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SELECT getdatabaseencoding() <> 'UTF8' AS skip_test \gset
\if :skip_test
\quit
\endif
SELECT U&'\0061\0308bc' <> U&'\00E4bc' COLLATE "C" AS sanity_check;
sanity_check
--------------
t
(1 row)
SELECT normalize('');
normalize
-----------
(1 row)
SELECT normalize(U&'\0061\0308\24D1c') = U&'\00E4\24D1c' COLLATE "C" AS test_default;
test_default
--------------
t
(1 row)
SELECT normalize(U&'\0061\0308\24D1c', NFC) = U&'\00E4\24D1c' COLLATE "C" AS test_nfc;
test_nfc
----------
t
(1 row)
SELECT normalize(U&'\00E4bc', NFC) = U&'\00E4bc' COLLATE "C" AS test_nfc_idem;
test_nfc_idem
---------------
t
(1 row)
SELECT normalize(U&'\00E4\24D1c', NFD) = U&'\0061\0308\24D1c' COLLATE "C" AS test_nfd;
test_nfd
----------
t
(1 row)
SELECT normalize(U&'\0061\0308\24D1c', NFKC) = U&'\00E4bc' COLLATE "C" AS test_nfkc;
test_nfkc
-----------
t
(1 row)
SELECT normalize(U&'\00E4\24D1c', NFKD) = U&'\0061\0308bc' COLLATE "C" AS test_nfkd;
test_nfkd
-----------
t
(1 row)
SELECT "normalize"('abc', 'def'); -- run-time error
ERROR: invalid normalization form: def
SELECT U&'\00E4\24D1c' IS NORMALIZED AS test_default;
test_default
--------------
t
(1 row)
SELECT U&'\00E4\24D1c' IS NFC NORMALIZED AS test_nfc;
test_nfc
----------
t
(1 row)
SELECT num, val,
val IS NFC NORMALIZED AS NFC,
val IS NFD NORMALIZED AS NFD,
val IS NFKC NORMALIZED AS NFKC,
val IS NFKD NORMALIZED AS NFKD
FROM
(VALUES (1, U&'\00E4bc'),
(2, U&'\0061\0308bc'),
(3, U&'\00E4\24D1c'),
(4, U&'\0061\0308\24D1c'),
(5, '')) vals (num, val)
ORDER BY num;
num | val | nfc | nfd | nfkc | nfkd
-----+-----+-----+-----+------+------
1 | äbc | t | f | t | f
2 | äbc | f | t | f | t
3 | äⓑc | t | f | f | f
4 | äⓑc | f | t | f | f
5 | | t | t | t | t
(5 rows)
SELECT is_normalized('abc', 'def'); -- run-time error
ERROR: invalid normalization form: def
|
