2
* This test is intended to pass on all platforms supported by Postgres.
3
* We can therefore only assume that the default, C, and POSIX collations
4
* are available --- and since the regression tests are often run in a
5
* C-locale database, these may well all have the same behavior. But
6
* fortunately, the system doesn't know that and will treat them as
7
* incompatible collations. It is therefore at least possible to test
8
* parser behaviors such as collation conflict resolution. This test will,
9
* however, be more revealing when run in a database with non-C locale,
10
* since any departure from C sorting behavior will show as a failure.
13
CREATE SCHEMA collate_tests;
14
SET search_path = collate_tests;
16
CREATE TABLE collate_test1 (
18
b text COLLATE "C" NOT NULL
23
CREATE TABLE collate_test_fail (
28
CREATE TABLE collate_test_like (
34
CREATE TABLE collate_test2 (
36
b text COLLATE "POSIX"
39
INSERT INTO collate_test1 VALUES (1, 'abc'), (2, 'Abc'), (3, 'bbc'), (4, 'ABD');
40
INSERT INTO collate_test2 SELECT * FROM collate_test1;
42
SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'abc';
43
SELECT * FROM collate_test1 WHERE b >= 'abc' COLLATE "C";
44
SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'abc' COLLATE "C";
45
SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "POSIX"; -- fail
47
CREATE DOMAIN testdomain_p AS text COLLATE "POSIX";
48
CREATE DOMAIN testdomain_i AS int COLLATE "POSIX"; -- fail
49
CREATE TABLE collate_test4 (
53
INSERT INTO collate_test4 SELECT * FROM collate_test1;
54
SELECT a, b FROM collate_test4 ORDER BY b;
56
CREATE TABLE collate_test5 (
58
b testdomain_p COLLATE "C"
60
INSERT INTO collate_test5 SELECT * FROM collate_test1;
61
SELECT a, b FROM collate_test5 ORDER BY b;
64
SELECT a, b FROM collate_test1 ORDER BY b;
65
SELECT a, b FROM collate_test2 ORDER BY b;
67
SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C";
70
SELECT * FROM collate_test1 ORDER BY b;
71
SELECT * FROM collate_test2 ORDER BY b;
73
-- constant expression folding
74
SELECT 'bbc' COLLATE "C" > 'Abc' COLLATE "C" AS "true";
75
SELECT 'bbc' COLLATE "POSIX" < 'Abc' COLLATE "POSIX" AS "false";
79
CREATE TABLE collate_test10 (
82
y text COLLATE "POSIX"
85
INSERT INTO collate_test10 VALUES (1, 'hij', 'hij'), (2, 'HIJ', 'HIJ');
87
SELECT a, lower(x), lower(y), upper(x), upper(y), initcap(x), initcap(y) FROM collate_test10;
88
SELECT a, lower(x COLLATE "C"), lower(y COLLATE "C") FROM collate_test10;
90
SELECT a, x, y FROM collate_test10 ORDER BY lower(y), a;
94
CREATE VIEW collview1 AS SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc';
95
CREATE VIEW collview2 AS SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C";
96
CREATE VIEW collview3 AS SELECT a, lower((x || x) COLLATE "POSIX") FROM collate_test10;
98
SELECT table_name, view_definition FROM information_schema.views
99
WHERE table_name LIKE 'collview%' ORDER BY 1;
102
-- collation propagation in various expression type
104
SELECT a, coalesce(b, 'foo') FROM collate_test1 ORDER BY 2;
105
SELECT a, coalesce(b, 'foo') FROM collate_test2 ORDER BY 2;
106
SELECT a, lower(coalesce(x, 'foo')), lower(coalesce(y, 'foo')) FROM collate_test10;
108
SELECT a, b, greatest(b, 'CCC') FROM collate_test1 ORDER BY 3;
109
SELECT a, b, greatest(b, 'CCC') FROM collate_test2 ORDER BY 3;
110
SELECT a, x, y, lower(greatest(x, 'foo')), lower(greatest(y, 'foo')) FROM collate_test10;
112
SELECT a, nullif(b, 'abc') FROM collate_test1 ORDER BY 2;
113
SELECT a, nullif(b, 'abc') FROM collate_test2 ORDER BY 2;
114
SELECT a, lower(nullif(x, 'foo')), lower(nullif(y, 'foo')) FROM collate_test10;
116
SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test1 ORDER BY 2;
117
SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test2 ORDER BY 2;
119
CREATE DOMAIN testdomain AS text;
120
SELECT a, b::testdomain FROM collate_test1 ORDER BY 2;
121
SELECT a, b::testdomain FROM collate_test2 ORDER BY 2;
122
SELECT a, b::testdomain_p FROM collate_test2 ORDER BY 2;
123
SELECT a, lower(x::testdomain), lower(y::testdomain) FROM collate_test10;
125
