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SQL exercises

October 02, 22:39 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		37955
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		120807
10	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		242527
11	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		316583
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		324681
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		354930
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		367118
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		514971
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		516279
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		539030
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		566470
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		648568
20	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		760633
21	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		760633
22	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		789789
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		816310
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		829942
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		895984
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		899298
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		901688
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		934352
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		979528
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		986615
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1011192
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1256223
33	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1293779
34	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1327769
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1431758
36	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1527923
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1567131
38	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1684041
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1830622
40	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1944672
41	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2082379
42	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2210730
43	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2345084
44	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2387271
45	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2391018
46	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2633084
47	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2700447
48	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2774777
49	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2839731
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2847702
51	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2887217
52	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2910944
53	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3221333
54	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3248615
55	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3256677
56	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3274961
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3319039
58	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3459014
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3557282
60	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3560463
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3702654
62	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3763201
63	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3816560
64	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3864025
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3956092
66	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3960001
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3960080
68	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3982709
69	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3996866
70	F (uff)	65	25	95	2018-01-22 15:57:03		4046803
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4098471
72	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4135941
73	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4137702
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4138770
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4176485
76	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4203602
77	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4236665
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4313310
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4359855
80	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4364004
81	F (uff)	65	25	185	2017-06-01 10:27:49		4385532
82	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4425405
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4487296
84	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4722199
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4757672
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4836895
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4967231
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5009330
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5178751
90	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5210438
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5244437
92	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5253798
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5279645
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5293949
95	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5295635
96	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5307244
97	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5310815
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5314146
99	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5357832
100	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5359099

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