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July 31, 21:27 MSK

SQL Exercises is intended for acquiring good practical experience, which is focused on data operation, namely on SQL DML. Certain exercises for beginners are provided on the site, they are supplied with the necessary reference source on SQL syntax with a great number of examples. Apart from them, 3 rating stages are suggested, they are aimed at testing of specialists and their certification. The source is absolutely free of charge, and the certificate purchase has a voluntary basis.
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Usage of SELECT statement: the learning stage

    Here you can get practice in constructing queries on data retrieving (SELECT statement of SQL language). The exercises included are addressing to beginners and can be solved in arbitrary order. In order your solutions have been stored in system, the statistics of the solved exercises were conducted, there was an opportunity of participation in ratings and discussions in forum the registration and the authorized logon is required.
    On exercises' page it is possible to carry out any SELECT statements which are addressing to the learning databases. To switch off checking the correctness of the solutions, click "without check" checkbox.
If you consider yourself as a professional and plan to compete with others or to get certificate, proceed to certification stages.
    More about certification.
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