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UTF-8 is a variable-length encoding. In the case of UTF-8, this means that storing one code point requires one to four bytes. However, MySQL's encodin 阅读全文
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MySQL 时间函数 https://dev.mysql.com/doc/refman/8.0/en/date-and-time-functions.html mysql 日期数据类型 http://www.runoob.com/mysql/mysql-data-types.html 阅读全文
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you can not do "import x as y;" in Java. What you CAN do is to extend the class, or write a wrapper class for it, and import that one instead. 阅读全文
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MariaDB Server is available for installation on macOS (formerly Mac OS X) via the Homebrew package manager. MariaDB Server is available as a Homebrew 阅读全文
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格式化UTC为可读格式 MAC mbp:~ user_00$ date r 1546848158 2019年 1月 7日 星期一 16时02分38秒 CST linux [user_00@txyun ~]$ date d @1546848158 Mon Jan 7 16:02:38 CST 2019 阅读全文