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SQL exercises

March 31, 14:01 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		268
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		8883
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		91945
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		167785
14	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		379489
15	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		501209
16	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		583364
17	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		613612
18	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		625800
19	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		773653
20	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		774961
21	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		797712
22	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		907250
23	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1019315
24	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1019315
25	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1048471
26	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1074992
27	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1088624
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1154666
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1157980
30	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1160370
31	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1193034
32	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1245297
33	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1269874
34	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1586451
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1690440
36	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1786605
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1825813
38	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1942723
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2089304
40	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2341061
41	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2469413
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2603766
43	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2645953
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2649700
45	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2891766
46	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2959129
47	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3033459
48	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3098414
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3106384
50	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3145899
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3169626
52	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3480015
53	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3507297
54	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3515359
55	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3533643
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3577721
57	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3717696
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3815964
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3819145
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3961336
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4021883
62	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4075242
63	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4122707
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4214774
65	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4218683
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4218762
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4241391
68	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4255548
69	F (uff)	65	25	95	2018-01-22 15:57:03		4305485
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4357153
71	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4394623
72	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4396384
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4397452
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4435167
75	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4462284
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4495347
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4571992
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4618537
79	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4622686
80	F (uff)	65	25	185	2017-06-01 10:27:49		4644214
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4684087
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4745978
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4980881
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5016354
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5095577
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5225913
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5268012
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5437433
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5469120
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5503119
91	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5512481
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5538327
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5552631
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5554317
95	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5565926
96	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5569497
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5572828
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5616514
99	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5617781
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5626343

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