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MySQL 8.0: ひらがなカタカナを判別する日本語用Collation
以前の記事では、MySQL 8.0.1で導入された新しい 日本語のutf8bm4のCollation(文字照合順)について ご紹介しました。このcollation (utf8mb4_ja_0900_as_cs) は、CLDR...

MySQL8.0: 日本語のutf8bm4のCollation(文字照合順)
MySQL 8.0.1では、utf8mb4の大文字小文字およびアクセント記号付きの文字を判別するas_cs...

Debian 9 and MySQL: Watch Out!
Debian logo by Software in the Public Interest, Inc. (CC-BY-SA) MySQL and Debian 9 “Stretch” Debian 9 (“Stretch”) was released on June 17, and we congratulate the Debian community on another iteration of a central Linux distro. Now, the Debian release team some time ago...

Protecting Data with Digital Signatures by Example using MySQL Enterprise Edition
Often databases contain data that needs to be proven as valid and authentic. We want to ensure that a known person or other sender (e.g. a trusted app) of the information can’t deny content, nor that the content can change without that person (senders) consent.…

MySQL 8.0: Kana-sensitive collation for Japanese
In my previous post, I wrote about the new Japanese collation for utf8mb4 introduced in MySQL 8.0.1! This collation (utf8mb4_ja_0900_as_cs) implements accent / case sensitivity for Japanese as defined by CLDR 30. Today, I am writing about our new utf8mb4_ja_0900_as_cs_ks collation which includes...

Debugging Character Set Issues by Example
In a world moving towards Unicode and UTF-8, a lot of applications still use some one-byte character set. And since one-byte characters usually accepts any byte in the range 0x00-0xFF it often works well to store and retrieve any data in such character strings, e.g.…

MySQL Documentation: Syntax Highlighting
MySQL documentation has greatly improved code examples now: There's syntax highlighting in place, and code snippets can easily be copied to the clipboard. Highlighting is language-aware (including "languages" like the shell/command line). See, for example, this page from the X DevAPI...

MySQL 8.0: New mysql-test-run option to minimize skipped tests in regression test runs
Anybody who has run the MySQL MTR test suite must have seen a statement like “x tests were skipped, y by the test itself. ” at the end of test runs. Why are some tests being skipped? Are the skipped tests affecting test coverage?…

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