1/* 2 * This test is for ICU collations. 3 */ 4 5/* skip test if not UTF8 server encoding or no ICU collations installed */ 6SELECT getdatabaseencoding() <> 'UTF8' OR 7 (SELECT count(*) FROM pg_collation WHERE collprovider = 'i') = 0 8 AS skip_test \gset 9\if :skip_test 10\quit 11\endif 12 13SET client_encoding TO UTF8; 14 15CREATE SCHEMA collate_tests; 16SET search_path = collate_tests; 17 18 19CREATE TABLE collate_test1 ( 20 a int, 21 b text COLLATE "en-x-icu" NOT NULL 22); 23 24\d collate_test1 25 26CREATE TABLE collate_test_fail ( 27 a int, 28 b text COLLATE "ja_JP.eucjp-x-icu" 29); 30 31CREATE TABLE collate_test_fail ( 32 a int, 33 b text COLLATE "foo-x-icu" 34); 35 36CREATE TABLE collate_test_fail ( 37 a int COLLATE "en-x-icu", 38 b text 39); 40 41CREATE TABLE collate_test_like ( 42 LIKE collate_test1 43); 44 45\d collate_test_like 46 47CREATE TABLE collate_test2 ( 48 a int, 49 b text COLLATE "sv-x-icu" 50); 51 52CREATE TABLE collate_test3 ( 53 a int, 54 b text COLLATE "C" 55); 56 57INSERT INTO collate_test1 VALUES (1, 'abc'), (2, 'äbc'), (3, 'bbc'), (4, 'ABC'); 58INSERT INTO collate_test2 SELECT * FROM collate_test1; 59INSERT INTO collate_test3 SELECT * FROM collate_test1; 60 61SELECT * FROM collate_test1 WHERE b >= 'bbc'; 62SELECT * FROM collate_test2 WHERE b >= 'bbc'; 63SELECT * FROM collate_test3 WHERE b >= 'bbc'; 64SELECT * FROM collate_test3 WHERE b >= 'BBC'; 65 66SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc'; 67SELECT * FROM collate_test1 WHERE b >= 'bbc' COLLATE "C"; 68SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "C"; 69SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "en-x-icu"; 70 71 72CREATE DOMAIN testdomain_sv AS text COLLATE "sv-x-icu"; 73CREATE DOMAIN testdomain_i AS int COLLATE "sv-x-icu"; -- fails 74CREATE TABLE collate_test4 ( 75 a int, 76 b testdomain_sv 77); 78INSERT INTO collate_test4 SELECT * FROM collate_test1; 79SELECT a, b FROM collate_test4 ORDER BY b; 80 81CREATE TABLE collate_test5 ( 82 a int, 83 b testdomain_sv COLLATE "en-x-icu" 84); 85INSERT INTO collate_test5 SELECT * FROM collate_test1; 86SELECT a, b FROM collate_test5 ORDER BY b; 87 88 89SELECT a, b FROM collate_test1 ORDER BY b; 90SELECT a, b FROM collate_test2 ORDER BY b; 91SELECT a, b FROM collate_test3 ORDER BY b; 92 93SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C"; 94 95-- star expansion 96SELECT * FROM collate_test1 ORDER BY b; 97SELECT * FROM collate_test2 ORDER BY b; 98SELECT * FROM collate_test3 ORDER BY b; 99 100-- constant expression folding 101SELECT 'bbc' COLLATE "en-x-icu" > 'äbc' COLLATE "en-x-icu" AS "true"; 102SELECT 'bbc' COLLATE "sv-x-icu" > 'äbc' COLLATE "sv-x-icu" AS "false"; 103 104-- upper/lower 105 106CREATE TABLE collate_test10 ( 107 a int, 108 x text COLLATE "en-x-icu", 109 y text COLLATE "tr-x-icu" 110); 111 112INSERT INTO collate_test10 VALUES (1, 'hij', 'hij'), (2, 'HIJ', 'HIJ'); 113 114SELECT a, lower(x), lower(y), upper(x), upper(y), initcap(x), initcap(y) FROM collate_test10; 115SELECT a, lower(x COLLATE "C"), lower(y COLLATE "C") FROM collate_test10; 116 117SELECT a, x, y FROM collate_test10 ORDER BY lower(y), a; 118 119-- LIKE/ILIKE 120 121SELECT * FROM collate_test1 WHERE b LIKE 'abc'; 122SELECT * FROM collate_test1 WHERE b LIKE 'abc%'; 123SELECT * FROM collate_test1 WHERE b LIKE '%bc%'; 124SELECT * FROM collate_test1 WHERE b ILIKE 'abc'; 125SELECT * FROM collate_test1 WHERE b ILIKE 'abc%'; 126SELECT * FROM collate_test1 WHERE b ILIKE '%bc%'; 127 128SELECT 'Türkiye' COLLATE "en-x-icu" ILIKE '%KI%' AS "true"; 129SELECT 'Türkiye' COLLATE "tr-x-icu" ILIKE '%KI%' AS "false"; 130 131SELECT 'bıt' ILIKE 'BIT' COLLATE "en-x-icu" AS "false"; 132SELECT 'bıt' ILIKE 'BIT' COLLATE "tr-x-icu" AS "true"; 133 134-- The following actually exercises the selectivity estimation for ILIKE. 