SQL exercises

January 21, 14:23 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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Ratings

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  • Top 100 on latest exercises
  • "Liberal" rating
  • Olympic rating
  • TOP 100 of Learning Stage
  • Rating by summation of ranks
  • 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 
  • Rating on the exercise:
   enter No
  • Optimistic rating
   enter factor

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  • Сhanges in exercises' TOP 10
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SQL exercises

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  • SELECT (learning stage,
      choosing DBMS)
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  • DML 
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Top 100 results shown on the exercise #172

No	Surname	Seconds	dd hh:mm:ss	Date
1	Zotov P.G. (Ozzy)	19	0 00:00:19	2011-03-11
2	Krasovskij E.A. (pegoopik)	8307	0 02:18:27	2017-02-26
3	Sal'nikov S.A. ($erges)	25153	0 06:59:13	2011-03-21
4	Kuznetsov V.S. (herrRo)	86111	0 23:55:11	2011-03-12
5	Vyazovetskov A.S. (alex_v)	94239	1 02:10:39	2018-04-06
6	Shindin A.V. (AlShin)	101685	1 04:14:45	2011-04-14
7	Bezhaev A.Yu. (Baser)	110134	1 06:35:34	2011-03-20
8	Yatsuk A.A. (Faust_zp)	125886	1 10:58:06	2011-11-15
9	Kreslavskij O.M. (Arcan)	153304	1 18:35:04	2011-03-13
10	Kurochkin P.A. (qwrqwr)	157690	1 19:48:10	2011-03-16
11	Chernov D.V. (Kursist)	185854	2 03:37:34	2019-03-02
12	Karasyova N.V. (vlksm)	223033	2 13:57:13	2011-03-14
13	Doschenko V.N. (mcrain)	267114	3 02:11:54	2018-04-10
14	Kostomarov A.V. (al29)	285152	3 07:12:32	2016-01-15
15	Fokin A. (Vizitor )	306772	3 13:12:52	2012-04-24
16	Orlov M.V. (Eagleoff)	376087	4 08:28:07	2011-08-15
17	Filippkin D.V. (_dimon_)	424714	4 21:58:34	2013-05-27
18	Nashyn E. (O.o)	496171	5 17:49:31	2011-03-17
19	Movlyanov A.P. (Oct)	1815473	21 00:17:53	2015-08-11
20	Boiko D. (Angellore)	13790948	159 14:49:08	2011-10-02
21	Dubinskij A.V. (_velial)	42968192	497 07:36:32	2012-07-31

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