问题
EDIT: if no such collation exists, I can work around it if MySQL has a function which will convert strings into ASCII equivalents e.g. FUNC('Være')='Vaere' -- there might be several such functions, one for each alphabet, which would be a hassle but acceptable if effective.
I need a MySQL5 collation which will compare accented characters as equivalent, irrespective of accents. e.g. "fêter" should be considered equal to "feter" and "eł" should match "el"
Ideally this wouldn't be limited to single-character substitutions, e.g. "For At Være Som Man Bør" should be considered equal to "For At Vaere Som Man Bor". WHERE name LIKE '%ere%' should also match it.
I see there are collations for spanish/polish/etc, but I need one collation to cover all latin-like alphabets (not Arabic or Asian ones etc). The strings are stored as UTF-8.
Which collation should I use?
回答1:
Since you said you're using the utf8 characters set, the answer to your original question is "all of them except utf8_bin".
In all of these collations you will find that 'e' = 'ê'.
However, I don't know of any collations where 'æ' = 'ae' or 'ø' = 'o'.
utf8_czech_ci
utf8_danish_ci
utf8_esperanto_ci
utf8_estonian_ci
utf8_general_ci
utf8_hungarian_ci
utf8_icelandic_ci
utf8_latvian_ci
utf8_lithuanian_ci
utf8_persian_ci
utf8_polish_ci
utf8_roman_ci
utf8_romanian_ci
utf8_sinhala_ci
utf8_slovak_ci
utf8_slovenian_ci
utf8_spanish_ci
utf8_spanish2_ci
utf8_swedish_ci
utf8_turkish_ci
utf8_unicode_ci
回答2:
utf8-general-ci would be the closest one: http://www.collation-charts.org/mysql60/mysql604.utf8_general_ci.european.html
Also note that as of MySQL 5.0 you can create your own collations. http://dev.mysql.com/doc/refman/5.0/en/adding-collation.html http://forge.mysql.com/wiki/How_to_Add_a_Collation
来源：https://stackoverflow.com/questions/9518681/which-mysql-collation-compares-e-g-%c3%a9-and-e-as-equal