Oracle 5.0 Reference Manual page 817

To further illustrate, the following equalities hold in both
(for the effect this has in comparisons or when doing searches, see
Effect of Collation"):
Ä = A
Ö = O
Ü = U
A difference between the collations is that this is true for utf8_general_ci:
ß = s
Whereas this is true for utf8_unicode_ci, which supports the German DIN-1 ordering (also known
as dictionary order):
ß = ss
MySQL implements language-specific collations for the
utf8_unicode_ci
for German dictionary order and French, so there is no need to create special
utf8_general_ci
and not to "ss". If this is acceptable for your application, you should use
it is faster. Otherwise, use
xxx_swedish_ci
which is not something expected by a German or French speaker:
Ü = Y < Ö
The
xxx_spanish_ci
traditional Spanish, respectively. In both collations, "ñ" (n-tilde) is a separate letter between "n" and "o".
In addition, for traditional Spanish, "ch" is a separate letter between "c" and "d", and "ll" is a separate
letter between "l" and "m"
In the
xxx_roman_ci
For additional information about Unicode collations in MySQL, see Collation-Charts.Org (utf8).
10.1.13.2. West European Character Sets
Western European character sets cover most West European languages, such as French, Spanish,
Catalan, Basque, Portuguese, Italian, Albanian, Dutch, German, Danish, Swedish, Norwegian, Finnish,
Faroese, Icelandic, Irish, Scottish, and English.
• (US ASCII) collations:
ascii
•
ascii_bin
•
ascii_general_ci
• (DOS West European) collations:
cp850
•
cp850_bin
•
cp850_general_ci
• (DEC Western European) collations:
dec8
•
dec8_bin
•
dec8_swedish_ci
• (HP Western European) collations:
hp8
Character Sets and Collations That MySQL Supports
does not work well for a language. For example,
also is satisfactory for both German and French, except that "ß" is equal to "s",
utf8_unicode_ci
includes Swedish rules. For example, in Swedish, the following relationship holds,
and
xxx_spanish2_ci
collations, and compare as equal, and
I J
(default)
(default)
(default)
utf8_general_ci
character set only if the ordering with
utf8
because it is more accurate.
collations correspond to modern Spanish and
U
797
and
utf8_unicode_ci
Section 10.1.7.8, "Examples of the
utf8_unicode_ci
collations.
utf8
utf8_general_ci
and compare as equal.
V
works fine
because