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SQL exercises

June 29, 23:14 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: 15114

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Varenikov D.M. (Dmitriy Varenikov)	20	129	251	2026-06-28 23:28:11	2026-06-29 16:31:13	1023
2	Williams B. (BW)	35	66	262	2025-04-17 12:32:37	2026-06-24 13:25:33	623573
3	Williams B. (BW)	35	66	24	2026-05-15 13:25:32	2026-06-22 22:34:12	55269
4	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		18996
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		53425
6	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		53451
7	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		74030
8	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		87089
9	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		97317
10	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		98159
11	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		128871
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		222098
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		297938
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		509641
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		713516
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		743765
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		755953
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		903806
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		905114
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		927864
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1037403
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1149468
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1149468
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1178624
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1205145
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1218777
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1284819
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1288133
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1290522
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1323187
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1375450
32	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1400027
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1716604
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1820593
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1916758
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1955966
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2072876
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2219457
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2471213
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2599565
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2733919
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2776106
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2779853
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3021919
45	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3089282
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3163612
47	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3228566
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3236537
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3276052
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3299779
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3610168
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3637450
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3645512
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3663796
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3707874
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3847849
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3946117
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3949298
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4091489
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4152036
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4205395
62	Zyrin V.E. (Vezyr)	550	0	29	2018-05-29 14:14:19		4252860
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4344927
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4348836
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4348915
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4371544
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4385701
68	F (uff)	65	25	95	2018-01-22 15:57:03		4435637
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4487306
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4524776
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4526537
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4527605
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4565320
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4592437
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4625500
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4702145
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4748690
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4752839
79	F (uff)	65	25	185	2017-06-01 10:27:49		4774367
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4814240
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4876131
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5111034
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5146507
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5225730
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5356066
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5398165
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5567586
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5599273
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5633272
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5642633
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5668480
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5682784
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5684470
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5696079
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5699650
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5702981
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5746667
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5747934
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5756495
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5766226

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