SQL exercises

January 26, 18:32 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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  • Top 100 on latest exercises
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  • TOP 100 of Learning Stage
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  • Top 10 (photos)
  • Last-week results
  • Rating of second-stage exercises (average)
  • Rating of 2nd-stage exercises (median)
  • Author's rating  • 2nd stage rating up to exercise:
   enter No 
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   enter No
  • Optimistic rating
   enter factor

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SQL exercises

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      choosing DBMS)
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  • DML 
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Top 100 results shown on the exercise #224

Last update: 2019-01-13

No	Surname	Seconds	dd hh:mm:ss	Date
1	Koptel'tsev V. (selber)	32	0 00:00:32	2017-04-14
2	Krasovskij E.A. (pegoopik)	83398	0 23:09:58	2017-04-16
3	Kreslavskij O.M. (Arcan)	166931	1 22:22:11	2017-04-17
4	Bezhaev A.Yu. (Baser)	179038	2 01:43:58	2017-06-10
5	Dubinskij A.V. (_velial)	259868	3 00:11:08	2018-05-02
6	Fokin A. (Vizitor )	381782	4 10:03:02	2019-08-03
7	Boiko D. (Angellore)	1179951	13 15:45:51	2017-11-28
8	Doschenko V.N. (mcrain)	1713998	19 20:06:38	2017-05-05
9	Chernov D.V. (Kursist)	4414870	51 02:21:10	2018-01-11
10	Kostomarov A.V. (al29)	4824629	55 20:10:29	2018-04-17

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