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SQL exercises

October 02, 23:05 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		37981
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		120833
10	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		242553
11	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		316609
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		324707
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		354956
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		367144
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		514997
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		516305
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		539056
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		566496
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		648594
20	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		760659
21	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		760659
22	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		789815
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		816336
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		829968
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		896010
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		899324
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		901713
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		934378
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		979554
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		986641
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1011218
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1256249
33	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1293805
34	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1327795
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1431784
36	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1527949
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1567157
38	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1684067
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1830648
40	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1944698
41	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2082405
42	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2210756
43	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2345110
44	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2387297
45	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2391044
46	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2633110
47	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2700473
48	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2774803
49	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2839757
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2847728
51	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2887243
52	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2910970
53	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3221359
54	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3248641
55	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3256703
56	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3274987
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3319065
58	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3459040
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3557308
60	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3560489
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3702680
62	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3763227
63	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3816586
64	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3864051
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3956118
66	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3960027
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3960106
68	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3982735
69	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3996892
70	F (uff)	65	25	95	2018-01-22 15:57:03		4046828
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4098497
72	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4135967
73	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4137728
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4138796
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4176511
76	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4203628
77	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4236691
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4313336
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4359881
80	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4364030
81	F (uff)	65	25	185	2017-06-01 10:27:49		4385558
82	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4425431
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4487322
84	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4722225
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4757698
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4836921
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4967257
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5009356
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5178777
90	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5210464
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5244463
92	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5253824
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5279671
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5293975
95	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5295661
96	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5307270
97	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5310841
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5314172
99	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5357858
100	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5359125

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