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SQL exercises

March 31, 15:55 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: 15412

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	123	4	140	2026-03-31 09:33:07		382
2	Polyakov V.M. (rock_4)	123	4	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
3	Sarkis'yan G. (gennadi_s)	15	156	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
4	Polyakov V.M. (rock_4)	123	4	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
5	Polyakov V.M. (rock_4)	123	4	139	2026-03-24 13:03:07	2026-03-25 16:32:20	1649
6	Polyakov V.M. (rock_4)	123	4	254	2026-03-25 09:58:47		8997
7	Polyakov V.M. (rock_4)	123	4	138	2026-02-20 17:03:21	2026-03-24 11:15:38	45732
8	Zajtsev V.S. (Sleeping)	22	118	32	2026-03-19 13:18:10	2026-03-19 14:58:33	100
9	Zajtsev V.S. (Sleeping)	22	118	264	2026-03-19 12:44:12	2026-03-19 13:12:45	29
10	Zajtsev V.S. (Sleeping)	22	118	239	2026-03-19 11:19:45	2026-03-19 12:26:56	67
11	Zajtsev V.S. (Sleeping)	22	118	150	2023-04-18 11:40:16	2026-03-19 11:14:56	1535015
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		92059
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		167899
14	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		379602
15	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		501323
16	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		583477
17	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		613726
18	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		625914
19	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		773767
20	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		775075
21	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		797825
22	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		907364
23	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1019429
24	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1019429
25	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1048585
26	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1075106
27	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1088738
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1154780
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1158094
30	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1160483
31	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1193148
32	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1245411
33	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1269988
34	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1586565
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1690554
36	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1786719
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1825927
38	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1942837
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2089418
40	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2341174
41	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2469526
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2603880
43	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2646067
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2649814
45	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2891880
46	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2959243
47	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3033573
48	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3098527
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3106498
50	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3146013
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3169740
52	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3480129
53	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3507411
54	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3515473
55	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3533757
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3577835
57	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3717810
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3816078
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3819259
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3961450
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4021997
62	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4075356
63	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4122821
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4214888
65	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4218797
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4218876
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4241505
68	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4255662
69	F (uff)	65	25	95	2018-01-22 15:57:03		4305598
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4357267
71	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4394737
72	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4396498
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4397566
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4435281
75	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4462398
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4495461
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4572106
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4618651
79	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4622800
80	F (uff)	65	25	185	2017-06-01 10:27:49		4644328
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4684201
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4746092
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4980995
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5016468
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5095691
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5226027
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5268126
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5437547
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5469234
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5503233
91	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5512594
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5538441
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5552745
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5554431
95	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5566040
96	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5569611
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5572942
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5616628
99	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5617895
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5626456

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