SELECT min(b), max(b) FROM collate_test1;
126
SELECT min(b), max(b) FROM collate_test2;
128
SELECT array_agg(b ORDER BY b) FROM collate_test1;
129
SELECT array_agg(b ORDER BY b) FROM collate_test2;
131
SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test1 ORDER BY 2;
132
SELECT a, b FROM collate_test2 UNION SELECT a, b FROM collate_test2 ORDER BY 2;
133
SELECT a, b FROM collate_test2 WHERE a < 4 INTERSECT SELECT a, b FROM collate_test2 WHERE a > 1 ORDER BY 2;
134
SELECT a, b FROM collate_test2 EXCEPT SELECT a, b FROM collate_test2 WHERE a < 2 ORDER BY 2;
136
SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test2 ORDER BY 2; -- fail
137
SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test2; -- ok
138
SELECT a, b FROM collate_test1 UNION SELECT a, b FROM collate_test2 ORDER BY 2; -- fail
139
SELECT a, b COLLATE "C" FROM collate_test1 UNION SELECT a, b FROM collate_test2 ORDER BY 2; -- ok
140
SELECT a, b FROM collate_test1 INTERSECT SELECT a, b FROM collate_test2 ORDER BY 2; -- fail
141
SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM collate_test2 ORDER BY 2; -- fail
143
CREATE TABLE test_u AS SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test2; -- fail
145
-- ideally this would be a parse-time error, but for now it must be run-time:
146
select x < y from collate_test10; -- fail
147
select x || y from collate_test10; -- ok, because || is not collation aware
148
select x, y from collate_test10 order by x || y; -- not so ok
150
-- collation mismatch between recursive and non-recursive term
151
WITH RECURSIVE foo(x) AS
152
(SELECT x FROM (VALUES('a' COLLATE "C"),('b')) t(x)
154
SELECT (x || 'c') COLLATE "POSIX" FROM foo WHERE length(x) < 10)
157
SELECT a, b, a < b as lt FROM
158
(VALUES ('a', 'B'), ('A', 'b' COLLATE "C")) v(a,b);
163
SELECT CAST('42' AS text COLLATE "C");
165
SELECT a, CAST(b AS varchar) FROM collate_test1 ORDER BY 2;
166
SELECT a, CAST(b AS varchar) FROM collate_test2 ORDER BY 2;
171
SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test1)) ORDER BY 1;
172
SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test2)) ORDER BY 1;
174
CREATE FUNCTION dup (anyelement) RETURNS anyelement
175
AS 'select $1' LANGUAGE sql;
177
SELECT a, dup(b) FROM collate_test1 ORDER BY 2;
178
SELECT a, dup(b) FROM collate_test2 ORDER BY 2;
183
CREATE INDEX collate_test1_idx1 ON collate_test1 (b);
184
CREATE INDEX collate_test1_idx2 ON collate_test1 (b COLLATE "POSIX");
185
CREATE INDEX collate_test1_idx3 ON collate_test1 ((b COLLATE "POSIX")); -- this is different grammatically
186
CREATE INDEX collate_test1_idx4 ON collate_test1 (((b||'foo') COLLATE "POSIX"));
188
CREATE INDEX collate_test1_idx5 ON collate_test1 (a COLLATE "POSIX"); -- fail
189
CREATE INDEX collate_test1_idx6 ON collate_test1 ((a COLLATE "POSIX")); -- fail
191
SELECT relname, pg_get_indexdef(oid) FROM pg_class WHERE relname LIKE 'collate_test%_idx%' ORDER BY 1;
196
-- force indexes and mergejoins to be used for FK checking queries,
197
-- else they might not exercise collation-dependent operators
198
SET enable_seqscan TO 0;
199
SET enable_hashjoin TO 0;
200
SET enable_nestloop TO 0;
202
CREATE TABLE collate_test20 (f1 text COLLATE "C" PRIMARY KEY);
203
INSERT INTO collate_test20 VALUES ('foo'), ('bar');
204
CREATE TABLE collate_test21 (f2 text COLLATE "POSIX" REFERENCES collate_test20);
205
INSERT INTO collate_test21 VALUES ('foo'), ('bar');
206
INSERT INTO collate_test21 VALUES ('baz'); -- fail
207
CREATE TABLE collate_test22 (f2 text COLLATE "POSIX");
208
INSERT INTO collate_test22 VALUES ('foo'), ('bar'), ('baz');
209
ALTER TABLE collate_test22 ADD FOREIGN KEY (f2) REFERENCES collate_test20; -- fail
210
DELETE FROM collate_test22 WHERE f2 = 'baz';
211
ALTER TABLE collate_test22 ADD FOREIGN KEY (f2) REFERENCES collate_test20;
213
RESET enable_seqscan;
214
RESET enable_hashjoin;
215
RESET enable_nestloop;
218
-- Clean up. Many of these table names will be re-used if the user is
219
-- trying to run any platform-specific collation tests later, so we
220
-- must get rid of them.
222
DROP SCHEMA collate_tests CASCADE;