135SELECT relname FROM pg_class WHERE relname ILIKE 'abc%'; 136 137-- regular expressions 138 139SELECT * FROM collate_test1 WHERE b ~ '^abc$'; 140SELECT * FROM collate_test1 WHERE b ~ '^abc'; 141SELECT * FROM collate_test1 WHERE b ~ 'bc'; 142SELECT * FROM collate_test1 WHERE b ~* '^abc$'; 143SELECT * FROM collate_test1 WHERE b ~* '^abc'; 144SELECT * FROM collate_test1 WHERE b ~* 'bc'; 145 146CREATE TABLE collate_test6 ( 147 a int, 148 b text COLLATE "en-x-icu" 149); 150INSERT INTO collate_test6 VALUES (1, 'abc'), (2, 'ABC'), (3, '123'), (4, 'ab1'), 151 (5, 'a1!'), (6, 'a c'), (7, '!.;'), (8, ' '), 152 (9, 'äbç'), (10, 'ÄBÇ'); 153SELECT b, 154 b ~ '^[[:alpha:]]+$' AS is_alpha, 155 b ~ '^[[:upper:]]+$' AS is_upper, 156 b ~ '^[[:lower:]]+$' AS is_lower, 157 b ~ '^[[:digit:]]+$' AS is_digit, 158 b ~ '^[[:alnum:]]+$' AS is_alnum, 159 b ~ '^[[:graph:]]+$' AS is_graph, 160 b ~ '^[[:print:]]+$' AS is_print, 161 b ~ '^[[:punct:]]+$' AS is_punct, 162 b ~ '^[[:space:]]+$' AS is_space 163FROM collate_test6; 164 165SELECT 'Türkiye' COLLATE "en-x-icu" ~* 'KI' AS "true"; 166SELECT 'Türkiye' COLLATE "tr-x-icu" ~* 'KI' AS "true"; -- true with ICU 167 168SELECT 'bıt' ~* 'BIT' COLLATE "en-x-icu" AS "false"; 169SELECT 'bıt' ~* 'BIT' COLLATE "tr-x-icu" AS "false"; -- false with ICU 170 171-- The following actually exercises the selectivity estimation for ~*. 172SELECT relname FROM pg_class WHERE relname ~* '^abc'; 173 174 175/* not run by default because it requires tr_TR system locale 176-- to_char 177 178SET lc_time TO 'tr_TR'; 179SELECT to_char(date '2010-04-01', 'DD TMMON YYYY'); 180SELECT to_char(date '2010-04-01', 'DD TMMON YYYY' COLLATE "tr-x-icu"); 181*/ 182 183 184-- backwards parsing 185 186CREATE VIEW collview1 AS SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc'; 187CREATE VIEW collview2 AS SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C"; 188CREATE VIEW collview3 AS SELECT a, lower((x || x) COLLATE "C") FROM collate_test10; 189 190SELECT table_name, view_definition FROM information_schema.views 191 WHERE table_name LIKE 'collview%' ORDER BY 1; 192 193 194-- collation propagation in various expression types 195 196SELECT a, coalesce(b, 'foo') FROM collate_test1 ORDER BY 2; 197SELECT a, coalesce(b, 'foo') FROM collate_test2 ORDER BY 2; 198SELECT a, coalesce(b, 'foo') FROM collate_test3 ORDER BY 2; 199SELECT a, lower(coalesce(x, 'foo')), lower(coalesce(y, 'foo')) FROM collate_test10; 200 201SELECT a, b, greatest(b, 'CCC') FROM collate_test1 ORDER BY 3; 202SELECT a, b, greatest(b, 'CCC') FROM collate_test2 ORDER BY 3; 203SELECT a, b, greatest(b, 'CCC') FROM collate_test3 ORDER BY 3; 204SELECT a, x, y, lower(greatest(x, 'foo')), lower(greatest(y, 'foo')) FROM collate_test10; 205 206SELECT a, nullif(b, 'abc') FROM collate_test1 ORDER BY 2; 207SELECT a, nullif(b, 'abc') FROM collate_test2 ORDER BY 2; 208SELECT a, nullif(b, 'abc') FROM collate_test3 ORDER BY 2; 209SELECT a, lower(nullif(x, 'foo')), lower(nullif(y, 'foo')) FROM collate_test10; 210 211SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test1 ORDER BY 2; 212SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test2 ORDER BY 2; 213SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test3 ORDER BY 2; 214 215CREATE DOMAIN testdomain AS text; 216SELECT a, b::testdomain FROM collate_test1 ORDER BY 2; 217SELECT a, b::testdomain FROM collate_test2 ORDER BY 2; 218SELECT a, b::testdomain FROM collate_test3 ORDER BY 2; 219SELECT a, b::testdomain_sv FROM collate_test3 ORDER BY 2; 220SELECT a, lower(x::testdomain), lower(y::testdomain) FROM collate_test10; 221 222SELECT min(b), max(b) FROM collate_test1; 223SELECT min(b), max(b) FROM collate_test2; 224SELECT min(b), max(b) FROM collate_test3; 225 226SELECT array_agg(b ORDER BY b) FROM collate_test1; 227SELECT array_agg(b ORDER BY b) FROM collate_test2; 228SELECT array_agg(b ORDER BY b) FROM collate_test3; 229 230SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test1 ORDER BY 2; 231SELECT a, b FROM collate_test2 UNION SELECT a, b FROM collate_test2 ORDER BY 2; 232SELECT a, b FROM collate_test3 WHERE a < 4 