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Diffstat (limited to 'src/test/regress/expected/collate.icu.utf8.out')
| -rw-r--r-- | src/test/regress/expected/collate.icu.utf8.out | 1961 |
1 files changed, 1961 insertions, 0 deletions
diff --git a/src/test/regress/expected/collate.icu.utf8.out b/src/test/regress/expected/collate.icu.utf8.out new file mode 100644 index 0000000..d4c8c6d --- /dev/null +++ b/src/test/regress/expected/collate.icu.utf8.out @@ -0,0 +1,1961 @@ +/* + * This test is for ICU collations. + */ +/* skip test if not UTF8 server encoding or no ICU collations installed */ +SELECT getdatabaseencoding() <> 'UTF8' OR + (SELECT count(*) FROM pg_collation WHERE collprovider = 'i') = 0 + AS skip_test \gset +\if :skip_test +\quit +\endif +SET client_encoding TO UTF8; +CREATE SCHEMA collate_tests; +SET search_path = collate_tests; +CREATE TABLE collate_test1 ( + a int, + b text COLLATE "en-x-icu" NOT NULL +); +\d collate_test1 + Table "collate_tests.collate_test1" + Column | Type | Collation | Nullable | Default +--------+---------+-----------+----------+--------- + a | integer | | | + b | text | en-x-icu | not null | + +CREATE TABLE collate_test_fail ( + a int, + b text COLLATE "ja_JP.eucjp-x-icu" +); +ERROR: collation "ja_JP.eucjp-x-icu" for encoding "UTF8" does not exist +LINE 3: b text COLLATE "ja_JP.eucjp-x-icu" + ^ +CREATE TABLE collate_test_fail ( + a int, + b text COLLATE "foo-x-icu" +); +ERROR: collation "foo-x-icu" for encoding "UTF8" does not exist +LINE 3: b text COLLATE "foo-x-icu" + ^ +CREATE TABLE collate_test_fail ( + a int COLLATE "en-x-icu", + b text +); +ERROR: collations are not supported by type integer +LINE 2: a int COLLATE "en-x-icu", + ^ +CREATE TABLE collate_test_like ( + LIKE collate_test1 +); +\d collate_test_like + Table "collate_tests.collate_test_like" + Column | Type | Collation | Nullable | Default +--------+---------+-----------+----------+--------- + a | integer | | | + b | text | en-x-icu | not null | + +CREATE TABLE collate_test2 ( + a int, + b text COLLATE "sv-x-icu" +); +CREATE TABLE collate_test3 ( + a int, + b text COLLATE "C" +); +INSERT INTO collate_test1 VALUES (1, 'abc'), (2, 'äbc'), (3, 'bbc'), (4, 'ABC'); +INSERT INTO collate_test2 SELECT * FROM collate_test1; +INSERT INTO collate_test3 SELECT * FROM collate_test1; +SELECT * FROM collate_test1 WHERE b >= 'bbc'; + a | b +---+----- + 3 | bbc +(1 row) + +SELECT * FROM collate_test2 WHERE b >= 'bbc'; + a | b +---+----- + 2 | äbc + 3 | bbc +(2 rows) + +SELECT * FROM collate_test3 WHERE b >= 'bbc'; + a | b +---+----- + 2 | äbc + 3 | bbc +(2 rows) + +SELECT * FROM collate_test3 WHERE b >= 'BBC'; + a | b +---+----- + 1 | abc + 2 | äbc + 3 | bbc +(3 rows) + +SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc'; + a | b +---+----- + 2 | äbc + 3 | bbc +(2 rows) + +SELECT * FROM collate_test1 WHERE b >= 'bbc' COLLATE "C"; + a | b +---+----- + 2 | äbc + 3 | bbc +(2 rows) + +SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "C"; + a | b +---+----- + 2 | äbc + 3 | bbc +(2 rows) + +SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "en-x-icu"; +ERROR: collation mismatch between explicit collations "C" and "en-x-icu" +LINE 1: ...* FROM collate_test1 WHERE b COLLATE "C" >= 'bbc' COLLATE "e... + ^ +CREATE DOMAIN testdomain_sv AS text COLLATE "sv-x-icu"; +CREATE DOMAIN testdomain_i AS int COLLATE "sv-x-icu"; -- fails +ERROR: collations are not supported by type integer +CREATE TABLE collate_test4 ( + a int, + b testdomain_sv +); +INSERT INTO collate_test4 SELECT * FROM collate_test1; +SELECT a, b FROM collate_test4 ORDER BY b; + a | b +---+----- + 1 | abc + 4 | ABC + 3 | bbc + 2 | äbc +(4 rows) + +CREATE TABLE collate_test5 ( + a int, + b testdomain_sv COLLATE "en-x-icu" +); +INSERT INTO collate_test5 SELECT * FROM collate_test1; +SELECT a, b FROM collate_test5 ORDER BY b; + a | b +---+----- + 1 | abc + 4 | ABC + 2 | äbc + 3 | bbc +(4 rows) + +SELECT a, b FROM collate_test1 ORDER BY b; + a | b +---+----- + 1 | abc + 4 | ABC + 2 | äbc + 3 | bbc +(4 rows) + +SELECT a, b FROM collate_test2 ORDER BY b; + a | b +---+----- + 1 | abc + 4 | ABC + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, b FROM collate_test3 ORDER BY b; + a | b +---+----- + 4 | ABC + 1 | abc + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C"; + a | b +---+----- + 4 | ABC + 1 | abc + 3 | bbc + 2 | äbc +(4 rows) + +-- star expansion +SELECT * FROM collate_test1 ORDER BY b; + a | b +---+----- + 1 | abc + 4 | ABC + 2 | äbc + 3 | bbc +(4 rows) + +SELECT * FROM collate_test2 ORDER BY b; + a | b +---+----- + 1 | abc + 4 | ABC + 3 | bbc + 2 | äbc +(4 rows) + +SELECT * FROM collate_test3 ORDER BY b; + a | b +---+----- + 4 | ABC + 1 | abc + 3 | bbc + 2 | äbc +(4 rows) + +-- constant expression folding +SELECT 'bbc' COLLATE "en-x-icu" > 'äbc' COLLATE "en-x-icu" AS "true"; + true +------ + t +(1 row) + +SELECT 'bbc' COLLATE "sv-x-icu" > 'äbc' COLLATE "sv-x-icu" AS "false"; + false +------- + f +(1 row) + +-- upper/lower +CREATE TABLE collate_test10 ( + a int, + x text COLLATE "en-x-icu", + y text COLLATE "tr-x-icu" +); +INSERT INTO collate_test10 VALUES (1, 'hij', 'hij'), (2, 'HIJ', 'HIJ'); +SELECT a, lower(x), lower(y), upper(x), upper(y), initcap(x), initcap(y) FROM collate_test10; + a | lower | lower | upper | upper | initcap | initcap +---+-------+-------+-------+-------+---------+--------- + 1 | hij | hij | HIJ | HİJ | Hij | Hij + 2 | hij | hıj | HIJ | HIJ | Hij | Hıj +(2 rows) + +SELECT a, lower(x COLLATE "C"), lower(y COLLATE "C") FROM collate_test10; + a | lower | lower +---+-------+------- + 1 | hij | hij + 2 | hij | hij +(2 rows) + +SELECT a, x, y FROM collate_test10 ORDER BY lower(y), a; + a | x | y +---+-----+----- + 2 | HIJ | HIJ + 1 | hij | hij +(2 rows) + +-- LIKE/ILIKE +SELECT * FROM collate_test1 WHERE b LIKE 'abc'; + a | b +---+----- + 1 | abc +(1 row) + +SELECT * FROM collate_test1 WHERE b LIKE 'abc%'; + a | b +---+----- + 1 | abc +(1 row) + +SELECT * FROM collate_test1 WHERE b LIKE '%bc%'; + a | b +---+----- + 1 | abc + 2 | äbc + 3 | bbc +(3 rows) + +SELECT * FROM collate_test1 WHERE b ILIKE 'abc'; + a | b +---+----- + 1 | abc + 4 | ABC +(2 rows) + +SELECT * FROM collate_test1 WHERE b ILIKE 'abc%'; + a | b +---+----- + 1 | abc + 4 | ABC +(2 rows) + +SELECT * FROM