我是sql的新手,我安装了mysql,我跟着这本书:Java如何编程连接到mysql
我收到以下错误.关于时间戳..我理解原因..但我正在尝试修复"无法创建测试文件C:\ Program Files\MySQL\MySQL Server 5.6\data\Swati-HP.lower-test"
请引导我对此表示尊重
C:\Users\Swati>mysqld.exe
2013-10-15 13:57:01 0 [Warning] TIMESTAMP with implicit DEFAULT value is depreca
ted. Please use --explicit_defaults_for_timestamp server option (see documentati
on for more details).
2013-10-15 13:57:01 7492 [Warning] Can't create test file C:\Program Files\MySQL
\MySQL Server 5.6\data\Swati-HP.lower-test
2013-10-15 13:57:01 7492 [Warning] Can't create test file C:\Program Files\MySQL
\MySQL Server 5.6\data\Swati-HP.lower-test
2013-10-15 13:57:01 7492 [Note] Plugin 'FEDERATED' is disabled.
2013-10-15 13:57:01 7492 [Note] InnoDB: The InnoDB memory heap is disabled
2013-10-15 13:57:01 7492 [Note] …使用ID语句与proc比较中的BY语句有什么区别.
我理解ID语句 - 当添加的观察结果根据ID进行比较时..但是BY语句究竟做了什么..
我确实阅读了SAS文档并搜索了我无法理解的网络,任何人都可以详细说明.