MariaDB 10.3.2 发布，MySQL 分支版本

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MariaDB 10.3.2 已发布，这是 10.3 系列的第二个 Alpha 版本，不建议用于生产。

MariaDB 数据库管理系统是 MySQL 的一个分支，主要由开源社区在维护，采用 GPL 授权许可 MariaDB 的目的是完全兼容 MySQL，包括 API 和命令行。

更新内容：

Notable Changes

• Instant ADD COLUMN (MDEV-11369) – thanks to TenCent for the inspiration
• UPDATE statements with the same source and target (MDEV-12874) – from Jerome Brauge
• ORDER BY and LIMIT in multi-table update (MDEV-13911)
• DATE_FORMAT(date, format, locale) – 3 argument form of DATE_FORMAT (MDEV-11553)

Compression

• Storage-engine Independent Column Compression (MDEV-11371) – from TenCent

Encryption

• Temporary files created by merge sort and row log are encrypted if innodb_encrypt_log is set to 1, regardless of whether the table encrypted or not (MDEV-12634).

Variables

• Renamed idle_readwrite_transaction_timeout to idle_write_transaction_timeout.

The following deprecated variables have been removed:

• innodb_mtflush_threads
• innodb_use_mtflush

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