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SQL exercises

October 12, 02:56 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: 15173

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		134023
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		255744
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		329800
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		337898
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		368146
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		380335
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		528188
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		529496
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		552246
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		579687
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		661785
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		773850
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		773850
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		803006
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		829527
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		843159
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		909201
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		912515
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		914904
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		947569
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		992745
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		999832
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1024408
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1269440
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1306996
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1340986
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1444975
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1541140
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1580348
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1697258
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1843839
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1957888
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2095595
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2223947
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2358301
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2400488
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2404235
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2646301
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2713664
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2787994
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2852948
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2860919
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2900434
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2924161
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3234550
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3261832
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3269894
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3288178
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3332256
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3472231
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3570499
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3573680
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3715871
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3776418
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3829777
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3877242
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3969309
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3973218
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3973297
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3995926
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4010083
63	F (uff)	65	25	95	2018-01-22 15:57:03		4060019
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4111688
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4149158
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4150919
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4151987
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4189702
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4216819
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4249882
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4326527
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4373071
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4377221
74	F (uff)	65	25	185	2017-06-01 10:27:49		4398749
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4438622
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4500513
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4735416
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4770889
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4850112
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4980448
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5022547
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5191968
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5223655
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5257654
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5267015
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5292862
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5307166
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5308851
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5320461
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5324032
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5327363
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5371049
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5372316
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5380877
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5390607
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5399234
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5629673
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5631300
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5679460
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5707620

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