collate_test1 WHERE b ILIKE '%bc%'; + a | b +---+----- + 1 | abc + 2 | äbc + 3 | bbc + 4 | ABC +(4 rows) + +SELECT 'Türkiye' COLLATE "en-x-icu" ILIKE '%KI%' AS "true"; + true +------ + t +(1 row) + +SELECT 'Türkiye' COLLATE "tr-x-icu" ILIKE '%KI%' AS "false"; + false +------- + f +(1 row) + +SELECT 'bıt' ILIKE 'BIT' COLLATE "en-x-icu" AS "false"; + false +------- + f +(1 row) + +SELECT 'bıt' ILIKE 'BIT' COLLATE "tr-x-icu" AS "true"; + true +------ + t +(1 row) + +-- The following actually exercises the selectivity estimation for ILIKE. +SELECT relname FROM pg_class WHERE relname ILIKE 'abc%'; + relname +--------- +(0 rows) + +-- regular expressions +SELECT * FROM collate_test1 WHERE b ~ '^abc$'; + a | b +---+----- + 1 | abc +(1 row) + +SELECT * FROM collate_test1 WHERE b ~ '^abc'; + a | b +---+----- + 1 | abc +(1 row) + +SELECT * FROM collate_test1 WHERE b ~ 'bc'; + a | b +---+----- + 1 | abc + 2 | äbc + 3 | bbc +(3 rows) + +SELECT * FROM collate_test1 WHERE b ~* '^abc$'; + a | b +---+----- + 1 | abc + 4 | ABC +(2 rows) + +SELECT * FROM collate_test1 WHERE b ~* '^abc'; + a | b +---+----- + 1 | abc + 4 | ABC +(2 rows) + +SELECT * FROM collate_test1 WHERE b ~* 'bc'; + a | b +---+----- + 1 | abc + 2 | äbc + 3 | bbc + 4 | ABC +(4 rows) + +CREATE TABLE collate_test6 ( + a int, + b text COLLATE "en-x-icu" +); +INSERT INTO collate_test6 VALUES (1, 'abc'), (2, 'ABC'), (3, '123'), (4, 'ab1'), + (5, 'a1!'), (6, 'a c'), (7, '!.;'), (8, ' '), + (9, 'äbç'), (10, 'ÄBÇ'); +SELECT b, + b ~ '^[[:alpha:]]+$' AS is_alpha, + b ~ '^[[:upper:]]+$' AS is_upper, + b ~ '^[[:lower:]]+$' AS is_lower, + b ~ '^[[:digit:]]+$' AS is_digit, + b ~ '^[[:alnum:]]+$' AS is_alnum, + b ~ '^[[:graph:]]+$' AS is_graph, + b ~ '^[[:print:]]+$' AS is_print, + b ~ '^[[:punct:]]+$' AS is_punct, + b ~ '^[[:space:]]+$' AS is_space +FROM collate_test6; + b | is_alpha | is_upper | is_lower | is_digit | is_alnum | is_graph | is_print | is_punct | is_space +-----+----------+----------+----------+----------+----------+----------+----------+----------+---------- + abc | t | f | t | f | t | t | t | f | f + ABC | t | t | f | f | t | t | t | f | f + 123 | f | f | f | t | t | t | t | f | f + ab1 | f | f | f | f | t | t | t | f | f + a1! | f | f | f | f | f | t | t | f | f + a c | f | f | f | f | f | f | t | f | f + !.; | f | f | f | f | f | t | t | t | f + | f | f | f | f | f | f | t | f | t + äbç | t | f | t | f | t | t | t | f | f + ÄBÇ | t | t | f | f | t | t | t | f | f +(10 rows) + +SELECT 'Türkiye' COLLATE "en-x-icu" ~* 'KI' AS "true"; + true +------ + t +(1 row) + +SELECT 'Türkiye' COLLATE "tr-x-icu" ~* 'KI' AS "true"; -- true with ICU + true +------ + t +(1 row) + +SELECT 'bıt' ~* 'BIT' COLLATE "en-x-icu" AS "false"; + false +------- + f +(1 row) + +SELECT 'bıt' ~* 'BIT' COLLATE "tr-x-icu" AS "false"; -- false with ICU + false +------- + f +(1 row) + +-- The following actually exercises the selectivity estimation for ~*. +SELECT relname FROM pg_class WHERE relname ~* '^abc'; + relname +--------- +(0 rows) + +/* not run by default because it requires tr_TR system locale +-- to_char + +SET lc_time TO 'tr_TR'; +SELECT to_char(date '2010-04-01', 'DD TMMON YYYY'); +SELECT to_char(date '2010-04-01', 'DD TMMON YYYY' COLLATE "tr-x-icu"); +*/ +-- backwards parsing +CREATE VIEW collview1 AS SELECT * FROM collate_test1 WHERE b COLLATE "C" >= 'bbc'; +CREATE VIEW collview2 AS SELECT a, b FROM collate_test1 ORDER BY b COLLATE "C"; +CREATE VIEW collview3 AS SELECT a, lower((x || x) COLLATE "C") FROM collate_test10; +SELECT table_name, view_definition FROM information_schema.views + WHERE table_name LIKE 'collview%' ORDER BY 1; + table_name | view_definition +------------+-------------------------------------------------------------------------- + collview1 | SELECT collate_test1.a, + + | collate_test1.b + + | FROM collate_test1 + + | WHERE ((collate_test1.b COLLATE "C") >= 'bbc'::text); + collview2 | SELECT collate_test1.a, + + | collate_test1.b + + | FROM collate_test1 + + | ORDER BY (collate_test1.b COLLATE "C"); + collview3 | SELECT collate_test10.a, + + | lower(((collate_test10.x || collate_test10.x) COLLATE "C")) AS lower+ + | FROM collate_test10; +(3 rows) + +-- collation propagation in various expression types +SELECT a, coalesce(b, 'foo') FROM collate_test1 ORDER BY 2; + a | coalesce +---+---------- + 1 | abc + 4 | ABC + 2 | äbc + 3 | bbc +(4 rows) + +SELECT a, coalesce(b, 'foo') FROM collate_test2 ORDER BY 2; + a | coalesce +---+---------- + 1 | abc + 4 | ABC + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, coalesce(b, 'foo') FROM collate_test3 ORDER BY 2; + a | coalesce +---+---------- + 4 | ABC + 1 | abc + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, lower(coalesce(x, 'foo')), lower(coalesce(y, 'foo')) FROM collate_test10; + a | lower | lower +---+-------+------- + 1 | hij | hij + 2 | hij | hıj +(2 rows) + +SELECT a, b, greatest(b, 'CCC') FROM collate_test1 ORDER BY 3; + a | b | greatest +---+-----+---------- + 1 | abc | CCC + 2 | äbc | CCC + 3 | bbc | CCC + 4 | ABC | CCC +(4 rows) + +SELECT a, b, greatest(b, 'CCC') FROM collate_test2 ORDER BY 3; + a | b | greatest +---+-----+---------- + 1 | abc | CCC + 3 | bbc | CCC + 4 | ABC | CCC + 2 | äbc | äbc +(4 rows) + +SELECT a, b, greatest(b, 'CCC') FROM collate_test3 ORDER BY 3; + a | b | greatest +---+-----+---------- + 4 | ABC | CCC + 1 | abc | abc + 3 | bbc | bbc + 2 | äbc | äbc +(4 rows) + +SELECT a, x, y, lower(greatest(x, 'foo')), lower(greatest(y, 'foo')) FROM collate_test10; + a | x | y | lower | lower +---+-----+-----+-------+------- + 1 | hij | hij | hij | hij + 2 | HIJ | HIJ | hij | hıj +(2 rows) + +SELECT a, nullif(b, 'abc') FROM collate_test1 ORDER BY 2; + a | nullif +---+-------- + 4 | ABC + 2 | äbc + 3 | bbc + 1 | +(4 rows) + +SELECT a, nullif(b, 'abc') FROM collate_test2 ORDER BY 2; + a | nullif +---+-------- + 4 | ABC + 3 | bbc + 2 | äbc + 1 | +(4 rows) + +SELECT a, nullif(b, 'abc') FROM collate_test3 ORDER BY 2; + a | nullif +---+-------- + 4 | ABC + 3 | bbc + 2 | äbc + 1 | +(4 rows) + +SELECT a, lower(nullif(x, 'foo')), lower(nullif(y, 'foo')) FROM collate_test10; + a | lower | lower +---+-------+------- + 1 | hij | hij + 2 | hij | hıj +(2 rows) + +SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test1 ORDER BY 2; + a | b +---+------ + 4 | ABC + 2 | äbc + 1 | abcd + 3 | bbc +(4 rows) + +SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test2 ORDER BY 2; + a | b +---+------ + 4 | ABC + 1 | abcd + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, CASE b WHEN 'abc' THEN 'abcd' ELSE b END FROM collate_test3 ORDER BY 2; + a | b +---+------ + 4 | ABC + 1 | abcd + 3 | bbc + 2 | äbc +(4 rows) + +CREATE DOMAIN testdomain AS text; +SELECT a, b::testdomain FROM collate_test1 ORDER BY 2; + a | b +---+----- + 1 | abc + 4 | ABC + 2 | äbc + 3 | bbc +(4 rows) + +SELECT a, b::testdomain FROM collate_test2 ORDER BY 2; + a | b +---+----- + 1 | abc + 4 | ABC + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, b::testdomain FROM collate_test3 ORDER BY 2; + a | b +---+----- + 4 | ABC + 1 | abc + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, b::testdomain_sv FROM collate_test3 ORDER BY 2; + a | b +---+----- + 1 | abc + 4 | ABC + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, lower(x::testdomain), lower(y::testdomain) FROM collate_test10; + a | lower | lower +---+-------+------- + 1 | hij | hij + 2 | hij | hıj +(2 rows) + +SELECT min(b), max(b) FROM collate_test1; + min | max +-----+----- + abc | bbc +(1 row) + +SELECT min(b), max(b) FROM collate_test2; + min | max +-----+----- + abc | äbc +(1 row) + +SELECT min(b), max(b) FROM collate_test3; + min | max +-----+----- + ABC | äbc +(1 row) + +SELECT array_agg(b ORDER BY b) FROM collate_test1; + array_agg +------------------- + {abc,ABC,äbc,bbc} +(1 row) + +SELECT array_agg(b ORDER BY b) FROM collate_test2; + array_agg +------------------- + {abc,ABC,bbc,äbc} +(1 row) + +SELECT array_agg(b ORDER BY b) FROM collate_test3; + array_agg +------------------- + {ABC,abc,bbc,äbc} +(1 row) + +SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test1 ORDER BY 2; + a | b +---+----- + 1 | abc + 1 | abc + 4 | ABC + 4 | ABC + 2 | äbc + 2 | äbc + 3 | bbc + 3 | bbc +(8 rows) + +SELECT a, b FROM collate_test2 UNION SELECT a, b FROM collate_test2 ORDER BY 2; + a | b +---+----- + 1 | abc + 4 | ABC + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, b FROM collate_test3 WHERE a < 4 INTERSECT SELECT a, b FROM collate_test3 WHERE a > 1 ORDER BY 2; + a | b +---+----- + 3 | bbc + 2 | äbc +(2 rows) + +SELECT a, b FROM collate_test3 EXCEPT SELECT a, b FROM collate_test3 WHERE a < 2 ORDER BY 2; + a | b +---+----- + 4 | ABC + 3 | bbc + 2 | äbc +(3 rows) + +SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3 ORDER BY 2; -- fail +ERROR: could not determine which collation to use for string comparison +HINT: Use the COLLATE clause to set the collation explicitly. +SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3; -- ok + a | b +---+----- + 1 | abc + 2 | äbc + 3 | bbc + 4 | ABC + 1 | abc + 2 | äbc + 3 | bbc + 4 | ABC +(8 rows) + +SELECT a, b FROM collate_test1 UNION SELECT a, b FROM collate_test3 ORDER BY 2; -- fail +ERROR: collation mismatch between implicit collations "en-x-icu" and "C" +LINE 1: SELECT a, b FROM collate_test1 UNION SELECT a, b FROM collat... + ^ +HINT: You can choose the collation by applying the COLLATE clause to one or both expressions. +SELECT a, b COLLATE "C" FROM collate_test1 UNION SELECT a, b FROM collate_test3 ORDER BY 2; -- ok + a | b +---+----- + 4 | ABC + 1 | abc + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, b FROM collate_test1 INTERSECT SELECT a, b FROM collate_test3 ORDER BY 2; -- fail +ERROR: collation mismatch between implicit collations "en-x-icu" and "C" +LINE 1: ...ELECT a, b FROM collate_test1 INTERSECT SELECT a, b FROM col... + ^ +HINT: You can choose the collation by applying the COLLATE clause to one or both expressions. +SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM collate_test3 ORDER BY 2; -- fail +ERROR: collation mismatch between implicit collations "en-x-icu" and "C" +LINE 1: SELECT a, b FROM collate_test1 EXCEPT SELECT a, b FROM colla... + ^ +HINT: You can choose the collation by applying the COLLATE clause to one or both expressions. +CREATE TABLE test_u AS SELECT a, b FROM collate_test1 UNION ALL SELECT a, b FROM collate_test3; -- fail +ERROR: no collation was derived for column "b" with collatable type text +HINT: Use the COLLATE clause to set the collation explicitly. +-- ideally this would be a parse-time error, but for now it must be run-time: +select x < y from collate_test10; -- fail +ERROR: could not determine which collation to use for string comparison +HINT: Use the COLLATE clause to set the collation explicitly. +select x || y from collate_test10; -- ok, because || is not collation aware + ?column? +---------- + hijhij + HIJHIJ +(2 rows) + +select x, y from collate_test10 order by x || y; -- not so ok +ERROR: collation mismatch between implicit collations "en-x-icu" and "tr-x-icu" +LINE 1: select x, y from collate_test10 order by x || y; + ^ +HINT: You can choose the collation by applying the COLLATE clause to one or both expressions. +-- collation mismatch between recursive and non-recursive term +WITH RECURSIVE foo(x) AS + (SELECT x FROM (VALUES('a' COLLATE "en-x-icu"),('b')) t(x) + UNION ALL + SELECT (x || 'c') COLLATE "de-x-icu" FROM foo WHERE length(x) < 10) +SELECT * FROM foo; +ERROR: recursive query "foo" column 1 has collation "en-x-icu" in non-recursive term but collation "de-x-icu" overall +LINE 2: (SELECT x FROM (VALUES('a' COLLATE "en-x-icu"),('b')) t(x... + ^ +HINT: Use the COLLATE clause to set the collation of the non-recursive term. +-- casting +SELECT CAST('42' AS text COLLATE "C"); +ERROR: syntax error at or near "COLLATE" +LINE 1: SELECT CAST('42' AS text COLLATE "C"); + ^ +SELECT a, CAST(b AS varchar) FROM collate_test1 ORDER BY 2; + a | b +---+----- + 1 | abc + 4 | ABC + 2 | äbc + 3 | bbc +(4 rows) + +SELECT a, CAST(b AS varchar) FROM collate_test2 ORDER BY 2; + a | b +---+----- + 1 | abc + 4 | ABC + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, CAST(b AS varchar) FROM collate_test3 ORDER BY 2; + a | b +---+----- + 4 | ABC + 1 | abc + 3 | bbc + 2 | äbc +(4 rows) + +-- propagation of collation in SQL functions (inlined and non-inlined cases) +-- and plpgsql functions too +CREATE FUNCTION mylt (text, text) RETURNS boolean LANGUAGE sql + AS $$ select $1 < $2 $$; +CREATE FUNCTION mylt_noninline (text, text) RETURNS boolean LANGUAGE sql + AS $$ select $1 < $2 limit 1 $$; +CREATE FUNCTION mylt_plpgsql (text, text) RETURNS boolean LANGUAGE plpgsql + AS $$ begin return $1 < $2; end $$; +SELECT a.b AS a, b.b AS b, a.b < b.b AS lt, + mylt(a.b, b.b), mylt_noninline(a.b, b.b), mylt_plpgsql(a.b, b.b) +FROM collate_test1 a, collate_test1 b +ORDER BY a.b, b.b; + a | b | lt | mylt | mylt_noninline | mylt_plpgsql +-----+-----+----+------+----------------+-------------- + abc | abc | f | f | f | f + abc | ABC | t | t | t | t + abc | äbc | t | t | t | t + abc | bbc | t | t | t | t + ABC | abc | f | f | f | f + ABC | ABC | f | f | f | f + ABC | äbc | t | t | t | t + ABC | bbc | t | t | t | t + äbc | abc | f | f | f | f + äbc | ABC | f | f | f | f + äbc | äbc | f | f | f | f + äbc | bbc | t | t | t | t + bbc | abc | f | f | f | f + bbc | ABC | f | f | f | f + bbc | äbc | f | f | f | f + bbc | bbc | f | f | f | f +(16 rows) + +SELECT a.b AS a, b.b AS b, a.b < b.b COLLATE "C" AS lt, + mylt(a.b, b.b COLLATE "C"), mylt_noninline(a.b, b.b COLLATE "C"), + mylt_plpgsql(a.b, b.b COLLATE "C") +FROM collate_test1 a, collate_test1 b +ORDER BY a.b, b.b; + a | b | lt | mylt | mylt_noninline | mylt_plpgsql +-----+-----+----+------+----------------+-------------- + abc | abc | f | f | f | f + abc | ABC | f | f | f | f + abc | äbc | t | t | t | t + abc | bbc | t | t | t | t + ABC | abc | t | t | t | t + ABC | ABC | f | f | f | f + ABC | äbc | t | t | t | t + ABC | bbc | t | t | t | t + äbc | abc | f | f | f | f + äbc | ABC | f | f | f | f + äbc | äbc | f | f | f | f + äbc | bbc | f | f | f | f + bbc | abc | f | f | f | f + bbc | ABC | f | f | f | f + bbc | äbc | t | t | t | t + bbc | bbc | f | f | f | f +(16 rows) + +-- collation override in plpgsql +CREATE FUNCTION mylt2 (x text, y text) RETURNS boolean LANGUAGE plpgsql AS $$ +declare + xx text := x; + yy text := y; +begin + return xx < yy; +end +$$; +SELECT mylt2('a', 'B' collate "en-x-icu") as t, mylt2('a', 'B' collate "C") as f; + t | f +---+--- + t | f +(1 row) + +CREATE OR REPLACE FUNCTION + mylt2 (x text, y text) RETURNS boolean LANGUAGE plpgsql AS $$ +declare + xx text COLLATE "POSIX" := x; + yy text := y; +begin + return xx < yy; +end +$$; +SELECT mylt2('a', 'B') as f; + f +--- + f +(1 row) + +SELECT mylt2('a', 'B' collate "C") as fail; -- conflicting collations +ERROR: could not determine which collation to use for string comparison +HINT: Use the COLLATE clause to set the collation explicitly. +CONTEXT: PL/pgSQL function mylt2(text,text) line 6 at RETURN +SELECT mylt2('a', 'B' collate "POSIX") as f; + f +--- + f +(1 row) + +-- polymorphism +SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test1)) ORDER BY 1; + unnest +-------- + abc + ABC + äbc + bbc +(4 rows) + +SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test2)) ORDER BY 1; + unnest +-------- + abc + ABC + bbc + äbc +(4 rows) + +SELECT * FROM unnest((SELECT array_agg(b ORDER BY b) FROM collate_test3)) ORDER BY 1; + unnest +-------- + ABC + abc + bbc + äbc +(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 +---+----- + 1 | abc + 4 | ABC + 2 | äbc + 3 | bbc +(4 rows) + +SELECT a, dup(b) FROM collate_test2 ORDER BY 2; + a | dup +---+----- + 1 | abc + 4 | ABC + 3 | bbc + 2 | äbc +(4 rows) + +SELECT a, dup(b) FROM collate_test3 ORDER BY 2; + a | dup +---+----- + 4 | ABC + 1 | abc + 3 | bbc + 2 | äbc +(4 rows) + +-- indexes +CREATE INDEX collate_test1_idx1 ON collate_test1 (b); +CREATE INDEX collate_test1_idx2 ON collate_test1 (b COLLATE "C"); +CREATE INDEX collate_test1_idx3 ON collate_test1 ((b COLLATE "C")); -- 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 "C"); -- fail +ERROR: collations are not supported by type integer +CREATE INDEX collate_test1_idx6 ON collate_test1 ((a COLLATE "C")); -- fail +ERROR: collations are not supported by type integer +LINE 1: ...ATE INDEX collate_test1_idx6 ON collate_test1 ((a COLLATE "C... + ^ +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_tests.collate_test1 USING btree (b) + collate_test1_idx2 | CREATE INDEX collate_test1_idx2 ON collate_tests.collate_test1 USING btree (b COLLATE "C") + collate_test1_idx3 | CREATE INDEX collate_test1_idx3 ON collate_tests.collate_test1 USING btree (b COLLATE "C") + collate_test1_idx4 | CREATE INDEX collate_test1_idx4 ON collate_tests.collate_test1 USING btree (((b || 'foo'::text)) COLLATE "POSIX") +(4 rows) + +set enable_seqscan = off; +explain (costs off) +select * from collate_test1 where b ilike 'abc'; + QUERY PLAN +------------------------------- + Seq Scan on collate_test1 + Filter: (b ~~* 'abc'::text) +(2 rows) + +select * from collate_test1 where b ilike 'abc'; + a | b +---+----- + 1 | abc + 4 | ABC +(2 rows) + +explain (costs off) +select * from collate_test1 where b ilike 'ABC'; + QUERY PLAN +------------------------------- + Seq Scan on collate_test1 + Filter: (b ~~* 'ABC'::text) +(2 rows) + +select * from collate_test1 where b ilike 'ABC'; + a | b +---+----- + 1 | abc + 4 | ABC +(2 rows) + +reset enable_seqscan; +-- schema manipulation commands +CREATE ROLE regress_test_role; +CREATE SCHEMA test_schema; +-- We need to do this this way to cope with varying names for encodings: +do $$ +BEGIN + EXECUTE 'CREATE COLLATION test0 (provider = icu, locale = ' || + quote_literal(current_setting('lc_collate')) || ');'; +END +$$; +CREATE COLLATION test0 FROM "C"; -- fail, duplicate name +ERROR: collation "test0" already exists +do $$ +BEGIN + EXECUTE 'CREATE COLLATION test1 (provider = icu, locale = ' || + quote_literal(current_setting('lc_collate')) || ');'; +END +$$; +CREATE COLLATION test3 (provider = icu, lc_collate = 'en_US.utf8'); -- fail, needs "locale" +ERROR: parameter "locale" must be specified +CREATE COLLATION testx (provider = icu, locale = 'nonsense'); /* never fails with ICU */ DROP COLLATION testx; +CREATE COLLATION test4 FROM nonsense; +ERROR: collation "nonsense" for encoding "UTF8" does not exist +CREATE COLLATION test5 FROM test0; +SELECT collname FROM pg_collation WHERE collname LIKE 'test%' ORDER BY 1; + collname +---------- + test0 + test1 + test5 +(3 rows) + +ALTER COLLATION test1 RENAME TO test11; +ALTER COLLATION test0 RENAME TO test11; -- fail +ERROR: collation "test11" already exists in schema "collate_tests" +ALTER COLLATION test1 RENAME TO test22; -- fail +ERROR: collation "test1" for encoding "UTF8" does not exist +ALTER COLLATION test11 OWNER TO regress_test_role; +ALTER COLLATION test11 OWNER TO nonsense; +ERROR: role "nonsense" does not exist +ALTER COLLATION test11 SET SCHEMA test_schema; +COMMENT ON COLLATION test0 IS 'US English'; +SELECT collname, nspname, obj_description(pg_collation.oid, 'pg_collation') + FROM pg_collation JOIN pg_namespace ON (collnamespace = pg_namespace.oid) + WHERE collname LIKE 'test%' + ORDER BY 1; + collname | nspname | obj_description +----------+---------------+----------------- + test0 | collate_tests | US English + test11 | test_schema | + test5 | collate_tests | +(3 rows) + +DROP COLLATION test0, test_schema.test11, test5; +DROP COLLATION test0; -- fail +ERROR: collation "test0" for encoding "UTF8" does not exist +DROP COLLATION IF EXISTS test0; +NOTICE: collation "test0" does not exist, skipping +SELECT collname FROM pg_collation WHERE collname LIKE 'test%'; + collname +---------- +(0 rows) + +DROP SCHEMA test_schema; +DROP ROLE regress_test_role; +-- ALTER +ALTER COLLATION "en-x-icu" REFRESH VERSION; +NOTICE: version has not changed +-- also test for database while we are here +SELECT current_database() AS datname \gset +ALTER DATABASE :"datname" REFRESH COLLATION VERSION; +NOTICE: version has not changed +-- dependencies +CREATE COLLATION test0 FROM "C"; +CREATE TABLE collate_dep_test1 (a int, b text COLLATE test0); +CREATE DOMAIN collate_dep_dom1 AS text COLLATE test0; +CREATE TYPE collate_dep_test2 AS (x int, y text COLLATE test0); +CREATE VIEW collate_dep_test3 AS SELECT text 'foo' COLLATE test0 AS foo; +CREATE TABLE collate_dep_test4t (a int, b text); +CREATE INDEX collate_dep_test4i ON collate_dep_test4t (b COLLATE test0); +DROP COLLATION test0 RESTRICT; -- fail +ERROR: cannot drop collation test0 because other objects depend on it +DETAIL: column b of table collate_dep_test1 depends on collation test0 +type collate_dep_dom1 depends on collation test0 +column y of composite type collate_dep_test2 depends on collation test0 +view collate_dep_test3 depends on collation test0 +index collate_dep_test4i depends on collation test0 +HINT: Use DROP ... CASCADE to drop the dependent objects too. +DROP COLLATION test0 CASCADE; +NOTICE: drop cascades to 5 other objects +DETAIL: drop cascades to column b of table collate_dep_test1 +drop cascades to type collate_dep_dom1 +drop cascades to column y of composite type collate_dep_test2 +drop cascades to view collate_dep_test3 +drop cascades to index collate_dep_test4i +\d collate_dep_test1 + Table "collate_tests.collate_dep_test1" + Column | Type | Collation | Nullable | Default +--------+---------+-----------+----------+--------- + a | integer | | | + +\d collate_dep_test2 + Composite type "collate_tests.collate_dep_test2" + Column | Type | Collation | Nullable | Default +--------+---------+-----------+----------+--------- + x | integer | | | + +DROP TABLE collate_dep_test1, collate_dep_test4t; +DROP TYPE collate_dep_test2; +-- test range types and collations +create type textrange_c as range(subtype=text, collation="C"); +create type textrange_en_us as range(subtype=text, collation="en-x-icu"); +select textrange_c('A','Z') @> 'b'::text; + ?column? +---------- + f +(1 row) + +select textrange_en_us('A','Z') @> 'b'::text; + ?column? +---------- + t +(1 row) + +drop type textrange_c; +drop type textrange_en_us; +-- test ICU collation customization +-- test the attributes handled by icu_set_collation_attributes() +CREATE COLLATION testcoll_ignore_accents (provider = icu, locale = '@colStrength=primary;colCaseLevel=yes'); +SELECT 'aaá' > 'AAA' COLLATE "und-x-icu", 'aaá' < 'AAA' COLLATE testcoll_ignore_accents; + ?column? | ?column? +----------+---------- + t | t +(1 row) + +CREATE COLLATION testcoll_backwards (provider = icu, locale = '@colBackwards=yes'); +SELECT 'coté' < 'côte' COLLATE "und-x-icu", 'coté' > 'côte' COLLATE testcoll_backwards; + ?column? | ?column? +----------+---------- + t | t +(1 row) + +CREATE COLLATION testcoll_lower_first (provider = icu, locale = '@colCaseFirst=lower'); +CREATE COLLATION testcoll_upper_first (provider = icu, locale = '@colCaseFirst=upper'); +SELECT 'aaa' < 'AAA' COLLATE testcoll_lower_first, 'aaa' > 'AAA' COLLATE testcoll_upper_first; + ?column? | ?column? +----------+---------- + t | t +(1 row) + +CREATE COLLATION testcoll_shifted (provider = icu, locale = '@colAlternate=shifted'); +SELECT 'de-luge' < 'deanza' COLLATE "und-x-icu", 'de-luge' > 'deanza' COLLATE testcoll_shifted; + ?column? | ?column? +----------+---------- + t | t +(1 row) + +CREATE COLLATION testcoll_numeric (provider = icu, locale = '@colNumeric=yes'); +SELECT 'A-21' > 'A-123' COLLATE "und-x-icu", 'A-21' < 'A-123' COLLATE testcoll_numeric; + ?column? | ?column? +----------+---------- + t | t +(1 row) + +CREATE COLLATION testcoll_error1 (provider = icu, locale = '@colNumeric=lower'); +ERROR: could not open collator for locale "@colNumeric=lower": U_ILLEGAL_ARGUMENT_ERROR +-- test that attributes not handled by icu_set_collation_attributes() +-- (handled by ucol_open() directly) also work +CREATE COLLATION testcoll_de_phonebook (provider = icu, locale = 'de@collation=phonebook'); +SELECT 'Goldmann' < 'Götz' COLLATE "de-x-icu", 'Goldmann' > 'Götz' COLLATE testcoll_de_phonebook; + ?column? | ?column? +----------+---------- + t | t +(1 row) + +-- nondeterministic collations +CREATE COLLATION ctest_det (provider = icu, locale = '', deterministic = true); +CREATE COLLATION ctest_nondet (provider = icu, locale = '', deterministic = false); +CREATE TABLE test6 (a int, b text); +-- same string in different normal forms +INSERT INTO test6 VALUES (1, U&'\00E4bc'); +INSERT INTO test6 VALUES (2, U&'\0061\0308bc'); +SELECT * FROM test6; + a | b +---+----- + 1 | äbc + 2 | äbc +(2 rows) + +SELECT * FROM test6 WHERE b = 'äbc' COLLATE ctest_det; + a | b +---+----- + 1 | äbc +(1 row) + +SELECT * FROM test6 WHERE b = 'äbc' COLLATE ctest_nondet; + a | b +---+----- + 1 | äbc + 2 | äbc +(2 rows) + +-- same with arrays +CREATE TABLE test6a (a int, b text[]); +INSERT INTO test6a VALUES (1, ARRAY[U&'\00E4bc']); +INSERT INTO test6a VALUES (2, ARRAY[U&'\0061\0308bc']); +SELECT * FROM test6a; + a | b +---+------- + 1 | {äbc} + 2 | {äbc} +(2 rows) + +SELECT * FROM test6a