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MySQL 中区分大小写的排序规则

[英]Case Sensitive collation in MySQL

原文 2010-12-29 23:14:48 0 3 mysql/ database

Is there any Collation type in MySQL which supports Case Sensitive. MySQL 中是否有任何支持区分大小写的排序规则类型。 I had all type of collation in MySQL they all have _ci at the end of their name so they are case Insensitive collation.我在 MySQL 中有所有类型的排序规则，它们的名称末尾都有 _ci，因此它们是不区分大小写的排序规则。

3 个解决方案

According to MySQL Manual http://dev.mysql.com/doc/refman/5.0/en/charset-mysql.html you should be able to set collation to _cs for case sensitivity.根据 MySQL 手册http://dev.mysql.com/doc/refman/5.0/en/charset-mysql.html，您应该能够将排序_cs设置为_cs以区分大小写。 You can get a list of _cs collations by executing SHOW COLLATION WHERE COLLATION LIKE "%_cs" query您可以通过执行SHOW COLLATION WHERE COLLATION LIKE "%_cs"查询来获取_cs排序规则列表

After a little research:经过一番研究：

Apparently there are no utf8_*_cs in MySQL (yet).显然 MySQL 中没有utf8_*_cs （还）。 If you need case sensitive collation for utf8 fields, you should use utf8_bin .如果您需要 utf8 字段区分大小写的排序规则，您应该使用utf8_bin 。 This will mess up ORDER BY , but this can be fixed by ORDER BY column COLLATE utf8_general_ci这会弄乱ORDER BY ，但这可以通过ORDER BY column COLLATE utf8_general_ci修复

Source: http://forums.mysql.com/read.php?103,19380,200971#msg-200971 and http://forums.mysql.com/read.php?103,156527,198794#msg-198794来源： http : //forums.mysql.com/read.php?103,19380,200971#msg-200971和http://forums.mysql.com/read.php?103,156527,198794#msg-198794

尝试以_bin结尾的排序_bin ，例如latin1_bin或utf8_bin ，具体取决于您的字符集。

The new version of MySQL (8.0.1 and higher) comes (finally) with a set of utf8mb4_*_0900_as_cs collations. MySQL 的新版本（8.0.1 及更高版本）（最终）带有一组utf8mb4_*_0900_as_cs排序规则。

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