Web site for SQL online practice

Find the URL of a SQL online exercise
Find the URL of a SQL online exercise

Before learning SQL statements, found an online practice URL, the page posted a series of topics, and then under the topic to enter the SQL statement and execution, if the correct will pop up the execution results, if the error prompts the statement error.
Now can not find this URL, do you have any online practice SQL good URL?
Preferably MySQL, no MySQL can be SQL.

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Install MySQL locally and use phpMyAdmin to manage and practice. http://www.phpmyadmin.net/home_page/index.php
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http://sqlzoo.cn/
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(⊙o⊙) Oh, understand the error, such a lot of questions AH:
Http://www.baidu.com/s?wd=sql%C1%B7%CF%B0%CC%E2&rsv_bp=0&rsv_spt=3
Http://bbs.iufida.com/thread-91261-1-1.html

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