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SQL exercises

October 06, 12:30 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: 15170

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	Sarkis'yan G. (gennadi_s)	21	115	181	2025-09-06 14:04:35		43106
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		125957
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		247678
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		321734
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		329832
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		360080
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		372269
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		520122
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		521430
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		544180
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		571620
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		653719
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		765784
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		765784
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		794940
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		821461
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		835092
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		901135
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		904449
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		906838
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		939503
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		984679
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		991766
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1016342
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1261374
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1298930
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1332920
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1436909
30	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1533073
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1572282
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1689191
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1835773
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1949822
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2087529
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2215881
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2350235
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2392422
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2396169
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2638235
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2705598
42	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2779928
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2844882
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2852853
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2892367
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2916095
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3226484
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3253766
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3261828
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3280111
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3324190
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3464165
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3562433
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3565614
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3707805
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3768352
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3821711
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3869176
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3961242
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3965152
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3965230
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3987860
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4002017
64	F (uff)	65	25	95	2018-01-22 15:57:03		4051953
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4103622
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4141091
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4142853
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4143921
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4181636
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4208753
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4241816
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4318461
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4365005
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4369154
75	F (uff)	65	25	185	2017-06-01 10:27:49		4390682
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4430555
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4492446
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4727350
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4762823
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4842046
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4972381
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5014481
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5183901
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5215589
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5249588
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5258949
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5284795
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5299099
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5300785
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5312395
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5315966
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5319297
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5362982
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5364249
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5372811
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5382541
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5391168
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5621607
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5623234
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5671394

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