WHERE b = ARRAY['äbc'] COLLATE ctest_det; + a | b +---+------- + 1 | {äbc} +(1 row) + +SELECT * FROM test6a WHERE b = ARRAY['äbc'] COLLATE ctest_nondet; + a | b +---+------- + 1 | {äbc} + 2 | {äbc} +(2 rows) + +CREATE COLLATION case_sensitive (provider = icu, locale = ''); +CREATE COLLATION case_insensitive (provider = icu, locale = '@colStrength=secondary', deterministic = false); +SELECT 'abc' <= 'ABC' COLLATE case_sensitive, 'abc' >= 'ABC' COLLATE case_sensitive; + ?column? | ?column? +----------+---------- + t | f +(1 row) + +SELECT 'abc' <= 'ABC' COLLATE case_insensitive, 'abc' >= 'ABC' COLLATE case_insensitive; + ?column? | ?column? +----------+---------- + t | t +(1 row) + +CREATE TABLE test1cs (x text COLLATE case_sensitive); +CREATE TABLE test2cs (x text COLLATE case_sensitive); +CREATE TABLE test3cs (x text COLLATE case_sensitive); +INSERT INTO test1cs VALUES ('abc'), ('def'), ('ghi'); +INSERT INTO test2cs VALUES ('ABC'), ('ghi'); +INSERT INTO test3cs VALUES ('abc'), ('ABC'), ('def'), ('ghi'); +SELECT x FROM test3cs WHERE x = 'abc'; + x +----- + abc +(1 row) + +SELECT x FROM test3cs WHERE x <> 'abc'; + x +----- + ABC + def + ghi +(3 rows) + +SELECT x FROM test3cs WHERE x LIKE 'a%'; + x +----- + abc +(1 row) + +SELECT x FROM test3cs WHERE x ILIKE 'a%'; + x +----- + abc + ABC +(2 rows) + +SELECT x FROM test3cs WHERE x SIMILAR TO 'a%'; + x +----- + abc +(1 row) + +SELECT x FROM test3cs WHERE x ~ 'a'; + x +----- + abc +(1 row) + +SELECT x FROM test1cs UNION SELECT x FROM test2cs ORDER BY x; + x +----- + abc + ABC + def + ghi +(4 rows) + +SELECT x FROM test2cs UNION SELECT x FROM test1cs ORDER BY x; + x +----- + abc + ABC + def + ghi +(4 rows) + +SELECT x FROM test1cs INTERSECT SELECT x FROM test2cs; + x +----- + ghi +(1 row) + +SELECT x FROM test2cs INTERSECT SELECT x FROM test1cs; + x +----- + ghi +(1 row) + +SELECT x FROM test1cs EXCEPT SELECT x FROM test2cs; + x +----- + abc + def +(2 rows) + +SELECT x FROM test2cs EXCEPT SELECT x FROM test1cs; + x +----- + ABC +(1 row) + +SELECT DISTINCT x FROM test3cs ORDER BY x; + x +----- + abc + ABC + def + ghi +(4 rows) + +SELECT count(DISTINCT x) FROM test3cs; + count +------- + 4 +(1 row) + +SELECT x, count(*) FROM test3cs GROUP BY x ORDER BY x; + x | count +-----+------- + abc | 1 + ABC | 1 + def | 1 + ghi | 1 +(4 rows) + +SELECT x, row_number() OVER (ORDER BY x), rank() OVER (ORDER BY x) FROM test3cs ORDER BY x; + x | row_number | rank +-----+------------+------ + abc | 1 | 1 + ABC | 2 | 2 + def | 3 | 3 + ghi | 4 | 4 +(4 rows) + +CREATE UNIQUE INDEX ON test1cs (x); -- ok +INSERT INTO test1cs VALUES ('ABC'); -- ok +CREATE UNIQUE INDEX ON test3cs (x); -- ok +SELECT string_to_array('ABC,DEF,GHI' COLLATE case_sensitive, ',', 'abc'); + string_to_array +----------------- + {ABC,DEF,GHI} +(1 row) + +SELECT string_to_array('ABCDEFGHI' COLLATE case_sensitive, NULL, 'b'); + string_to_array +--------------------- + {A,B,C,D,E,F,G,H,I} +(1 row) + +CREATE TABLE test1ci (x text COLLATE case_insensitive); +CREATE TABLE test2ci (x text COLLATE case_insensitive); +CREATE TABLE test3ci (x text COLLATE case_insensitive); +CREATE INDEX ON test3ci (x text_pattern_ops); -- error +ERROR: nondeterministic collations are not supported for operator class "text_pattern_ops" +INSERT INTO test1ci VALUES ('abc'), ('def'), ('ghi'); +INSERT INTO test2ci VALUES ('ABC'), ('ghi'); +INSERT INTO test3ci VALUES ('abc'), ('ABC'), ('def'), ('ghi'); +SELECT x FROM test3ci WHERE x = 'abc'; + x +----- + abc + ABC +(2 rows) + +SELECT x FROM test3ci WHERE x <> 'abc'; + x +----- + def + ghi +(2 rows) + +SELECT x FROM test3ci WHERE x LIKE 'a%'; +ERROR: nondeterministic collations are not supported for LIKE +SELECT x FROM test3ci WHERE x ILIKE 'a%'; +ERROR: nondeterministic collations are not supported for ILIKE +SELECT x FROM test3ci WHERE x SIMILAR TO 'a%'; +ERROR: nondeterministic collations are not supported for regular expressions +SELECT x FROM test3ci WHERE x ~ 'a'; +ERROR: nondeterministic collations are not supported for regular expressions +SELECT x FROM test1ci UNION SELECT x FROM test2ci ORDER BY x; + x +----- + abc + def + ghi +(3 rows) + +SELECT x FROM test2ci UNION SELECT x FROM test1ci ORDER BY x; + x +----- + ABC + def + ghi +(3 rows) + +SELECT x FROM test1ci INTERSECT SELECT x FROM test2ci ORDER BY x; + x +----- + abc + ghi +(2 rows) + +SELECT x FROM test2ci INTERSECT SELECT x FROM test1ci ORDER BY x; + x +----- + ABC + ghi +(2 rows) + +SELECT x FROM test1ci EXCEPT SELECT x FROM test2ci; + x +----- + def +(1 row) + +SELECT x FROM test2ci EXCEPT SELECT x FROM test1ci; + x +--- +(0 rows) + +SELECT DISTINCT x FROM test3ci ORDER BY x; + x +----- + abc + def + ghi +(3 rows) + +SELECT count(DISTINCT x) FROM test3ci; + count +------- + 3 +(1 row) + +SELECT x, count(*) FROM test3ci GROUP BY x ORDER BY x; + x | count +-----+------- + abc | 2 + def | 1 + ghi | 1 +(3 rows) + +SELECT x, row_number() OVER (ORDER BY x), rank() OVER (ORDER BY x) FROM test3ci ORDER BY x; + x | row_number | rank +-----+------------+------ + abc | 1 | 1 + ABC | 2 | 1 + def | 3 | 3 + ghi | 4 | 4 +(4 rows) + +CREATE UNIQUE INDEX ON test1ci (x); -- ok +INSERT INTO test1ci VALUES ('ABC'); -- error +ERROR: duplicate key value violates unique constraint "test1ci_x_idx" +DETAIL: Key (x)=(ABC) already exists. +CREATE UNIQUE INDEX ON test3ci (x); -- error +ERROR: could not create unique index "test3ci_x_idx" +DETAIL: Key (x)=(abc) is duplicated. +SELECT string_to_array('ABC,DEF,GHI' COLLATE case_insensitive, ',', 'abc'); +ERROR: nondeterministic collations are not supported for substring searches +SELECT string_to_array('ABCDEFGHI' COLLATE case_insensitive, NULL, 'b'); + string_to_array +------------------------ + {A,NULL,C,D,E,F,G,H,I} +(1 row) + +-- bpchar +CREATE TABLE test1bpci (x char(3) COLLATE case_insensitive); +CREATE TABLE test2bpci (x char(3) COLLATE case_insensitive); +CREATE TABLE test3bpci (x char(3) COLLATE case_insensitive); +CREATE INDEX ON test3bpci (x bpchar_pattern_ops); -- error +ERROR: nondeterministic collations are not supported for operator class "bpchar_pattern_ops" +INSERT INTO test1bpci VALUES ('abc'), ('def'), ('ghi'); +INSERT INTO test2bpci VALUES ('ABC'), ('ghi'); +INSERT INTO test3bpci VALUES ('abc'), ('ABC'), ('def'), ('ghi'); +SELECT x FROM