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SQL exercises

April 05, 19:43 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: 15054

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
2	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
3	Sarkis'yan G. (gennadi_s)	15	156	196	2026-04-04 14:52:32		1731
4	Sarkis'yan G. (gennadi_s)	15	156	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
5	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
6	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		6260
7	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
8	Polyakov V.M. (rock_4)	116	6	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
9	Sarkis'yan G. (gennadi_s)	15	156	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
10	Polyakov V.M. (rock_4)	116	6	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
11	Polyakov V.M. (rock_4)	116	6	139	2026-03-24 13:03:07	2026-03-25 16:32:20	1649
12	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47		16425
13	Polyakov V.M. (rock_4)	116	6	138	2026-02-20 17:03:21	2026-03-24 11:15:38	45732
14	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		99488
15	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		175328
16	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		387031
17	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		508751
18	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		590906
19	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		621154
20	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		633342
21	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		781195
22	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		782503
23	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		805254
24	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		914793
25	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1026857
26	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1026858
27	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1056013
28	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1082534
29	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1096166
30	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1162208
31	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1165522
32	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1167912
33	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1200577
34	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1252839
35	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1277416
36	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1593993
37	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1697982
38	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1794147
39	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1833356
40	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1950265
41	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2096846
42	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2348603
43	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2476955
44	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2611309
45	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2653495
46	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2657243
47	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2899309
48	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2966672
49	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3041002
50	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3105956
51	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3113926
52	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3153441
53	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3177168
54	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3487558
55	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3514840
56	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3522902
57	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3541185
58	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3585264
59	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3725239
60	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3823506
61	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3826687
62	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3968878
63	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4029426
64	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4082785
65	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4130250
66	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4222316
67	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4226225
68	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4226304
69	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4248934
70	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4263090
71	F (uff)	65	25	95	2018-01-22 15:57:03		4313027
72	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4364695
73	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4402165
74	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4403926
75	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4404995
76	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4442710
77	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4469826
78	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4502889
79	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4579534
80	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4626079
81	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4630228
82	F (uff)	65	25	185	2017-06-01 10:27:49		4651756
83	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4691629
84	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4753520
85	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4988424
86	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5023897
87	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5103120
88	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5233455
89	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5275554
90	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5444975
91	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5476663
92	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5510661
93	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5520023
94	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5545869
95	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5560173
96	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5561859
97	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5573468
98	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5577039
99	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5580370
100	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5624056

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