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SQL exercises

October 24, 13:40 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: 13900

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	13	192	192	2026-10-17 13:29:17	2026-10-22 14:52:53	7284
2	Frolov K.A. (Murderface_)	136	0	53	2026-10-19 19:02:15		6878
3	Krasovskij E.A. (pegoopik)	1	268	192	2026-10-16 18:51:16	2026-10-16 18:51:23	0
4	Safronov P.A. (Paulus73)	117	6	140	2026-10-09 09:42:14	2026-10-15 12:25:59	8804
5	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		19959
6	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		34846
7	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		68009
8	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		82078
9	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		92587
10	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		122406
11	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		125299
12	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		134007
13	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		136775
14	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		186901
15	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		221330
16	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		254995
17	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		265223
18	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		266065
19	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		296777
20	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		390004
21	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		465844
22	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		677547
23	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		911670
24	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		923859
25	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1071711
26	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1073019
27	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1095770
28	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1205309
29	Slavutinskij V.V. (Vasilko)	459	0	5	2024-04-22 17:26:35		1317373
30	Slavutinskij V.V. (Vasilko)	459	0	7	2024-04-22 17:26:21		1317374
31	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1346530
32	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1373050
33	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1386682
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1452725
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1456038
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1458428
37	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1491093
38	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1543355
39	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1567932
40	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1884510
41	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1988498
42	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2084663
43	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2123872
44	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2240781
45	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2387362
46	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2639119
47	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2767471
48	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2901825
49	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2944011
50	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2947759
51	Kozharinov A. (bubala)	215	0	10	2020-09-30 09:55:07		3189825
52	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3257188
53	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3331518
54	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3396472
55	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3404443
56	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3443957
57	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3467685
58	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3778074
59	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3805356
60	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3813418
61	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3831701
62	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3875780
63	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4015755
64	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4114023
65	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4117204
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4259395
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4319942
68	Voevutskij S.A. (SergLK)	221	0	45	2018-07-01 13:19:14		4373301
69	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4420766
70	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4512832
71	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4516742
72	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4516820
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4539450
74	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4553607
75	F (uff)	66	23	95	2018-01-22 15:57:03		4603543
76	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4655211
77	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4692681
78	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4694443
79	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4695511
80	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4733226
81	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4760343
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4793406
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4870050
84	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4916595
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4920744
86	F (uff)	66	23	185	2017-06-01 10:27:49		4942272
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4982145
88	Movlyanov A.P. (Oct)	14	191	218	2017-03-22 18:23:50		5044036
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5278940
90	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5314413
91	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5393636
92	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5523971
93	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5566071
94	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5735491
95	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5767179
96	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5801178
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5810539
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5836385
99	Movlyanov A.P. (Oct)	14	191	194	2015-09-09 14:10:52		5850689
100	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5852375

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