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[英]is possible to have accent sensitive and case insensitive utf8 collation in mysql?
[英]MYSQL: best utf setting for ACCENT sensitive but CASE insensitive
例如,ἐν 或 Ἐν 相同,但應與 ἕν/Ἓν 區分開來。 我試過 utf8_bin ,它似乎是最接近的,但也區分大小寫。
mysql> select 'ἐν' = 'Ἐν' collate utf8mb4_0900_as_ci;
+----------------------------------------------+
| 'ἐν' = 'Ἐν' collate utf8mb4_0900_as_ci |
+----------------------------------------------+
| 1 |
+----------------------------------------------+
mysql> select 'ἐν' = 'ἕν' collate utf8mb4_0900_as_ci;
+----------------------------------------------+
| 'ἐν' = 'ἕν' collate utf8mb4_0900_as_ci |
+----------------------------------------------+
| 0 |
+----------------------------------------------+
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