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