mysql 中的波兰语和德语重音字母

Question

我想在独特的专栏中存储抛光和德国标志。当我更改数据库时：

alter database osa character set utf8 collate utf8_general_ci;

我对德语符号有疑问。

sql> insert into company(uuid, name) VALUE ("1","IDE")
[2016-11-27 10:37:35] 1 row affected in 13ms

sql> insert into company(uuid, name) VALUE ("2","IDĘ")
[2016-11-27 10:37:37] 1 row affected in 9ms

sql> insert into company(uuid, name) VALUE ("3","Schuring")
[2016-11-27 10:37:38] 1 row affected in 13ms

sql> insert into company(uuid, name) VALUE ("4","Schüring")
[2016-11-27 10:37:39] [23000][1062] Duplicate entry 'Schüring' for key 'UK_niu8sfil2gxywcru9ah3r4ec5'

我必须使用哪种整理？

编辑：

也不适用于 utf8_unicode_ci

Answer 1

将所有出现的 utf8_general_ci 替换为 utf8_unicode_ci。 utf8_general_ci 坏了，显然：What are the diffrences between utf8_general_ci and utf8_unicode_ci?

utf8_general_ci is a very simple — and on Unicode, very broken — collation, one that gives incorrect results on general Unicode text.

Answer 2

也许你应该试试 utf8mb4_unicode_ci ?

utf8 字符集无法存储所有 utf8 字符。

https://dev.mysql.com/doc/refman/5.5/en/charset-unicode-utf8mb4.html

Answer 3

alter database osa character set utf8mb4 COLLATE utf8mb4_bin;

适合我。 @Maciek Bryński 谢谢你的提示。

Answer 4

COLLATION中的_ci表示"character insensitive"。不幸的是，它也意味着 "accent insensitive"。因此，要使 E 和 Ę 得到不同的对待，您需要 _bin 归类——utf8_bin 或 utf8mb4_bin.

mb4需要Emoji和中文，加上一些晦涩的东西。

mysql 中的波兰语和德语重音字母

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