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SQL exercises

August 02, 00:11 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: 15138

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	19	132	198	2026-07-12 02:54:38	2026-07-31 20:31:37	28417
2	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		2077
3	Williams B. (BW)	35	67	236	2026-07-29 13:21:56	2026-07-31 13:32:08	2890
4	Vyazovetskov A.S. (alex_v)	6	245	181	2026-07-29 14:43:59	2026-07-30 18:38:40	1675
5	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		4970
6	Williams B. (BW)	35	67	308	2026-07-23 14:59:30	2026-07-29 13:19:06	8540
7	Sarkis'yan G. (gennadi_s)	15	176	203	2026-07-28 14:11:50	2026-07-28 15:38:56	87
8	Filippkin D.V. (_dimon_)	3	259	264	2026-07-23 15:54:45	2026-07-23 15:55:46	1
9	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04	2026-07-23 15:27:06	747609
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		13678
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		16446
12	Sarkis'yan G. (gennadi_s)	15	176	202	2026-07-19 14:34:28	2026-07-20 18:03:08	1649
13	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		66572
14	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		101001
15	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		121607
16	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		134666
17	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		144894
18	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		145736
19	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		176448
20	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		269675
21	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		345515
22	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		557218
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		791341
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		803530
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		951383
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		952691
27	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		975441
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1084980
29	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1197045
30	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1197045
31	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1226201
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1252722
33	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1266353
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1332396
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1335710
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1338099
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1370764
38	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1423027
39	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1447603
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1764181
41	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1868170
42	Koptel'tsev V. (selber)	19	132	237	2022-11-06 21:16:51		1964334
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2003543
44	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2120452
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2267034
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2518790
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2647142
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2781496
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2823683
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2827430
51	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3069496
52	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3136859
53	Koptel'tsev V. (selber)	19	132	259	2020-06-24 00:22:07		3211189
54	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3276143
55	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3284114
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3323629
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3347356
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3657745
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3685027
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3693089
61	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3711372
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3755451
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3895426
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3993694
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3996875
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4139066
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4199613
68	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4252972
69	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4300437
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4392504
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4396413
72	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4396491
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4419121
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4433278
75	F (uff)	65	25	95	2018-01-22 15:57:03		4483214
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4534883
77	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4572353
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4574114
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4575182
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4612897
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4640014
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4673077
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4749722
84	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4796266
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4800415
86	F (uff)	65	25	185	2017-06-01 10:27:49		4821943
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4861816
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4923707
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5158611
90	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5194084
91	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5273307
92	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5403643
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5445742
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5615162
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5646850
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5680849
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5690210
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5716057
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5730360
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5732046

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