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HomeDatabaseMysql TutorialMySQL教程:相关的环境变量[图]_MySQL

所有使用mysqlclient客户库与服务器通信的MySQL客户使用下列环境变量:

MySQL教程:相关的环境变量[图]_MySQL 

  使用MYSQL_PWD是不安全的。见6.3 与MySQL服务器连接。

  “mysql”客户使用MYSQL_HISTFILE环境变量中命名的文件来保存命令行历史,历史文件的缺省值是“$HOME/.mysql_history”,这里$HOME是HOME环境变量的值。

  所有MySQL程序取许多不同的选项,然而,每个MySQL程序提供一个--help选项,你可以使用它得到程序不同选项的完整描述。例如,试一试mysql --help。

  你能用一个选项文件覆盖所有的标准客户程序的缺省选项。见4.15.4 选择文件。

  下表简单地描述MySQL程序:

  myisamchk

  描述、检查、优化和修复MySQL表的使用程序。因为myisamchk有许多功能,它在其自己的章节中描述。见13 维护MySQL安装。

  make_binary_release

  制作一个编译MySQL的一个二进制的版本。这能用FTP传送到在ftp.tcx.se网站的“/pub/mysql/Incoming”以方便其它MySQL用户。

  msql2mysql

  一个外壳脚本,转换mSQL程序到MySQL。它不能处理所有的情况,但是当转换时,它给出一个好起点。

  mysql

  mysql是一个简单的SQL外壳(具有GNU readline 能力),它支持交互式和非交互式使用。当交互地使用时,查询结果以ASCII表的格式被表示。当非交互地使用时(例如,作为一个过滤器),结果是以定位符分隔的格式表示。(输出格式可以使用命令行选项改变)你可以简单地象这样运行脚本:

  shell> mysql database output.tab

  如果你在客户中由于内存不足造成问题,使用--quick选项!这迫使mysql使用mysql_use_result()而非mysql_store_result()来检索结果集合。

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