在 MySQL 中创建简单数据库

Question

all, I'm new to using MySQL and I'm having some issues creating a simple database for uploading a basic ruby app. Can anybody help me with the format to use in the MySQL Command? I'm using MySQL 5.5.

I have searched online; however, all of the typical formats for creating a database seem to have no result at all on prompt - should I be seeing some sort of visual confirmation that a database was created? Thanks, all!

Answer 1

As a new user I would highly recommend trying out phpMyAdmin as an interface to MySQL. I know it's not ruby, but if you have php setup already anyways it's a very useful tool.

http://www.phpmyadmin.net/home_page/index.php

With this tool, you can create a database with the click of a single button, run SQL commands, create tables and set permissions.

Answer 2

Try doing DESCRIBE tablename where tablename is the name of a table you think you have created. That way you can check whether it was created or not.

Answer 3

The command for creating a database is CREATE DATABASE database_name; . Don't forget the semicolon at the end.

If it's successful you should see a message like Query OK, 1 row affected (0.00 sec) . Any query should have at east this much output. If you see no message at all (eg you press enter and the next line just looks like a -> prompt) make sure you've closed all of your parentheses and quotation mark and ended the query with a semicolon ( ; ).

Answer 4

Yes, MySQL informs you of the result of each query. Here's what I've just got:

mysql> create database foo;

Query OK, 1 row affected (0.01 sec)

mysql> use foo;

Database changed

mysql> show tables;

Empty set (0.00 sec)

mysql>

If you need visual feedback, please consider downloading MySQL Workbench - it is easy to use and, as a GUI application, is explicit enough to make a new user feel comfortable.

Answer 5

When you issue the following command at the mysql prompt:

CREATE database <database_name>;

You should be presented with the typical "Ok" prompt afterwards. You should then be able to do:

show databases;

That will show you a list of databases on the system and in there you should see the database you created.