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SQL exercises

April 06, 18:19 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)	41	59	158	2026-04-06 16:38:40		101
2	Komarov A.N. (Shveda Saulya)	41	59	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		146
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		7616
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	Polyakov V.M. (rock_4)	116	6	138	2026-02-20 17:03:21	2026-03-24 11:15:38	45732
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		100843
19	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		176683
20	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		388386
21	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		510107
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		592261
23	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		622509
24	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		634698
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		782551
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		783859
27	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		806609
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		916148
29	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1028213
30	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1028213
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1057369
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1083890
33	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1097522
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1163564
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1166878
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1169267
37	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1201932
38	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1254195
39	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1278772
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1595349
41	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1699338
42	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1795503
43	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1834711
44	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1951621
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2098202
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2349958
47	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2478310
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2612664
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2654851
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2658598
51	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2900664
52	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2968027
53	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3042357
54	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3107311
55	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3115282
56	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3154797
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3178524
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3488913
59	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3516195
60	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3524257
61	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3542541
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3586619
63	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3726594
64	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3824862
65	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3828043
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3970234
67	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4030781
68	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4084140
69	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4131605
70	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4223672
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4227581
72	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4227660
73	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4250289
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4264446
75	F (uff)	65	25	95	2018-01-22 15:57:03		4314382
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4366051
77	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4403521
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4405282
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4406350
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4444065
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4471182
82	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4504245
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4580890
84	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4627435
85	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4631584
86	F (uff)	65	25	185	2017-06-01 10:27:49		4653112
87	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4692985
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4754876
89	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4989779
90	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5025252
91	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5104475
92	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5234811
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5276910
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5446331
95	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5478018
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5512017
97	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5521378
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5547225
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5561529
100	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5563214

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