How Can I Achieve Case-Sensitive Comparisons in MySQL Collations?

Case Sensitivity in MySQL Collation

It is common knowledge that MySQL collations end with "_ci," indicating case-insensitive comparisons. However, there may be scenarios where users require case-sensitive collation.

Solution:

According to the MySQL Manual: http://dev.mysql.com/doc/refman/5.0/en/charset-mysql.html

1. Utilize the "_cs" suffix to set case sensitivity in collation.
2. Obtain a list of "_cs" collations using the query:

SHOW COLLATION WHERE COLLATION LIKE "%_cs"

Additional Considerations for UTF-8:

Research indicates that there are no UTF-8 collations using "_cs" in MySQL. For UTF-8 fields with case sensitivity, it is recommended to use "utf8_bin."

Note:

"utf8_bin" can affect ORDER BY functionality. To mitigate this, use the following syntax:

ORDER BY column COLLATE utf8_general_ci

References:

• http://forums.mysql.com/read.php?103,19380,200971#msg-200971
• http://forums.mysql.com/read.php?103,156527,198794#msg-198794

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