test3bpci WHERE x = 'abc'; + x +----- + abc + ABC +(2 rows) + +SELECT x FROM test3bpci WHERE x <> 'abc'; + x +----- + def + ghi +(2 rows) + +SELECT x FROM test3bpci WHERE x LIKE 'a%'; +ERROR: nondeterministic collations are not supported for LIKE +SELECT x FROM test3bpci WHERE x ILIKE 'a%'; +ERROR: nondeterministic collations are not supported for ILIKE +SELECT x FROM test3bpci WHERE x SIMILAR TO 'a%'; +ERROR: nondeterministic collations are not supported for regular expressions +SELECT x FROM test3bpci WHERE x ~ 'a'; +ERROR: nondeterministic collations are not supported for regular expressions +SELECT x FROM test1bpci UNION SELECT x FROM test2bpci ORDER BY x; + x +----- + abc + def + ghi +(3 rows) + +SELECT x FROM test2bpci UNION SELECT x FROM test1bpci ORDER BY x; + x +----- + ABC + def + ghi +(3 rows) + +SELECT x FROM test1bpci INTERSECT SELECT x FROM test2bpci ORDER BY x; + x +----- + abc + ghi +(2 rows) + +SELECT x FROM test2bpci INTERSECT SELECT x FROM test1bpci ORDER BY x; + x +----- + ABC + ghi +(2 rows) + +SELECT x FROM test1bpci EXCEPT SELECT x FROM test2bpci; + x +----- + def +(1 row) + +SELECT x FROM test2bpci EXCEPT SELECT x FROM test1bpci; + x +--- +(0 rows) + +SELECT DISTINCT x FROM test3bpci ORDER BY x; + x +----- + abc + def + ghi +(3 rows) + +SELECT count(DISTINCT x) FROM test3bpci; + count +------- + 3 +(1 row) + +SELECT x, count(*) FROM test3bpci GROUP BY x ORDER BY x; + x | count +-----+------- + abc | 2 + def | 1 + ghi | 1 +(3 rows) + +SELECT x, row_number() OVER (ORDER BY x), rank() OVER (ORDER BY x) FROM test3bpci ORDER BY x; + x | row_number | rank +-----+------------+------ + abc | 1 | 1 + ABC | 2 | 1 + def | 3 | 3 + ghi | 4 | 4 +(4 rows) + +CREATE UNIQUE INDEX ON test1bpci (x); -- ok +INSERT INTO test1bpci VALUES ('ABC'); -- error +ERROR: duplicate key value violates unique constraint "test1bpci_x_idx" +DETAIL: Key (x)=(ABC) already exists. +CREATE UNIQUE INDEX ON test3bpci (x); -- error +ERROR: could not create unique index "test3bpci_x_idx" +DETAIL: Key (x)=(abc) is duplicated. +SELECT string_to_array('ABC,DEF,GHI'::char(11) COLLATE case_insensitive, ',', 'abc'); +ERROR: nondeterministic collations are not supported for substring searches +SELECT string_to_array('ABCDEFGHI'::char(9) COLLATE case_insensitive, NULL, 'b'); + string_to_array +------------------------ + {A,NULL,C,D,E,F,G,H,I} +(1 row) + +-- This tests the issue described in match_pattern_prefix(). In the +-- absence of that check, the case_insensitive tests below would +-- return no rows where they should logically return one. +CREATE TABLE test4c (x text COLLATE "C"); +INSERT INTO test4c VALUES ('abc'); +CREATE INDEX ON test4c (x); +SET enable_seqscan = off; +SELECT x FROM test4c WHERE x LIKE 'ABC' COLLATE case_sensitive; -- ok, no rows + x +--- +(0 rows) + +SELECT x FROM test4c WHERE x LIKE 'ABC%' COLLATE case_sensitive; -- ok, no rows + x +--- +(0 rows) + +SELECT x FROM test4c WHERE x LIKE 'ABC' COLLATE case_insensitive; -- error +ERROR: nondeterministic collations are not supported for LIKE +SELECT x FROM test4c WHERE x LIKE 'ABC%' COLLATE case_insensitive; -- error +ERROR: nondeterministic collations are not supported for LIKE +RESET enable_seqscan; +-- Unicode special case: different variants of Greek lower case sigma. +-- A naive implementation like citext that just does lower(x) = +-- lower(y) will do the wrong thing here, because lower('Σ') is 'σ' +-- but upper('ς') is 'Σ'. +SELECT 'ὀδυσσεύς' = 'ὈΔΥΣΣΕΎΣ' COLLATE case_sensitive; + ?column? +---------- + f +(1 row) + +SELECT 'ὀδυσσεύς' = 'ὈΔΥΣΣΕΎΣ' COLLATE case_insensitive; + ?column? +---------- + t +(1 row) + +-- name vs. text comparison operators +SELECT relname FROM pg_class WHERE relname = 'PG_CLASS'::text COLLATE case_insensitive; + relname +---------- + pg_class +(1 row) + +SELECT relname FROM pg_class WHERE 'PG_CLASS'::text = relname COLLATE case_insensitive; + relname +---------- + pg_class +(1 row) + +SELECT typname FROM pg_type WHERE typname LIKE 'int_' AND typname <> 'INT2'::text + COLLATE case_insensitive ORDER BY typname; + typname +--------- + int4 + int8 +(2 rows) + +SELECT typname FROM pg_type WHERE typname LIKE 'int_' AND 'INT2'::text <> typname + COLLATE case_insensitive ORDER BY typname; + typname +--------- + int4 + int8 +(2 rows) + +-- test case adapted from subselect.sql +CREATE TEMP TABLE outer_text (f1 text COLLATE case_insensitive, f2 text); +INSERT INTO outer_text VALUES ('a', 'a'); +INSERT INTO outer_text VALUES ('b', 'a'); +INSERT INTO outer_text VALUES ('A', NULL); +INSERT INTO outer_text VALUES ('B', NULL); +CREATE TEMP TABLE inner_text (c1 text COLLATE case_insensitive, c2 text); +INSERT INTO inner_text VALUES ('a', NULL); +SELECT * FROM outer_text WHERE (f1, f2) NOT IN (SELECT * FROM inner_text); + f1 | f2 +----+---- + b | a + B | +(2 rows) + +-- accents +CREATE COLLATION ignore_accents (provider = icu, locale = '@colStrength=primary;colCaseLevel=yes', deterministic = false); +CREATE TABLE test4 (a int, b text); +INSERT INTO test4 VALUES (1, 'cote'), (2, 'côte'), (3, 'coté'), (4, 'côté'); +SELECT * FROM test4 WHERE b = 'cote'; + a | b +---+------ + 1 | cote +(1 row) + +SELECT * FROM test4 WHERE b = 'cote' COLLATE ignore_accents; + a | b +---+------ + 1 | cote + 2 | côte + 3 | coté + 4 | côté +(4 rows) + +SELECT * FROM test4 WHERE b = 'Cote' COLLATE ignore_accents; -- still case-sensitive + a | b +---+--- +(0 rows) + +SELECT * FROM test4 WHERE b = 'Cote' COLLATE case_insensitive; + a | b +---+------ + 1 | cote +(1 row) + +-- foreign keys (should use collation of primary key) +-- PK is case-sensitive, FK is case-insensitive +CREATE TABLE test10pk (x text COLLATE case_sensitive PRIMARY KEY); +INSERT INTO test10pk VALUES ('abc'), ('def'), ('ghi'); +CREATE TABLE test10fk (x text COLLATE case_insensitive REFERENCES test10pk (x) ON UPDATE CASCADE ON DELETE CASCADE); +INSERT INTO test10fk VALUES ('abc'); -- ok +INSERT INTO test10fk VALUES ('ABC'); -- error +ERROR: insert or update on table "test10fk" violates foreign key constraint "test10fk_x_fkey" +DETAIL: Key (x)=(ABC) is not present in table "test10pk". +INSERT INTO test10fk VALUES ('xyz'); -- error +ERROR: insert or update on table "test10fk" violates foreign key constraint "test10fk_x_fkey" +DETAIL: Key (x)=(xyz) is not present