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MYSQL 从哪里来？ 1.MYSQL 数据库是由瑞典公司MYSQL AB 公司研发，后被ORACLE 公司收购。 2.MYSQL 是开源关系型数据库，所以可以免费下载 3.MYSQL 有社区版和企业版 如 何启动MYSQL？ 1. 计算机->管理->启动MYSQL 2. 配置环境变量与用户变量 cmd->net start mysql 如何关闭MYSQL？ 1. 计算机->管理->关闭 MYSQL 2. Cmd->net stop mysql 如何进 入MYSQL？ 在命令行任意目录下输入 mysql -u+用户名 -p+密码名 如何退出MYSQL？ 1. quit 2. exit 3. \q 何为提示符？ 每个指令的默认字符串，默认初始字符串为 mysql> 提示符的作用：提示用户信息\u，当前所在数据库\d，当前日期\D,当前服务器名称\h，当前端口\p等等。 如何使用提示符 prompt？ 例子：mysql>prompt \u@\h \d> PROMPT set to ‘\u@\h \d>’ root@localhost(none)> (用户名@服务器名称（数据库名称）>） MYSQL常用命令 SELECT VESION(); 显示服务器版本 SELECT NOW(); 显示当前日期时间 SELECT USER(); 显示当前用户； MYSQL 语句的规范

I implemented a prompt path shortener for bash to be included in the PS1 environment variable, which shortens the working directory into something more compact but still descriptive. I'm curious what other ideas may exist. Here's the challenge: Create a bash function _dir_chomp which can be included into PS1 like this (line breaks inserted for readability): PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] $( _dir_chomp "$(pwd)" 20 )\[\033[01;37m\]$(parse_git_branch)\[\033[01;34m\] \$\[\033[00m\] ' with "20" being the parameter for the maximum length as soft limit. These are the examples: /usr/portage

As suggested here , latexmk is a handy way to continually compile your document whenever the source changes. But often when you're working on a document you'll end up with errors and then latex will panic and wait for user input before continuing. That can get very annoying, especially recently when I hacked up something to compile latex directly from an etherpad document, which saves continuously as you type. Is there a setting for latex or latexmk to make it just abort with an error message if it can't compile? Or, if necessary, how would I set up some kind of Expect script to auto-dismiss

I'm new to javascript, so that's my back story :) This code keeps crashing my browser, and it won't let me cancel the prompt if I don't cancel on the first attempt, whether I enter a number or not...Anyway, even the game won't work, which is to just to get to a point where the secret number is the person's guessing number. For cancelling the prompt, I even tried if(answer===null||answer===false||answer==="null") break; but it won't work. Can anybody help? Thanks. Here is my code: <script> var secret_number=Math.floor((Math.random() * 10) + 1); var answer=prompt("Enter a number you want to try"

I want to prompt the user to enter a sport (baseball, football, soccer, or track). Let's say I enter "Golf". How do I get it to keep asking me to enter a sport until I enter one of the valid sports? The sport determines what field they play on. Below is my code. var sport = prompt("What sport do you play? (Baseball, Football, Soccer, or Track)").toLowerCase (); switch (sport) { case "baseball": field = "Field 1"; break; case "football": field = "Field 2"; break; case "soccer": field = "Field 3"; break; case "track": field = "Field 4"; break; default: alert("Please enter a valid sport"); } loop

I'm using JavaScript's prompt() function. var favorite = prompt('What is your favorite color?', 'RED'); I'm using IE 7 and the prompt box that opens has a title bar that says : 'Explorer User Prompt' and further text that says 'Script Prompt:' Then beneath this is my text : 'What is your favorite color?' Also the 'OK' and 'Cancel' buttons appear in the far right side of the prompt box and the text entry box appears at the very bottom of the dialogue. Is there any way to change the title bar, remove the text 'Script Prompt', and put the OK and cancel buttons beneath the text entry box? No I don