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SQL exercises

April 07, 02:52 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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SQL exercises

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Recent leaders activity

Rating - rating position;
3rd score - number of points earned on the third stage;
Ex - exercise's number;
Start - time when the exercise was started;
Finish - time when the exercise was solved;
S_time (min) - time in minutes spent for solving the exercise

Involved in rating: 15058

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
2	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
3	Polyakov V.M. (rock_4)	116	6	146	2026-04-06 15:53:06		660
4	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
5	Sarkis'yan G. (gennadi_s)	15	159	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
6	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
7	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
8	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
9	Sarkis'yan G. (gennadi_s)	15	159	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
10	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
11	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		8129
12	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
13	Polyakov V.M. (rock_4)	116	6	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
14	Sarkis'yan G. (gennadi_s)	15	159	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
15	Polyakov V.M. (rock_4)	116	6	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
16	Polyakov V.M. (rock_4)	116	6	139	2026-03-24 13:03:07	2026-03-25 16:32:20	1649
17	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		101357
18	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		177196
19	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		388900
20	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		510620
21	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		592775
22	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		623023
23	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		635211
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		783064
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		784372
26	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		807123
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		916661
28	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1028726
29	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1028726
30	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1057882
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1084403
32	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1098035
33	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1164077
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1167391
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1169781
36	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1202446
37	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1254708
38	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1279285
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1595862
40	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1699851
41	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1796016
42	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1835224
43	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1952134
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2098715
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2350472
46	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2478824
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2613178
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2655364
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2659112
50	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2901178
51	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2968541
52	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3042871
53	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3107825
54	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3115795
55	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3155310
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3179037
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3489427
58	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3516709
59	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3524771
60	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3543054
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3587132
62	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3727107
63	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3825375
64	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3828556
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3970747
66	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4031294
67	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4084654
68	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4132118
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4224185
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4228094
71	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4228173
72	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4250802
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4264959
74	F (uff)	65	25	95	2018-01-22 15:57:03		4314896
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4366564
76	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4404034
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4405795
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4406863
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4444578
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4471695
81	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4504758
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4581403
83	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4627948
84	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4632097
85	F (uff)	65	25	185	2017-06-01 10:27:49		4653625
86	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4693498
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4755389
88	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4990293
89	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5025765
90	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5104989
91	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5235324
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5277423
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5446844
94	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5478531
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5512530
96	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5521892
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5547738
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5562042
99	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5563728
100	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5575337

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