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SQL exercises

October 02, 22:56 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: 15184

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	20	116	240	2025-09-08 22:07:14	2025-09-24 08:05:14	22198
2	Kreslavskij O.M. (Arcan)	6	244	264	2025-09-22 15:49:45	2025-09-22 15:51:24	2
3	Kreslavskij O.M. (Arcan)	6	244	308	2025-09-21 19:41:47	2025-09-21 23:16:59	215
4	Chernov D.V. (Kursist)	2	262	264	2025-09-21 20:16:45	2025-09-21 21:50:30	94
5	Chernov D.V. (Kursist)	2	262	308	2025-09-06 21:42:05	2025-09-21 21:43:05	21601
6	Koptel'tsev V. (selber)	20	116	264	2025-09-20 22:13:46	2025-09-20 22:17:11	3
7	Krasovskij E.A. (pegoopik)	1	262	264	2025-09-20 11:13:01	2025-09-20 11:14:31	2
8	Sarkis'yan G. (gennadi_s)	21	115	181	2025-09-06 14:04:35		37972
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		120824
10	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		242544
11	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		316600
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		324699
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		354947
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		367135
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		514988
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		516296
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		539047
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		566487
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		648585
20	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		760650
21	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		760650
22	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		789806
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		816327
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		829959
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		896001
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		899315
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		901705
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		934370
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		979545
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		986632
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1011209
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1256241
33	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1293797
34	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1327786
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1431775
36	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1527940
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1567148
38	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1684058
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1830639
40	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1944689
41	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2082396
42	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2210748
43	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2345102
44	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2387288
45	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2391036
46	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2633102
47	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2700465
48	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2774795
49	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2839749
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2847719
51	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2887234
52	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2910961
53	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3221351
54	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3248633
55	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3256695
56	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3274978
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3319056
58	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3459032
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3557299
60	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3560480
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3702671
62	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3763218
63	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3816578
64	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3864042
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3956109
66	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3960018
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3960097
68	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3982726
69	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3996883
70	F (uff)	65	25	95	2018-01-22 15:57:03		4046820
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4098488
72	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4135958
73	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4137719
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4138788
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4176502
76	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4203619
77	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4236682
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4313327
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4359872
80	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4364021
81	F (uff)	65	25	185	2017-06-01 10:27:49		4385549
82	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4425422
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4487313
84	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4722217
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4757689
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4836913
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4967248
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5009347
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5178768
90	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5210455
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5244454
92	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5253816
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5279662
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5293966
95	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5295652
96	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5307261
97	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5310832
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5314163
99	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5357849
100	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5359116

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