INTERSECT SELECT a, b FROM collate_test3 WHERE a > 1 ORDER BY 2; 233SELECT a, b FROM collate_test3 EXCEPT SELECT a, b FROM collate_test3 WHERE a < 2 ORDER BY 2; 234 235SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3 ORDER BY 2; -- fail 236SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3; -- ok 237SELECT a, b FROM collate_test1 UNION SELECT a, b FROM collate_test3 ORDER BY 2; -- fail 238SELECT a, b COLLATE "C" FROM collate_test1 UNION SELECT a, b FROM collate_test3 ORDER BY 2; -- ok 239SELECT a, b FROM collate_test1 INTERSECT SELECT a, b FROM collate_test3 ORDER BY 2; -- fail 240SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM collate_test3 ORDER BY 2; -- fail 241 242CREATE TABLE test_u AS SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3; -- fail 243 244-- ideally this would be a parse-time error, but for now it must be run-time: 245select x < y from collate_test10; -- fail 246select x || y from collate_test10; -- ok, because || is not collation aware 247select x, y from collate_test10 order by x || y; -- not so ok 248 249-- collation mismatch between recursive and non-recursive term 250WITH RECURSIVE foo(x) AS 251 (SELECT x FROM (VALUES('a' COLLATE "en-x-icu"),('b')) t(x) 252 UNION ALL 253 SELECT (x || 'c') COLLATE "de-x-icu" FROM foo WHERE length(x) < 10) 254SELECT * FROM foo; 255 256 257-- casting 258 259SELECT CAST('42' AS text COLLATE "C"); 260 261SELECT a, CAST(b AS varchar) FROM collate_test1 ORDER BY 2; 262SELECT a, CAST(b AS varchar) FROM collate_test2 ORDER BY 2; 263SELECT a, CAST(b AS varchar) FROM collate_test3 ORDER BY 2; 264 265 266-- propagation of collation in SQL functions (inlined and non-inlined cases) 267-- and plpgsql functions too 268 269CREATE FUNCTION mylt (text, text) RETURNS boolean LANGUAGE sql 270 AS $$ select $1 < $2 $$; 271 272CREATE FUNCTION mylt_noninline (text, text) RETURNS boolean LANGUAGE sql 273 AS $$ select $1 < $2 limit 1 $$; 274 275CREATE FUNCTION mylt_plpgsql (text, text) RETURNS boolean LANGUAGE plpgsql 276 AS $$ begin return $1 < $2; end $$; 277 278SELECT a.b AS a, b.b AS b, a.b < b.b AS lt, 279 mylt(a.b, b.b), mylt_noninline(a.b, b.b), mylt_plpgsql(a.b, b.b) 280FROM collate_test1 a, collate_test1 b 281ORDER BY a.b, b.b; 282 283SELECT a.b AS a, b.b AS b, a.b < b.b COLLATE "C" AS lt, 284 mylt(a.b, b.b COLLATE "C"), mylt_noninline(a.b, b.b COLLATE "C"), 285 mylt_plpgsql(a.b, b.b COLLATE "C") 286FROM collate_test1 a, collate_test1 b 287ORDER BY a.b, b.b; 288 289 290-- collation override in plpgsql 291 292CREATE FUNCTION mylt2 (x text, y text) RETURNS boolean LANGUAGE plpgsql AS $$ 293declare 294 xx text := x; 295 yy text := y; 296begin 297 return xx < yy; 298end 299$$; 300 301SELECT mylt2('a', 'B' collate "en-x-icu") as t, mylt2('a', 'B' collate "C") as f; 302 303CREATE OR REPLACE FUNCTION 304 mylt2 (x text, y text) RETURNS boolean LANGUAGE plpgsql AS $$ 305declare 306 xx text COLLATE "POSIX" := x; 307 yy text := y; 308begin 309 return xx < yy; 310end 311$$; 312 313SELECT mylt2('a', 'B') as f; 314SELECT mylt2('a', 'B' collate "C") as fail; -- conflicting collations 315SELECT mylt2('a', 'B' collate "POSIX") as f; 316 317 318-- polymorphism 319 320SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test1)) ORDER BY 1; 321SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test2)) ORDER BY 1; 322SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test3)) ORDER BY 1; 323 324CREATE FUNCTION dup (anyelement) RETURNS anyelement 325 AS 'select $1' LANGUAGE sql; 326 327SELECT a, dup(b) FROM collate_test1 ORDER BY 2; 328SELECT a, dup(b) FROM collate_test2 ORDER BY 2; 329SELECT a, dup(b) FROM collate_test3 ORDER BY 2; 330 331 332-- indexes 333 334CREATE INDEX collate_test1_idx1 ON collate_test1 (b); 335CREATE INDEX collate_test1_idx2 ON collate_test1 (b COLLATE "C"); 336CREATE INDEX collate_test1_idx3 ON collate_test1 ((b COLLATE "C")); -- this is different grammatically 337CREATE INDEX collate_test1_idx4 ON