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SQL exercises

June 12, 00:02 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: 15119

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Suprun D. (TimonSP)	77	15	24	2026-06-06 13:08:47	2026-06-06 13:25:05	16
2	Makarov I.A. (_Bkmz_)	55	35	168	2026-06-06 10:14:03	2026-06-06 11:42:23	88
3	Varenikov D.M. (Dmitriy Varenikov)	20	128	241	2026-05-23 22:21:57	2026-06-05 18:53:52	18512
4	Vyazovetskov A.S. (alex_v)	7	241	163	2026-06-04 13:05:06	2026-06-05 15:49:57	1605
5	Vyazovetskov A.S. (alex_v)	7	241	234	2026-06-02 18:21:50	2026-06-03 17:04:09	1362
6	Vyazovetskov A.S. (alex_v)	7	241	231	2026-06-01 13:05:50	2026-06-02 11:49:03	1363
7	Makarov I.A. (_Bkmz_)	55	35	185	2026-05-30 11:04:38	2026-05-30 12:08:17	64
8	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		27553
9	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		27579
10	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		39517
11	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		48158
12	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		61217
13	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		71445
14	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		72287
15	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		102999
16	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		196226
17	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		272066
18	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		483770
19	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		605490
20	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		687645
21	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		717893
22	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		730081
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		877934
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		879242
25	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		901993
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1011531
27	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1123596
28	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1123596
29	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1152752
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1179273
31	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1192905
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1258947
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1262261
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1264651
35	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1297316
36	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1349578
37	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1374155
38	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1690732
39	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1794721
40	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1890886
41	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1930094
42	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2047004
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2193585
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2445342
45	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2573694
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2708048
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2750234
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2753982
49	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		2996048
50	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3063411
51	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3137741
52	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3202695
53	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3210665
54	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3250180
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3273907
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3584296
57	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3611578
58	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3619641
59	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3637924
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3682002
61	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3821977
62	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3920245
63	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3923426
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4065617
65	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4126164
66	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4179523
67	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4226988
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4319055
69	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4322964
70	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4323043
71	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4345672
72	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4359829
73	F (uff)	65	25	95	2018-01-22 15:57:03		4409766
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4461434
75	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4498904
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4500665
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4501733
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4539448
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4566565
80	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4599628
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4676273
82	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4722818
83	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4726967
84	F (uff)	65	25	185	2017-06-01 10:27:49		4748495
85	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4788368
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4850259
87	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5085162
88	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5120635
89	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5199859
90	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5330194
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5372293
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5541714
93	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5573401
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5607400
95	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5616762
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5642608
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5656912
98	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5658598
99	Varenikov D.M. (Dmitriy Varenikov)	20	128	263	2015-08-31 08:35:37		5670207
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5673778

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