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SQL exercises

October 06, 12:25 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		43101
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		125953
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		247673
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		321729
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		329828
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		360076
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		372264
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		520117
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		521425
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		544176
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		571616
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		653715
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		765779
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		765780
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		794935
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		821456
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		835088
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		901130
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		904444
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		906834
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		939499
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		984674
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		991761
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1016338
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1261370
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1298926
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1332915
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1436904
30	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1533069
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1572278
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1689187
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1835768
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1949818
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2087525
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2215877
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2350231
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2392417
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2396165
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2638231
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2705594
42	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2779924
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2844878
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2852849
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2892363
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2916090
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3226480
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3253762
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3261824
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3280107
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3324186
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3464161
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3562429
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3565609
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3707800
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3768348
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3821707
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3869172
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3961238
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3965147
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3965226
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3987856
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4002012
64	F (uff)	65	25	95	2018-01-22 15:57:03		4051949
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4103617
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4141087
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4142848
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4143917
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4181632
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4208748
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4241811
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4318456
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4365001
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4369150
75	F (uff)	65	25	185	2017-06-01 10:27:49		4390678
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4430551
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4492442
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4727346
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4762819
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4842042
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4972377
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5014476
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5183897
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5215585
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5249584
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5258945
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5284791
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5299095
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5300781
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5312390
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5315961
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5319292
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5362978
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5364245
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5372807
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5382537
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5391164
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5621603
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5623229
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5671390

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