3.1.1 显示存在的数据库：show databases; 3.1.4 判断当前使用的数据库：select database(); ①每行包含一个记录，②用定位符(tab)把值分开，并且以CREATE TABLE语句中列出...
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惟一知道的就是在浏览器上显示的内容不是想要的内容，或者想要保存在数据库中的内容根本没有保存。
You only know that what is being displayed to the browser isn't what you intended, or that what you thought was being stored in your database isn't being stored at all.
接着你会看到数据库中已经有一列表格或者看到一个界面显示不存在表格。这取决于你的设置。
You will then see either a list of tables already inside that database or a screen that says no tables exist. This depends on your setup.
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