2020-03-26 08:14:00 +01:00
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SELECT getdatabaseencoding() <> 'UTF8' AS skip_test \gset
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\if :skip_test
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\quit
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\endif
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SELECT U&'\0061\0308bc' <> U&'\00E4bc' COLLATE "C" AS sanity_check;
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sanity_check
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--------------
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t
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(1 row)
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2023-11-02 06:47:06 +01:00
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SELECT unicode_version() IS NOT NULL;
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?column?
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----------
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t
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(1 row)
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SELECT unicode_assigned(U&'abc');
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unicode_assigned
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------------------
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t
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(1 row)
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SELECT unicode_assigned(U&'abc\+10FFFF');
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unicode_assigned
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------------------
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f
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(1 row)
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2021-11-11 07:00:59 +01:00
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SELECT normalize('');
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normalize
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-----------
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(1 row)
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2020-03-26 08:14:00 +01:00
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SELECT normalize(U&'\0061\0308\24D1c') = U&'\00E4\24D1c' COLLATE "C" AS test_default;
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test_default
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--------------
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t
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(1 row)
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SELECT normalize(U&'\0061\0308\24D1c', NFC) = U&'\00E4\24D1c' COLLATE "C" AS test_nfc;
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test_nfc
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----------
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t
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(1 row)
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SELECT normalize(U&'\00E4bc', NFC) = U&'\00E4bc' COLLATE "C" AS test_nfc_idem;
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test_nfc_idem
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---------------
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t
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(1 row)
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SELECT normalize(U&'\00E4\24D1c', NFD) = U&'\0061\0308\24D1c' COLLATE "C" AS test_nfd;
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test_nfd
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----------
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t
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(1 row)
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SELECT normalize(U&'\0061\0308\24D1c', NFKC) = U&'\00E4bc' COLLATE "C" AS test_nfkc;
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test_nfkc
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-----------
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t
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(1 row)
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SELECT normalize(U&'\00E4\24D1c', NFKD) = U&'\0061\0308bc' COLLATE "C" AS test_nfkd;
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test_nfkd
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-----------
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t
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(1 row)
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SELECT "normalize"('abc', 'def'); -- run-time error
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ERROR: invalid normalization form: def
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SELECT U&'\00E4\24D1c' IS NORMALIZED AS test_default;
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test_default
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--------------
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t
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(1 row)
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SELECT U&'\00E4\24D1c' IS NFC NORMALIZED AS test_nfc;
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test_nfc
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----------
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t
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(1 row)
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SELECT num, val,
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val IS NFC NORMALIZED AS NFC,
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val IS NFD NORMALIZED AS NFD,
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val IS NFKC NORMALIZED AS NFKC,
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val IS NFKD NORMALIZED AS NFKD
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FROM
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(VALUES (1, U&'\00E4bc'),
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(2, U&'\0061\0308bc'),
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(3, U&'\00E4\24D1c'),
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2021-11-11 07:00:59 +01:00
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(4, U&'\0061\0308\24D1c'),
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(5, '')) vals (num, val)
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2020-03-26 08:14:00 +01:00
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ORDER BY num;
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num | val | nfc | nfd | nfkc | nfkd
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-----+-----+-----+-----+------+------
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1 | äbc | t | f | t | f
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2 | äbc | f | t | f | t
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3 | äⓑc | t | f | f | f
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4 | äⓑc | f | t | f | f
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2021-11-11 07:00:59 +01:00
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5 | | t | t | t | t
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(5 rows)
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2020-03-26 08:14:00 +01:00
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SELECT is_normalized('abc', 'def'); -- run-time error
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ERROR: invalid normalization form: def
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