collate_test1 (((b||'foo') COLLATE "POSIX")); 338 339CREATE INDEX collate_test1_idx5 ON collate_test1 (a COLLATE "C"); -- fail 340CREATE INDEX collate_test1_idx6 ON collate_test1 ((a COLLATE "C")); -- fail 341 342SELECT relname, pg_get_indexdef(oid) FROM pg_class WHERE relname LIKE 'collate_test%_idx%' ORDER BY 1; 343 344set enable_seqscan = off; 345explain (costs off) 346select * from collate_test1 where b ilike 'abc'; 347select * from collate_test1 where b ilike 'abc'; 348explain (costs off) 349select * from collate_test1 where b ilike 'ABC'; 350select * from collate_test1 where b ilike 'ABC'; 351reset enable_seqscan; 352 353 354-- schema manipulation commands 355 356CREATE ROLE regress_test_role; 357CREATE SCHEMA test_schema; 358 359-- We need to do this this way to cope with varying names for encodings: 360do $$ 361BEGIN 362 EXECUTE 'CREATE COLLATION test0 (provider = icu, locale = ' || 363 quote_literal(current_setting('lc_collate')) || ');'; 364END 365$$; 366CREATE COLLATION test0 FROM "C"; -- fail, duplicate name 367do $$ 368BEGIN 369 EXECUTE 'CREATE COLLATION test1 (provider = icu, lc_collate = ' || 370 quote_literal(current_setting('lc_collate')) || 371 ', lc_ctype = ' || 372 quote_literal(current_setting('lc_ctype')) || ');'; 373END 374$$; 375CREATE COLLATION test3 (provider = icu, lc_collate = 'en_US.utf8'); -- fail, need lc_ctype 376CREATE COLLATION testx (provider = icu, locale = 'nonsense'); /* never fails with ICU */ DROP COLLATION testx; 377 378CREATE COLLATION test4 FROM nonsense; 379CREATE COLLATION test5 FROM test0; 380 381SELECT collname FROM pg_collation WHERE collname LIKE 'test%' ORDER BY 1; 382 383ALTER COLLATION test1 RENAME TO test11; 384ALTER COLLATION test0 RENAME TO test11; -- fail 385ALTER COLLATION test1 RENAME TO test22; -- fail 386 387ALTER COLLATION test11 OWNER TO regress_test_role; 388ALTER COLLATION test11 OWNER TO nonsense; 389ALTER COLLATION test11 SET SCHEMA test_schema; 390 391COMMENT ON COLLATION test0 IS 'US English'; 392 393SELECT collname, nspname, obj_description(pg_collation.oid, 'pg_collation') 394 FROM pg_collation JOIN pg_namespace ON (collnamespace = pg_namespace.oid) 395 WHERE collname LIKE 'test%' 396 ORDER BY 1; 397 398DROP COLLATION test0, test_schema.test11, test5; 399DROP COLLATION test0; -- fail 400DROP COLLATION IF EXISTS test0; 401 402SELECT collname FROM pg_collation WHERE collname LIKE 'test%'; 403 404DROP SCHEMA test_schema; 405DROP ROLE regress_test_role; 406 407 408-- ALTER 409 410ALTER COLLATION "en-x-icu" REFRESH VERSION; 411 412 413-- dependencies 414 415CREATE COLLATION test0 FROM "C"; 416 417CREATE TABLE collate_dep_test1 (a int, b text COLLATE test0); 418CREATE DOMAIN collate_dep_dom1 AS text COLLATE test0; 419CREATE TYPE collate_dep_test2 AS (x int, y text COLLATE test0); 420CREATE VIEW collate_dep_test3 AS SELECT text 'foo' COLLATE test0 AS foo; 421CREATE TABLE collate_dep_test4t (a int, b text); 422CREATE INDEX collate_dep_test4i ON collate_dep_test4t (b COLLATE test0); 423 424DROP COLLATION test0 RESTRICT; -- fail 425DROP COLLATION test0 CASCADE; 426 427\d collate_dep_test1 428\d collate_dep_test2 429 430DROP TABLE collate_dep_test1, collate_dep_test4t; 431DROP TYPE collate_dep_test2; 432 433-- test range types and collations 434 435create type textrange_c as range(subtype=text, collation="C"); 436create type textrange_en_us as range(subtype=text, collation="en-x-icu"); 437 438select textrange_c('A','Z') @> 'b'::text; 439select textrange_en_us('A','Z') @> 'b'::text; 440 441drop type textrange_c; 442drop type textrange_en_us; 443 444 445-- test ICU collation customization 446 447-- test the attributes handled by icu_set_collation_attributes() 448 449CREATE COLLATION testcoll_ignore_accents (provider = icu, locale = '@colStrength=primary;colCaseLevel=yes'); 450SELECT 'aaá' > 'AAA' COLLATE "und-x-icu", 'aaá' < 'AAA' COLLATE testcoll_ignore_accents; 451 452CREATE COLLATION testcoll_backwards (provider = icu, locale = '@colBackwards=yes'); 453SELECT 'coté' < 'côte' COLLATE "und-x-icu", 'coté' > 'côte' COLLATE testcoll_backwards; 454 455CREATE COLLATION testcoll_lower_first (provider = icu, locale = '@colCaseFirst=lower'); 456CREATE COLLATION testcoll_upper_first (provider = icu, locale = '@colCaseFirst=upper'); 457SELECT 'aaa' < 'AAA' COLLATE testcoll_lower_first, 'aaa' > 'AAA' COLLATE testcoll_upper_first; 458 459CREATE COLLATION testcoll_shifted (provider = icu, locale = '@colAlternate=shifted'); 460SELECT 'de-luge' < 'deanza' COLLATE "und-x-icu", 'de-luge' > 'deanza' COLLATE testcoll_shifted; 461 462CREATE COLLATION testcoll_numeric (provider = icu, locale = '@colNumeric=yes'); 463SELECT 'A-21' > 'A-123' COLLATE "und-x-icu", 'A-21' < 'A-123' COLLATE testcoll_numeric; 464 465CREATE COLLATION testcoll_error1 (provider = icu, locale = '@colNumeric=lower'); 466 467-- test that attributes not handled by icu_set_collation_attributes() 468-- (handled by ucol_open() directly) also work 469CREATE COLLATION testcoll_de_phonebook (provider = icu, locale = 'de@collation=phonebook'); 470SELECT 'Goldmann' < 'Götz' COLLATE "de-x-icu", 'Goldmann' > 'Götz' COLLATE testcoll_de_phonebook; 471 472 473-- nondeterministic collations 474 475CREATE COLLATION ctest_det (provider = icu, locale = '', deterministic = true); 476CREATE COLLATION ctest_nondet (provider = icu, locale = '', deterministic = false); 477 478CREATE TABLE test6 (a int, b text); 479-- same string in different normal forms 480INSERT INTO test6 VALUES (1, U&'\00E4bc'); 481INSERT INTO test6 VALUES (2, U&'\0061\0308bc'); 482SELECT * FROM test6; 483SELECT * FROM test6 WHERE b = 'äbc' COLLATE ctest_det; 484SELECT * FROM test6 WHERE b = 'äbc' COLLATE ctest_nondet; 485 486-- same with arrays 487CREATE TABLE test6a (a int, b text[]); 488INSERT INTO test6a VALUES (1, ARRAY[U&'\00E4bc']); 489INSERT INTO test6a VALUES (2, ARRAY[U&'\0061\0308bc']); 490SELECT * FROM test6a; 491SELECT * FROM test6a WHERE b = ARRAY['äbc'] COLLATE ctest_det; 492SELECT * FROM test6a WHERE b = ARRAY['äbc'] COLLATE ctest_nondet; 493 494CREATE COLLATION case_sensitive (provider = icu, locale = ''); 495CREATE COLLATION case_insensitive (provider = icu, locale = '@colStrength=secondary', deterministic = false); 496 497SELECT 'abc' <= 'ABC' COLLATE case_sensitive, 'abc' >= 'ABC' COLLATE case_sensitive; 498SELECT 'abc' <= 'ABC' COLLATE case_insensitive, 'abc' >= 'ABC' COLLATE case_insensitive; 499 500CREATE TABLE test1cs (x text COLLATE case_sensitive); 501CREATE TABLE test2cs (x text COLLATE case_sensitive); 502CREATE TABLE test3cs (x text COLLATE case_sensitive); 503INSERT INTO test1cs VALUES ('abc'), ('def'), ('ghi'); 504INSERT INTO test2cs VALUES ('ABC'), ('ghi'); 505INSERT INTO test3cs VALUES ('abc'), ('ABC'), ('def'), ('ghi'); 506 507SELECT x FROM test3cs WHERE x = 'abc'; 508SELECT x FROM test3cs WHERE x <> 'abc'; 509SELECT x FROM test3cs WHERE x LIKE 'a%'; 510SELECT x FROM test3cs WHERE x ILIKE 'a%'; 511SELECT x FROM test3cs WHERE x SIMILAR TO 'a%'; 512SELECT x FROM test3cs WHERE x ~ 'a'; 513SELECT x FROM test1cs UNION SELECT x FROM test2cs ORDER BY x; 514SELECT x FROM test2cs UNION SELECT x FROM test1cs ORDER BY x; 515SELECT x FROM test1cs INTERSECT SELECT x FROM test2cs; 516SELECT x FROM test2cs INTERSECT SELECT x FROM test1cs; 517SELECT x FROM test1cs EXCEPT SELECT x FROM test2cs; 518SELECT x FROM test2cs EXCEPT SELECT x FROM test1cs; 519SELECT DISTINCT x FROM test3cs ORDER BY x; 520SELECT count(DISTINCT x) FROM test3cs; 521SELECT x, count(*) FROM test3cs GROUP BY x ORDER BY x; 522SELECT x, row_number() OVER (ORDER BY x), rank() OVER (ORDER BY x) FROM test3cs ORDER BY x; 523CREATE UNIQUE INDEX ON test1cs (x); -- ok 524INSERT INTO test1cs VALUES ('ABC'); -- ok 525CREATE UNIQUE INDEX ON test3cs (x); -- ok 526SELECT string_to_array('ABC,DEF,GHI' COLLATE case_sensitive, ',', 'abc'); 527SELECT string_to_array('ABCDEFGHI' COLLATE case_sensitive, NULL, 'b'); 528 