); -- fail
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CREATE INDEX collate_test1_idx6 ON collate_test1 ((a COLLATE "POSIX")); -- fail
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SELECT relname, pg_get_indexdef(oid) FROM pg_class WHERE relname LIKE 'collate_test%_idx%' ORDER BY 1;
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-- foreign keys
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-- force indexes and mergejoins to be used for FK checking queries,
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-- else they might not exercise collation-dependent operators
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SET enable_seqscan TO 0;
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SET enable_hashjoin TO 0;
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SET enable_nestloop TO 0;
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CREATE TABLE collate_test20 (f1 text COLLATE "C" PRIMARY KEY);
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INSERT INTO collate_test20 VALUES ('foo'), ('bar');
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CREATE TABLE collate_test21 (f2 text COLLATE "POSIX" REFERENCES collate_test20);
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INSERT INTO collate_test21 VALUES ('foo'), ('bar');
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INSERT INTO collate_test21 VALUES ('baz'); -- fail
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CREATE TABLE collate_test22 (f2 text COLLATE "POSIX");
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INSERT INTO collate_test22 VALUES ('foo'), ('bar'), ('baz');
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ALTER TABLE collate_test22 ADD FOREIGN KEY (f2) REFERENCES collate_test20; -- fail
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DELETE FROM collate_test22 WHERE f2 = 'baz';
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ALTER TABLE collate_test22 ADD FOREIGN KEY (f2) REFERENCES collate_test20;
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RESET enable_seqscan;
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RESET enable_hashjoin;
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RESET enable_nestloop;
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-- EXPLAIN
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EXPLAIN (COSTS OFF)
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SELECT * FROM collate_test10 ORDER BY x, y;
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EXPLAIN (COSTS OFF)
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SELECT * FROM collate_test10 ORDER BY x DESC, y COLLATE "C" ASC NULLS FIRST;
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-- CREATE/DROP COLLATION
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CREATE COLLATION mycoll1 FROM "C";
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CREATE COLLATION mycoll2 ( LC_COLLATE = "POSIX", LC_CTYPE = "POSIX" );
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CREATE COLLATION mycoll3 FROM "default"; -- intentionally unsupported
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DROP COLLATION mycoll1;
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CREATE TABLE collate_test23 (f1 text collate mycoll2);
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DROP COLLATION mycoll2; -- fail
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-- invalid: non-lowercase quoted identifiers
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CREATE COLLATION case_coll ("Lc_Collate" = "POSIX", "Lc_Ctype" = "POSIX");
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-- 9.1 bug with useless COLLATE in an expression subject to length coercion
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CREATE TEMP TABLE vctable (f1 varchar(25));
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INSERT INTO vctable VALUES ('foo' COLLATE "C");
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SELECT collation for ('foo'); -- unknown type - null
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SELECT collation for ('foo'::text);
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SELECT collation for ((SELECT a FROM collate_test1 LIMIT 1)); -- non-collatable type - error
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SELECT collation for ((SELECT b FROM collate_test1 LIMIT 1));
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--
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-- Clean up. Many of these table names will be re-used if the user is
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-- trying to run any platform-specific collation tests later, so we
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-- must get rid of them.
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--
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\set VERBOSITY terse
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DROP SCHEMA collate_tests CASCADE;
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