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SQL exercises

April 06, 02:54 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: 15056

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
2	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
3	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
4	Sarkis'yan G. (gennadi_s)	15	156	196	2026-04-04 14:52:32		2162
5	Sarkis'yan G. (gennadi_s)	15	156	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
6	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
7	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		6691
8	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
9	Polyakov V.M. (rock_4)	116	6	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
10	Sarkis'yan G. (gennadi_s)	15	156	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
11	Polyakov V.M. (rock_4)	116	6	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
12	Polyakov V.M. (rock_4)	116	6	139	2026-03-24 13:03:07	2026-03-25 16:32:20	1649
13	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47		16855
14	Polyakov V.M. (rock_4)	116	6	138	2026-02-20 17:03:21	2026-03-24 11:15:38	45732
15	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		99918
16	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		175758
17	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		387461
18	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		509182
19	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		591336
20	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		621584
21	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		633773
22	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		781626
23	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		782934
24	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		805684
25	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		915223
26	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1027288
27	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1027288
28	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1056444
29	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1082965
30	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1096596
31	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1162639
32	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1165953
33	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1168342
34	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1201007
35	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1253270
36	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1277846
37	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1594424
38	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1698413
39	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1794577
40	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1833786
41	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1950695
42	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2097277
43	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2349033
44	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2477385
45	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2611739
46	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2653926
47	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2657673
48	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2899739
49	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2967102
50	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3041432
51	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3106386
52	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3114357
53	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3153871
54	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3177599
55	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3487988
56	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3515270
57	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3523332
58	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3541615
59	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3585694
60	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3725669
61	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3823937
62	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3827118
63	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3969309
64	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4029856
65	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4083215
66	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4130680
67	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4222746
68	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4226656
69	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4226734
70	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4249364
71	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4263521
72	F (uff)	65	25	95	2018-01-22 15:57:03		4313457
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4365126
74	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4402596
75	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4404357
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4405425
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4443140
78	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4470257
79	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4503320
80	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4579965
81	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4626509
82	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4630658
83	F (uff)	65	25	185	2017-06-01 10:27:49		4652186
84	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4692059
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4753950
86	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4988854
87	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5024327
88	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5103550
89	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5233886
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5275985
91	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5445405
92	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5477093
93	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5511092
94	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5520453
95	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5546299
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5560603
97	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5562289
98	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5573899
99	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5577470
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5580801

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