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SQL exercises

April 01, 18:54 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: 15419

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		451
2	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
3	Polyakov V.M. (rock_4)	116	6	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
4	Sarkis'yan G. (gennadi_s)	15	156	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
5	Polyakov V.M. (rock_4)	116	6	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
6	Polyakov V.M. (rock_4)	116	6	139	2026-03-24 13:03:07	2026-03-25 16:32:20	1649
7	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47		10616
8	Polyakov V.M. (rock_4)	116	6	138	2026-02-20 17:03:21	2026-03-24 11:15:38	45732
9	Zajtsev V.S. (Sleeping)	22	118	32	2026-03-19 13:18:10	2026-03-19 14:58:33	100
10	Zajtsev V.S. (Sleeping)	22	118	264	2026-03-19 12:44:12	2026-03-19 13:12:45	29
11	Zajtsev V.S. (Sleeping)	22	118	239	2026-03-19 11:19:45	2026-03-19 12:26:56	67
12	Zajtsev V.S. (Sleeping)	22	118	150	2023-04-18 11:40:16	2026-03-19 11:14:56	1535015
13	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		93679
14	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		169518
15	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		381222
16	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		502942
17	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		585097
18	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		615345
19	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		627533
20	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		775386
21	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		776694
22	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		799445
23	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		908983
24	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1021048
25	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1021048
26	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1050204
27	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1076725
28	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1090357
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1156399
30	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1159713
31	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1162103
32	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1194768
33	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1247030
34	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1271607
35	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1588184
36	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1692173
37	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1788338
38	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1827546
39	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1944456
40	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2091037
41	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2342794
42	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2471146
43	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2605500
44	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2647686
45	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2651434
46	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2893500
47	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2960863
48	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3035193
49	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3100147
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3108117
51	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3147632
52	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3171359
53	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3481748
54	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3509031
55	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3517093
56	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3535376
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3579454
58	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3719429
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3817697
60	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3820878
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3963069
62	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4023616
63	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4076975
64	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4124440
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4216507
66	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4220416
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4220495
68	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4243124
69	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4257281
70	F (uff)	65	25	95	2018-01-22 15:57:03		4307218
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4358886
72	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4396356
73	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4398117
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4399185
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4436900
76	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4464017
77	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4497080
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4573725
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4620270
80	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4624419
81	F (uff)	65	25	185	2017-06-01 10:27:49		4645947
82	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4685820
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4747711
84	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4982614
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5018087
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5097311
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5227646
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5269745
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5439166
90	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5470853
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5504852
92	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5514214
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5540060
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5554364
95	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5556050
96	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5567659
97	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5571230
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5574561
99	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5618247
100	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5619514

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