529CREATE TABLE test1ci (x text COLLATE case_insensitive); 530CREATE TABLE test2ci (x text COLLATE case_insensitive); 531CREATE TABLE test3ci (x text COLLATE case_insensitive); 532CREATE INDEX ON test3ci (x text_pattern_ops); -- error 533INSERT INTO test1ci VALUES ('abc'), ('def'), ('ghi'); 534INSERT INTO test2ci VALUES ('ABC'), ('ghi'); 535INSERT INTO test3ci VALUES ('abc'), ('ABC'), ('def'), ('ghi'); 536 537SELECT x FROM test3ci WHERE x = 'abc'; 538SELECT x FROM test3ci WHERE x <> 'abc'; 539SELECT x FROM test3ci WHERE x LIKE 'a%'; 540SELECT x FROM test3ci WHERE x ILIKE 'a%'; 541SELECT x FROM test3ci WHERE x SIMILAR TO 'a%'; 542SELECT x FROM test3ci WHERE x ~ 'a'; 543SELECT x FROM test1ci UNION SELECT x FROM test2ci ORDER BY x; 544SELECT x FROM test2ci UNION SELECT x FROM test1ci ORDER BY x; 545SELECT x FROM test1ci INTERSECT SELECT x FROM test2ci ORDER BY x; 546SELECT x FROM test2ci INTERSECT SELECT x FROM test1ci ORDER BY x; 547SELECT x FROM test1ci EXCEPT SELECT x FROM test2ci; 548SELECT x FROM test2ci EXCEPT SELECT x FROM test1ci; 549SELECT DISTINCT x FROM test3ci ORDER BY x; 550SELECT count(DISTINCT x) FROM test3ci; 551SELECT x, count(*) FROM test3ci GROUP BY x ORDER BY x; 552SELECT x, row_number() OVER (ORDER BY x), rank() OVER (ORDER BY x) FROM test3ci ORDER BY x; 553CREATE UNIQUE INDEX ON test1ci (x); -- ok 554INSERT INTO test1ci VALUES ('ABC'); -- error 555CREATE UNIQUE INDEX ON test3ci (x); -- error 556SELECT string_to_array('ABC,DEF,GHI' COLLATE case_insensitive, ',', 'abc'); 557SELECT string_to_array('ABCDEFGHI' COLLATE case_insensitive, NULL, 'b'); 558 559-- bpchar 560CREATE TABLE test1bpci (x char(3) COLLATE case_insensitive); 561CREATE TABLE test2bpci (x char(3) COLLATE case_insensitive); 562CREATE TABLE test3bpci (x char(3) COLLATE case_insensitive); 563CREATE INDEX ON test3bpci (x bpchar_pattern_ops); -- error 564INSERT INTO test1bpci VALUES ('abc'), ('def'), ('ghi'); 565INSERT INTO test2bpci VALUES ('ABC'), ('ghi'); 566INSERT INTO test3bpci VALUES ('abc'), ('ABC'), ('def'), ('ghi'); 567 568SELECT x FROM test3bpci WHERE x = 'abc'; 569SELECT x FROM test3bpci WHERE x <> 'abc'; 570SELECT x FROM test3bpci WHERE x LIKE 'a%'; 571SELECT x FROM test3bpci WHERE x ILIKE 'a%'; 572SELECT x FROM test3bpci WHERE x SIMILAR TO 'a%'; 573SELECT x FROM test3bpci WHERE x ~ 'a'; 574SELECT x FROM test1bpci UNION SELECT x FROM test2bpci ORDER BY x; 575SELECT x FROM test2bpci UNION SELECT x FROM test1bpci ORDER BY x; 576SELECT x FROM test1bpci INTERSECT SELECT x FROM test2bpci ORDER BY x; 577SELECT x FROM test2bpci INTERSECT SELECT x FROM test1bpci ORDER BY x; 578SELECT x FROM test1bpci EXCEPT SELECT x FROM test2bpci; 579SELECT x FROM test2bpci EXCEPT SELECT x FROM test1bpci; 580SELECT DISTINCT x FROM test3bpci ORDER BY x; 581SELECT count(DISTINCT x) FROM test3bpci; 582SELECT x, count(*) FROM test3bpci GROUP BY x ORDER BY x; 583SELECT x, row_number() OVER (ORDER BY x), rank() OVER (ORDER BY x) FROM test3bpci ORDER BY x; 584CREATE UNIQUE INDEX ON test1bpci (x); -- ok 585INSERT INTO test1bpci VALUES ('ABC'); -- error 586CREATE UNIQUE INDEX ON test3bpci (x); -- error 587SELECT string_to_array('ABC,DEF,GHI'::char(11) COLLATE case_insensitive, ',', 'abc'); 588SELECT string_to_array('ABCDEFGHI'::char(9) COLLATE case_insensitive, NULL, 'b'); 589 590-- This tests the issue described in match_pattern_prefix(). In the 591-- absence of that check, the case_insensitive tests below would 592-- return no rows where they should logically return one. 593CREATE TABLE test4c (x text COLLATE "C"); 594INSERT INTO test4c VALUES ('abc'); 595CREATE INDEX ON test4c (x); 596SET enable_seqscan = off; 597SELECT x FROM test4c WHERE x LIKE 'ABC' COLLATE case_sensitive; -- ok, no rows 598SELECT x FROM test4c WHERE x LIKE 'ABC%' COLLATE case_sensitive; -- ok, no rows 599SELECT x FROM test4c WHERE x LIKE 'ABC' COLLATE case_insensitive; -- error 600SELECT x FROM test4c WHERE x LIKE 'ABC%' COLLATE case_insensitive; -- error 601RESET enable_seqscan; 602 603-- Unicode special case: different variants of Greek lower case sigma. 