SQL exercises

June 25, 07:01 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 
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  • Optimistic rating
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  • Сhanges in exercises' TOP 10
  • Results' chart

SQL exercises

  • SELECT (learning stage)
  • SELECT (learning stage,
      choosing DBMS)
  • SELECT (rating stages)
  • DML 
  • Transact-SQL tests
  • Modelling of data
  • Visual modelling (painting)
  • Exercises voting

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Top 100 results shown on the exercise #174

No	Surname	Seconds	dd hh:mm:ss	Date
1	Kurochkin P.A. (qwrqwr)	7	0 00:00:07	2011-02-25
2	Kuznetsov V.S. (herrRo)	4629	0 01:17:09	2011-03-04
3	Agapov V. (KERBEROS)	4676	0 01:17:56	2013-03-15
4	Grecha (grecha)	4695	0 01:18:15	2014-02-02
5	Timofeeva E.V. (Umrikhina)	5087	0 01:24:47	2015-10-23
6	Sal'nikov S.A. ($erges)	5123	0 01:25:23	2011-03-15
7	Zajtsev V.S. (Sleeping)	5372	0 01:29:32	2014-02-10
8	Krasovskij E.A. (pegoopik)	5578	0 01:32:58	2011-03-07
9	Drozdkov A.N. (anddros)	5703	0 01:35:03	2011-03-10
10	Petrov Y. (YuriPetrov)	6578	0 01:49:38	2014-08-26
11	Bezhaev A.Yu. (Baser)	7082	0 01:58:02	2011-03-02
12	Grinkevich D.L. (Dmitrij Grinkevich)	7842	0 02:10:42	2012-11-04
13	Utyonkov M.N. (=Maxim=)	8136	0 02:15:36	2011-09-27
14	Karasyova N.V. (vlksm)	8556	0 02:22:36	2011-03-07
15	Titovskij P.S. (kli3ma)	9175	0 02:32:55	2012-05-16
16	Yatsuk A.A. (Faust_zp)	9425	0 02:37:05	2011-09-21
17	Dubinskij A.V. (_velial)	11302	0 03:08:22	2011-02-27
18	Kalinin K.A. (kalinin_k)	11523	0 03:12:03	2011-12-18
19	Fokin A. (Vizitor )	12293	0 03:24:53	2015-06-08
20	Tarasov D.B. (Gavrila)	13036	0 03:37:16	2011-03-21
21	Shindin A.V. (AlShin)	13560	0 03:46:00	2011-04-10
22	Kreslavskij O.M. (Arcan)	19629	0 05:27:09	2011-02-25
23	Vakhrameev A. (WY)	20493	0 05:41:33	2013-11-30
24	Egorov Yu.A. (Yury Egorov)	20848	0 05:47:28	2012-08-13
25	Aliev R. (y4nzi)	21208	0 05:53:28	2017-11-09
26	Vas'kov E.V. (Johan)	25647	0 07:07:27	2011-12-08
27	Vyazovetskov A.S. (alex_v)	26914	0 07:28:34	2013-01-10
28	Filippkin D.V. (_dimon_)	29316	0 08:08:36	2011-09-08
29	Proskurin Yu.N. (Xonner)	32072	0 08:54:32	2016-01-31
30	Dvoryaninov V. (Valdaj)	44389	0 12:19:49	2011-03-14
31	Pyatiletov A. (MontaG)	72249	0 20:04:09	2015-05-06
32	Orlov M.V. (Eagleoff)	73238	0 20:20:38	2011-05-06
33	Chebykin D.N. (GriGrim)	87481	1 00:18:01	2012-04-13
34	Koptel'tsev V. (selber)	91143	1 01:19:03	2018-01-20
35	Nashyn E. (O.o)	92107	1 01:35:07	2011-03-03
36	Doschenko V.N. (mcrain)	96178	1 02:42:58	2016-12-22
37	Pavlov A.V. (Anton)	112592	1 07:16:32	2016-03-09
38	Williams B. (BW)	127398	1 11:23:18	2015-03-05
39	Fajnberg M.L. (burnall)	170069	1 23:14:29	2012-01-12
40	Murashkin I.V. (lepton)	173844	2 00:17:24	2012-02-17
41	Fedevych V.I. (labuch_fedev)	179194	2 01:46:34	2017-03-07
42	Varenikov D.M. (Dmitriy Varenikov)	314821	3 15:27:01	2013-12-30
43	Shaymardanov M.M. (xLiSPirit)	327069	3 18:51:09	2012-01-09
44	Martynyuk (Wiedzmen)	489942	5 16:05:42	2013-10-22
45	Chernov D.V. (Kursist)	604197	6 23:49:57	2017-11-13
46	Kostomarov A.V. (al29)	693551	8 00:39:11	2015-02-24
47	Boiko D. (Angellore)	895643	10 08:47:23	2011-10-16
48	Kukushkin S.A. (smog)	2670406	30 21:46:46	2012-05-25
49	Sysoev A.V. (Sysa)	2939509	34 00:31:49	2016-09-07
50	F (uff)	7244327	83 20:18:47	2016-01-14
51	Movlyanov A.P. (Oct)	8056575	93 05:56:15	2014-01-17
52	Bryzgunov V.A. (lorins_)	21312405	246 16:06:45	2013-01-23

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