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SQL exercises

October 13, 10:10 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: 15180

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		135897
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		257618
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		331674
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		339772
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		370020
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		382209
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		530062
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		531370
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		554120
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		581561
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		663659
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		775724
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		775724
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		804880
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		831401
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		845032
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		911075
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		914389
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		916778
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		949443
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		994619
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1001706
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1026282
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1271314
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1308870
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1342860
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1446849
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1543013
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1582222
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1699131
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1845713
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1959762
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2097469
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2225821
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2360175
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2402362
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2406109
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2648175
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2715538
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2789868
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2854822
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2862793
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2902308
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2926035
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3236424
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3263706
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3271768
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3290051
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3334130
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3474105
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3572373
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3575554
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3717745
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3778292
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3831651
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3879116
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3971183
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3975092
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3975170
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3997800
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4011957
63	F (uff)	65	25	95	2018-01-22 15:57:03		4061893
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4113562
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4151032
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4152793
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4153861
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4191576
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4218693
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4251756
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4328401
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4374945
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4379094
74	F (uff)	65	25	185	2017-06-01 10:27:49		4400622
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4440495
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4502386
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4737290
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4772763
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4851986
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4982322
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5024421
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5193841
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5225529
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5259528
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5268889
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5294736
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5309039
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5310725
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5322335
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5325906
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5329237
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5372922
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5374189
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5382751
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5392481
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5401108
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5631547
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5633174
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5681334
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5709494

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