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SQL exercises

April 24, 06:00 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: 14600

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Slavutinskij V.V. (Vasilko)	425	0	5	2024-04-22 17:26:35		2194
2	Slavutinskij V.V. (Vasilko)	425	0	7	2024-04-22 17:26:21		2194
3	Komarov A.N. (Shveda Saulya)	53	34	151	2024-01-04 20:54:03	2024-04-16 01:11:59	147138
4	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		31350
5	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		57871
6	Latyntsev N.G. (aks_nsk)	51	37	253	2024-03-05 14:17:51		71503
7	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	305	2024-01-19 17:35:31		137545
8	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	306	2024-01-17 10:21:39		140859
9	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	71	2024-01-15 18:32:03		143248
10	Nikolaenko A.V. (Shadow77)	80	14	135	2023-12-24 02:07:10		175913
11	Komarov A.N. (Shveda Saulya)	53	34	150	2023-11-22 17:11:28		221089
12	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		228176
13	Rudikov E. (cubie)	130	0	138	2023-10-31 17:27:54		252753
14	Komarov A.N. (Shveda Saulya)	53	34	149	2023-05-14 13:36:07		497784
15	Zajtsev V.S. (Sleeping)	20	109	150	2023-04-18 11:40:16		535340
16	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		569330
17	Latyntsev N.G. (aks_nsk)	51	37	255	2023-01-12 16:01:39		673319
18	Koptel'tsev V. (selber)	25	95	237	2022-11-06 21:16:51		769484
19	Borisenkov D.V. (xuser)	94	9	173	2022-10-10 15:48:20		808692
20	Lukov D.R. (Gendalf)	231	0	90	2022-07-21 11:18:50		925602
21	Pavlov A.V. (Anton)	58	29	141	2022-04-10 16:17:39		1072183
22	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1186232
23	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1323939
24	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1452291
25	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1586645
26	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1628832
27	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1632579
28	Kozharinov A. (bubala)	195	0	10	2020-09-30 09:55:07		1874645
29	Samarin A. (not.yet.sql.master)	133	0	112	2020-08-14 15:12:10		1942008
30	Koptel'tsev V. (selber)	25	95	259	2020-06-24 00:22:07		2016338
31	Samarin A. (not.yet.sql.master)	133	0	138	2020-05-09 21:48:04		2081292
32	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2089263
33	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2128778
34	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2152505
35	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2462894
36	Bazavluk M. (DoNotLook)	92	9	141	2019-07-30 23:04:12		2490176
37	Romanov K.Yu. (kostik)	289	0	12	2019-07-25 08:42:10		2498238
38	Kordyum A. (alko58)	213	0	12	2019-07-12 15:58:52		2516522
39	Pavlov A.V. (Anton)	58	29	168	2019-06-12 01:20:21		2560600
40	Mal'tsev A.V. (Palkin)	108	8	218	2019-03-06 20:25:17		2700575
41	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		2798843
42	Grishunin M.F. (MikhailFG)	88	10	144	2018-12-26 09:36:27		2802024
43	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		2944215
44	Skorohod I. (Dracul4ik)	75	15	45	2018-08-07 14:38:23		3004762
45	Voevutskij S.A. (SergLK)	198	0	45	2018-07-01 13:19:14		3058121
46	Zyrin V.E. (Vezyr)	512	0	29	2018-05-29 14:14:19		3105586
47	Zajtsev V.S. (Sleeping)	20	109	226	2018-04-05 11:18:07		3183522
48	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		3197653
49	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3201562
50	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3201641
51	Azbel' E.G. (enull)	74	15	148	2018-03-08 04:10:21		3224270
52	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3238427
53	F (uff)	63	25	95	2018-01-22 15:57:03		3288363
54	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3340032
55	Kordyum A. (alko58)	213	0	101	2017-11-21 18:18:43		3377502
56	Zajtsev V.S. (Sleeping)	20	109	190	2017-11-20 12:57:31		3379263
57	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3380331
58	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3418046
59	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3445163
60	Skorohod I. (Dracul4ik)	75	15	156	2017-09-12 19:34:33		3478226
61	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3554871
62	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3601416
63	Vorob'ev E.V. (Johnnymnemonic)	147	0	138	2017-06-16 09:15:49		3605565
64	F (uff)	63	25	185	2017-06-01 10:27:49		3627093
65	Skorohod I. (Dracul4ik)	75	15	146	2017-05-04 17:54:53		3666966
66	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3728857
67	Skorohod I. (Dracul4ik)	75	15	144	2016-10-10 15:20:14		3963760
68	Sysoev A.V. (Sysa)	47	39	165	2016-09-16 00:07:24		3999233
69	Sysoev A.V. (Sysa)	47	39	168	2016-07-22 23:44:07		4078456
70	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4208792
71	Titovskij P.S. (kli3ma)	45	45	164	2016-03-25 05:49:30		4250891
72	Sivoglazov M.A. (Gaizenberg)	64	24	127	2015-11-28 14:08:52		4420312
73	Maslyaev V.S. (Velmont)	86	11	170	2015-11-06 14:01:20		4451999
74	Sivoglazov M.A. (Gaizenberg)	64	24	261	2015-10-13 23:22:26		4485998
75	Fomichev A.V. (Fomichev)	186	0	101	2015-10-07 11:21:04		4495359
76	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4521206
77	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4535510
78	Frolov (dr.shtopor)	78	14	141	2015-09-08 10:04:55		4537196
79	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4548805
80	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4552376
81	Halushka B. (halushka)	44	46	211	2015-08-26 13:33:28		4555707
82	Maslyaev V.S. (Velmont)	86	11	140	2015-07-27 05:27:50		4599393
83	Khromulyak O.M. (ChOleg)	117	5	150	2015-07-26 08:20:51		4600660
84	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4609221
85	Halushka B. (halushka)	44	46	143	2015-07-13 15:28:55		4618952
86	Halushka B. (halushka)	44	46	204	2015-07-07 15:42:03		4627578
87	Skorohod I. (Dracul4ik)	75	15	256	2015-01-28 15:03:11		4858017
88	Skorohod I. (Dracul4ik)	75	15	252	2015-01-27 11:56:41		4859644
89	Sysoev A.V. (Sysa)	47	39	143	2014-12-25 01:16:19		4907804
90	Grishin (alvigr)	76	15	185	2014-12-05 11:56:29		4935964
91	Fajnberg M.L. (burnall)	70	21	122	2014-10-31 12:46:14		4986314
92	Kabanets E.G. (azkaban)	90	9	209	2014-09-27 01:00:23		5035980
93	Sivoglazov M.A. (Gaizenberg)	64	24	178	2014-08-26 23:17:37		5080723
94	Perfilov B.V. (B o r i s)	97	9	29	2014-02-23 19:20:39		5345920
95	Utyonkov M.N. (=Maxim=)	46	42	255	2014-02-03 12:39:35		5375121
96	Shaymardanov M.M. (xLiSPirit)	38	62	147	2013-12-11 13:22:21		5452838
97	Martynyuk (Wiedzmen)	55	32	135	2013-11-26 20:27:27		5474013
98	Chebykin D. (GriGrim)	37	62	255	2013-11-07 15:23:46		5501677
99	Titovskij P.S. (kli3ma)	45	45	203	2013-10-31 10:01:45		5512079
100	Martynyuk (Wiedzmen)	55	32	185	2013-10-22 15:41:24		5524699

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