mysql 服务器连接排序规则 有什么用？

Question

mysql 服务器连接排序规则 有什么用？

Answer 1

utf8_unicode_ci and utf8_general_ci have no substantial difference between Chinese and English.
utf8_general_ci is fast in proofreading, but slightly less accurate. {GET}
utf8_unicode_ci has high accuracy, but the proofing speed is slightly slower.