604-- A naive implementation like citext that just does lower(x) = 605-- lower(y) will do the wrong thing here, because lower('Σ') is 'σ' 606-- but upper('ς') is 'Σ'. 607SELECT 'ὀδυσσεύς' = 'ὈΔΥΣΣΕΎΣ' COLLATE case_sensitive; 608SELECT 'ὀδυσσεύς' = 'ὈΔΥΣΣΕΎΣ' COLLATE case_insensitive; 609 610-- name vs. text comparison operators 611SELECT relname FROM pg_class WHERE relname = 'PG_CLASS'::text COLLATE case_insensitive; 612SELECT relname FROM pg_class WHERE 'PG_CLASS'::text = relname COLLATE case_insensitive; 613 614SELECT typname FROM pg_type WHERE typname LIKE 'int_' AND typname <> 'INT2'::text 615 COLLATE case_insensitive ORDER BY typname; 616SELECT typname FROM pg_type WHERE typname LIKE 'int_' AND 'INT2'::text <> typname 617 COLLATE case_insensitive ORDER BY typname; 618 619-- test case adapted from subselect.sql 620CREATE TEMP TABLE outer_text (f1 text COLLATE case_insensitive, f2 text); 621INSERT INTO outer_text VALUES ('a', 'a'); 622INSERT INTO outer_text VALUES ('b', 'a'); 623INSERT INTO outer_text VALUES ('A', NULL); 624INSERT INTO outer_text VALUES ('B', NULL); 625 626CREATE TEMP TABLE inner_text (c1 text COLLATE case_insensitive, c2 text); 627INSERT INTO inner_text VALUES ('a', NULL); 628 629SELECT * FROM outer_text WHERE (f1, f2) NOT IN (SELECT * FROM inner_text); 630 631-- accents 632CREATE COLLATION ignore_accents (provider = icu, locale = '@colStrength=primary;colCaseLevel=yes', deterministic = false); 633 634CREATE TABLE test4 (a int, b text); 635INSERT INTO test4 VALUES (1, 'cote'), (2, 'côte'), (3, 'coté'), (4, 'côté'); 636SELECT * FROM test4 WHERE b = 'cote'; 637SELECT * FROM test4 WHERE b = 'cote' COLLATE ignore_accents; 638SELECT * FROM test4 WHERE b = 'Cote' COLLATE ignore_accents; -- still case-sensitive 639SELECT * FROM test4 WHERE b = 'Cote' COLLATE case_insensitive; 640 641-- foreign keys (should use collation of primary key) 642 643-- PK is case-sensitive, FK is case-insensitive 644CREATE TABLE test10pk (x text COLLATE case_sensitive PRIMARY KEY); 645INSERT INTO test10pk VALUES ('abc'), ('def'), ('ghi'); 646CREATE TABLE test10fk (x text COLLATE case_insensitive REFERENCES test10pk (x) ON UPDATE CASCADE ON DELETE CASCADE); 647INSERT INTO test10fk VALUES ('abc'); -- ok 648INSERT INTO test10fk VALUES ('ABC'); -- error 649INSERT INTO test10fk VALUES ('xyz'); -- error 650SELECT * FROM test10pk; 651SELECT * FROM test10fk; 652-- restrict update even though the values are "equal" in the FK table 653UPDATE test10fk SET x = 'ABC' WHERE x = 'abc'; -- error 654SELECT * FROM test10fk; 655DELETE FROM test10pk WHERE x = 'abc'; 656SELECT * FROM test10pk; 657SELECT * FROM test10fk; 658 659-- PK is case-insensitive, FK is case-sensitive 660CREATE TABLE test11pk (x text COLLATE case_insensitive PRIMARY KEY); 661INSERT INTO test11pk VALUES ('abc'), ('def'), ('ghi'); 662CREATE TABLE test11fk (x text COLLATE case_sensitive REFERENCES test11pk (x) ON UPDATE CASCADE ON DELETE CASCADE); 663INSERT INTO test11fk VALUES ('abc'); -- ok 664INSERT INTO test11fk VALUES ('ABC'); -- ok 665INSERT INTO test11fk VALUES ('xyz'); -- error 666SELECT * FROM test11pk; 667SELECT * FROM test11fk; 668-- cascade update even though the values are "equal" in the PK table 669UPDATE test11pk SET x = 'ABC' WHERE x = 'abc'; 670SELECT * FROM test11fk; 671DELETE FROM test11pk WHERE x = 'abc'; 672SELECT * FROM test11pk; 673SELECT * FROM test11fk; 674 675-- partitioning 676CREATE TABLE test20 (a int, b text COLLATE case_insensitive) PARTITION BY LIST (b); 677CREATE TABLE test20_1 PARTITION OF test20 FOR VALUES IN ('abc'); 678INSERT INTO test20 VALUES (1, 'abc'); 679INSERT INTO test20 VALUES (2, 'ABC'); 680SELECT * FROM test20_1; 681 682CREATE TABLE test21 (a int, b text COLLATE case_insensitive) PARTITION BY RANGE (b); 683CREATE TABLE test21_1 PARTITION OF test21 FOR VALUES FROM ('ABC') TO ('DEF'); 684INSERT INTO test21 VALUES (1, 'abc'); 685INSERT INTO test21 VALUES (2, 'ABC'); 686SELECT * FROM test21_1; 687 688CREATE TABLE test22 (a int, b text COLLATE case_sensitive) PARTITION BY HASH (b); 689CREATE TABLE test22_0 PARTITION OF test22 FOR VALUES WITH (MODULUS 2, REMAINDER 0); 690CREATE TABLE test22_1 PARTITION OF test22 FOR VALUES WITH (MODULUS 2, REMAINDER 1); 691INSERT INTO test22 VALUES (1, 'def'); 692INSERT INTO test22 VALUES (2, 'DEF'); 693-- they end up in different partitions 694SELECT (SELECT count(*) FROM test22_0) = (SELECT count(*) FROM test22_1); 695 696-- same with arrays 697CREATE TABLE test22a (a int, b text[] COLLATE case_sensitive) PARTITION BY HASH (b); 698CREATE TABLE test22a_0 PARTITION OF test22a FOR VALUES WITH (MODULUS 2, REMAINDER 0); 699CREATE TABLE test22a_1 PARTITION OF test22a FOR VALUES WITH (MODULUS 2, REMAINDER 1); 700INSERT INTO test22a VALUES (1, ARRAY['def']); 701INSERT INTO test22a VALUES (2, ARRAY['DEF']); 702-- they end up in different partitions 703SELECT (SELECT count(*) FROM test22a_0) = (SELECT count(*) FROM test22a_1); 704 705CREATE TABLE test23 (a int, b text COLLATE case_insensitive) PARTITION BY HASH (b); 706CREATE TABLE test23_0 PARTITION OF test23 FOR VALUES WITH (MODULUS 2, REMAINDER 0); 707CREATE TABLE test23_1 PARTITION OF test23 FOR VALUES WITH (MODULUS 2, REMAINDER 1); 708INSERT INTO test23 VALUES (1, 'def'); 709INSERT INTO test23 VALUES (2, 'DEF'); 710-- they end up in the same partition (but it's platform-dependent which one) 711SELECT (SELECT count(*) FROM test23_0) <> (SELECT count(*) FROM test23_1); 712 713-- same with arrays 714CREATE TABLE test23a (a int, b text[] COLLATE case_insensitive) PARTITION BY HASH (b); 715CREATE TABLE test23a_0 PARTITION OF test23a FOR VALUES WITH (MODULUS 2, REMAINDER 0); 716CREATE TABLE test23a_1 PARTITION OF test23a FOR VALUES WITH (MODULUS 2, REMAINDER 1); 717INSERT INTO test23a VALUES (1, ARRAY['def']); 718INSERT INTO test23a VALUES (2, ARRAY['DEF']); 719-- they end up in the same partition (but it's platform-dependent which one) 720SELECT (SELECT count(*) FROM test23a_0) <> (SELECT count(*) FROM test23a_1); 721 722CREATE TABLE test30 (a int, b char(3) COLLATE case_insensitive) PARTITION BY LIST (b); 723CREATE TABLE test30_1 PARTITION OF test30 FOR VALUES IN ('abc'); 724INSERT INTO test30 VALUES (1, 'abc'); 725INSERT INTO test30 VALUES (2, 'ABC'); 726SELECT * FROM test30_1; 727 728CREATE TABLE test31 (a int, b char(3) COLLATE case_insensitive) PARTITION BY RANGE (b); 729CREATE TABLE test31_1 PARTITION OF test31 FOR VALUES FROM ('ABC') TO ('DEF'); 730INSERT INTO test31 VALUES (1, 'abc'); 731INSERT INTO test31 VALUES (2, 'ABC'); 732SELECT * FROM test31_1; 733 734CREATE TABLE test32 (a int, b char(3) COLLATE case_sensitive) PARTITION BY HASH (b); 735CREATE TABLE test32_0 PARTITION OF test32 FOR VALUES WITH (MODULUS 2, REMAINDER 0); 736CREATE TABLE test32_1 PARTITION OF test32 FOR VALUES WITH (MODULUS 2, REMAINDER 1); 737INSERT INTO test32 VALUES (1, 'def'); 738INSERT INTO test32 VALUES (2, 'DEF'); 739-- they end up in different partitions 740SELECT (SELECT count(*) FROM test32_0) = (SELECT count(*) FROM test32_1); 741 742CREATE TABLE test33 (a int, b char(3) COLLATE case_insensitive) PARTITION BY HASH (b); 743CREATE TABLE test33_0 PARTITION OF test33 FOR VALUES WITH (MODULUS 2, REMAINDER 0); 744CREATE TABLE test33_1 PARTITION OF test33 FOR VALUES WITH (MODULUS 2, REMAINDER 1); 745INSERT INTO test33 VALUES (1, 'def'); 746INSERT INTO test33 VALUES (2, 'DEF'); 747-- they end up in the same partition (but it's platform-dependent which one) 748SELECT (SELECT count(*) FROM test33_0) <> (SELECT count(*) FROM test33_1); 749 750 751-- cleanup 752RESET search_path; 753SET client_min_messages TO warning; 754DROP SCHEMA collate_tests CASCADE; 755RESET client_min_messages; 756 757-- leave a collation for pg_upgrade test 758CREATE COLLATION coll_icu_upgrade FROM "und-x-icu"; 759