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例如,ἐν或Ἐν是相同的,但应与ἕν/Ἓν区分开来。我尝试了utf8_bin,它似乎是最接近的,但也区分大小写。
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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