in table "test10pk". +SELECT * FROM test10pk; + x +----- + abc + def + ghi +(3 rows) + +SELECT * FROM test10fk; + x +----- + abc +(1 row) + +-- restrict update even though the values are "equal" in the FK table +UPDATE test10fk SET x = 'ABC' WHERE x = 'abc'; -- error +ERROR: insert or update on table "test10fk" violates foreign key constraint "test10fk_x_fkey" +DETAIL: Key (x)=(ABC) is not present in table "test10pk". +SELECT * FROM test10fk; + x +----- + abc +(1 row) + +DELETE FROM test10pk WHERE x = 'abc'; +SELECT * FROM test10pk; + x +----- + def + ghi +(2 rows) + +SELECT * FROM test10fk; + x +--- +(0 rows) + +-- PK is case-insensitive, FK is case-sensitive +CREATE TABLE test11pk (x text COLLATE case_insensitive PRIMARY KEY); +INSERT INTO test11pk VALUES ('abc'), ('def'), ('ghi'); +CREATE TABLE test11fk (x text COLLATE case_sensitive REFERENCES test11pk (x) ON UPDATE CASCADE ON DELETE CASCADE); +INSERT INTO test11fk VALUES ('abc'); -- ok +INSERT INTO test11fk VALUES ('ABC'); -- ok +INSERT INTO test11fk VALUES ('xyz'); -- error +ERROR: insert or update on table "test11fk" violates foreign key constraint "test11fk_x_fkey" +DETAIL: Key (x)=(xyz) is not present in table "test11pk". +SELECT * FROM test11pk; + x +----- + abc + def + ghi +(3 rows) + +SELECT * FROM test11fk; + x +----- + abc + ABC +(2 rows) + +-- cascade update even though the values are "equal" in the PK table +UPDATE test11pk SET x = 'ABC' WHERE x = 'abc'; +SELECT * FROM test11fk; + x +----- + ABC + ABC +(2 rows) + +DELETE FROM test11pk WHERE x = 'abc'; +SELECT * FROM test11pk; + x +----- + def + ghi +(2 rows) + +SELECT * FROM test11fk; + x +--- +(0 rows) + +-- partitioning +CREATE TABLE test20 (a int, b text COLLATE case_insensitive) PARTITION BY LIST (b); +CREATE TABLE test20_1 PARTITION OF test20 FOR VALUES IN ('abc'); +INSERT INTO test20 VALUES (1, 'abc'); +INSERT INTO test20 VALUES (2, 'ABC'); +SELECT * FROM test20_1; + a | b +---+----- + 1 | abc + 2 | ABC +(2 rows) + +CREATE TABLE test21 (a int, b text COLLATE case_insensitive) PARTITION BY RANGE (b); +CREATE TABLE test21_1 PARTITION OF test21 FOR VALUES FROM ('ABC') TO ('DEF'); +INSERT INTO test21 VALUES (1, 'abc'); +INSERT INTO test21 VALUES (2, 'ABC'); +SELECT * FROM test21_1; + a | b +---+----- + 1 | abc + 2 | ABC +(2 rows) + +CREATE TABLE test22 (a int, b text COLLATE case_sensitive) PARTITION BY HASH (b); +CREATE TABLE test22_0 PARTITION OF test22 FOR VALUES WITH (MODULUS 2, REMAINDER 0); +CREATE TABLE test22_1 PARTITION OF test22 FOR VALUES WITH (MODULUS 2, REMAINDER 1); +INSERT INTO test22 VALUES (1, 'def'); +INSERT INTO test22 VALUES (2, 'DEF'); +-- they end up in different partitions +SELECT (SELECT count(*) FROM test22_0) = (SELECT count(*) FROM test22_1); + ?column? +---------- + t +(1 row) + +-- same with arrays +CREATE TABLE test22a (a int, b text[] COLLATE case_sensitive) PARTITION BY HASH (b); +CREATE TABLE test22a_0 PARTITION OF test22a FOR VALUES WITH (MODULUS 2, REMAINDER 0); +CREATE TABLE test22a_1 PARTITION OF test22a FOR VALUES WITH (MODULUS 2, REMAINDER 1); +INSERT INTO test22a VALUES (1, ARRAY['def']); +INSERT INTO test22a VALUES (2, ARRAY['DEF']); +-- they end up in different partitions +SELECT (SELECT count(*) FROM test22a_0) = (SELECT count(*) FROM test22a_1); + ?column? +---------- + t +(1 row) + +CREATE TABLE test23 (a int, b text COLLATE case_insensitive) PARTITION BY HASH (b); +CREATE TABLE test23_0 PARTITION OF test23 FOR VALUES WITH (MODULUS 2, REMAINDER 0); +CREATE TABLE test23_1 PARTITION OF test23 FOR VALUES WITH (MODULUS 2, REMAINDER 1); +INSERT INTO test23 VALUES (1, 'def'); +INSERT INTO test23 VALUES (2, 'DEF'); +-- they end up in the same partition (but it's platform-dependent which one) +SELECT (SELECT count(*) FROM test23_0) <> (SELECT count(*) FROM test23_1); + ?column? +---------- + t +(1 row) + +-- same with arrays +CREATE TABLE test23a (a int, b text[] COLLATE case_insensitive) PARTITION BY HASH (b); +CREATE TABLE test23a_0 PARTITION OF test23a FOR VALUES WITH (MODULUS 2, REMAINDER 0); +CREATE TABLE test23a_1 PARTITION OF test23a FOR VALUES WITH (MODULUS 2, REMAINDER 1); +INSERT INTO test23a VALUES (1, ARRAY['def']); +INSERT INTO test23a VALUES (2, ARRAY['DEF']); +-- they end up in the same partition (but it's platform-dependent which one) +SELECT (SELECT count(*) FROM test23a_0) <> (SELECT count(*) FROM test23a_1); + ?column? +---------- + t +(1 row) + +CREATE TABLE test30 (a int, b char(3) COLLATE case_insensitive) PARTITION BY LIST (b); +CREATE TABLE test30_1 PARTITION OF test30 FOR VALUES IN ('abc'); +INSERT INTO test30 VALUES (1, 'abc'); +INSERT INTO test30 VALUES (2, 'ABC'); +SELECT * FROM test30_1; + a | b +---+----- + 1 | abc + 2 | ABC +(2 rows) + +CREATE TABLE test31 (a int, b char(3) COLLATE case_insensitive) PARTITION BY RANGE (b); +CREATE TABLE test31_1 PARTITION OF test31 FOR VALUES FROM ('ABC') TO ('DEF'); +INSERT INTO test31 VALUES (1, 'abc'); +INSERT INTO test31 VALUES (2, 'ABC'); +SELECT * FROM test31_1; + a | b +---+----- + 1 | abc + 2 | ABC +(2 rows) + +CREATE TABLE test32 (a int, b char(3) COLLATE case_sensitive) PARTITION BY HASH (b); +CREATE TABLE test32_0 PARTITION OF test32 FOR VALUES WITH (MODULUS 2, REMAINDER 0); +CREATE TABLE test32_1 PARTITION OF test32 FOR VALUES WITH (MODULUS 2, REMAINDER 1); +INSERT INTO test32 VALUES (1, 'def'); +INSERT INTO test32 VALUES (2, 'DEF'); +-- they end up in different partitions +SELECT (SELECT count(*) FROM test32_0) = (SELECT count(*) FROM test32_1); + ?column? +---------- + t +(1 row) + +CREATE TABLE test33 (a int, b char(3) COLLATE case_insensitive) PARTITION BY HASH (b); +CREATE TABLE test33_0 PARTITION OF test33 FOR VALUES WITH (MODULUS 2, REMAINDER 0); +CREATE TABLE test33_1 PARTITION OF test33 FOR VALUES WITH (MODULUS 2, REMAINDER 1); +INSERT INTO test33 VALUES (1, 'def'); +INSERT INTO test33 VALUES (2, 'DEF'); +-- they end up in the same partition (but it's platform-dependent which one) +SELECT (SELECT count(*) FROM test33_0) <> (SELECT count(*) FROM test33_1); + ?column? +---------- + t +(1 row) + +-- cleanup +RESET search_path; +SET client_min_messages TO warning; +DROP SCHEMA collate_tests CASCADE; +RESET client_min_messages; +-- leave a collation for pg_upgrade test +CREATE COLLATION coll_icu_upgrade FROM "und-x-icu"; |