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MySQL Engineering Blogs

InnoDB全文索引:N-gram Parser
InnoDB默认的全文索引parser非常合适于Latin,因为Latin是通过空格来分词的。但对于像中文,日文和韩文来说,没有这样的分隔符。一个词可以由多个字来组成,所以我们需要用不同的方式来处理。在MySQL...

MySQL Statement Digests
Decoupling Statement Digests From Performance Schema MySQL Statement Digests are a feature originally introduced as part of the MySQL Performance Schema in MySQL 5.6 to aggregate statement statistics based on the normalized statements executed within the server (for additional info, see...

MySQL Statement Digests: Configurable Max Lengths
MySQL Statement Digests are a feature originally introduced as part of the MySQL Performance Schema in MySQL 5.6 to aggregate statement statistics based on the normalized statements executed within the server (for additional info, see here). Digest calculations are done based on the tokens found in...

MySQL Performance Schema: Instrumentation Exceptions
The setup_actors table in MySQL Performance Schema can be used to specify what users and hosts one wants to have instrumentation enabled for. By default, connections from all users and hosts are instrumented: mysql> select * from performance_schema.setup_actors; +------+------+------+ | HOST |...

Renaming tables with MySQL Enterprise Backup 3.12.0
Introduction MySQL Enterprise Backup 3.12.0 (MEB) introduces a new feature for restoring an InnoDB table from a backup. Now it is possible to rename the table during restore. This is useful when the user wants to restore a table from a backup without overwriting the existing...

Distributing innodb tables made simpler!
With the support for cloud backups in MEB, distributing innodb tables across multiple MySQL instances has become easier.1. Backup - take a cloud(Amazon S3) backup of the tables to be shared using the --use-tts=with-full-locking option../mysqlbackup \--host=localhost --user=mysqluser --protocol=TCP...

InnoDB Full-Text: MeCab Parser
In addition to our general CJK support, as detailed in this blog post, we’ve also added a MeCab parser. MeCab is a Japanese morphological analyzer, and we now have a full-text plugin parser based on it! How Would I Use It? Set the mecab_rc_file option — mecab_rc_file is a read-only...

MySQL Enterprise Backup 3.12.0 has been released
MySQL Enterprise Backup team is excited to announce the new release of MySQL Enterprise Backup (MEB) 3.12.0.  MEB 3.12.0 focuses on enhancing the capabilities of the product that would be very useful to the database administrators. New functionality added • Support for Open...

InnoDB Full-Text : N-gram Parser
The default InnoDB full-text parser is ideal for latin based languages where whitespace is the token or word separator, but for languages like Chinese, Japanese, and Korean (CJK)—where there is no fixed separators for individual words, and each word can be compromised of multiple...

MySQL-5.7.6: Introducing Multi-source replication
On March 10, 2015, we released MySQL-5.7.6 and among many other things it includes multi-source replication which provides the ability for a MySQL slave server to replicate from more than one MySQL master. We have been very careful with multi-source replication in terms of what exactly our users...

MySQL Workbench 6.3.2 RC has been released
The MySQL developer tools team is pleased to announce 6.3.2 RC - the first release candidate for MySQL Workbench 6.3 For the full list of changes in this revision, visit http://dev.mysql.com/doc/relnotes/workbench/en/changes-6-3.html For detailed information about the new features, see...

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