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SQL exercises

August 28, 17:43 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: 15159

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		242
2	Sarkis'yan G. (gennadi_s)	14	184	206	2026-08-15 14:26:50	2026-08-21 15:41:57	8715
3	Frolov K.A. (Murderface_)	135	0	24	2026-08-21 11:04:04	2026-08-21 11:17:39	14
4	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		10751
5	Komarov A.N. (Shveda Saulya)	35	68	160	2026-05-09 13:24:21	2026-08-20 17:24:55	148561
6	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		40570
7	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		43462
8	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		52171
9	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		54939
10	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		105065
11	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		139494
12	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		173159
13	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		183387
14	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		184229
15	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		214940
16	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		308168
17	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		384007
18	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		595711
19	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		829834
20	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		842022
21	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		989875
22	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		991183
23	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1013934
24	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1123472
25	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1235537
26	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1235537
27	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1264693
28	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1291214
29	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1304846
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1370888
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1374202
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1376592
33	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1409257
34	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1461519
35	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1486096
36	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1802673
37	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1906662
38	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2002827
39	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2042036
40	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2158945
41	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2305526
42	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2557283
43	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2685635
44	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2819989
45	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2862175
46	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2865923
47	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3107989
48	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3175352
49	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3249682
50	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3314636
51	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3322606
52	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3362121
53	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3385848
54	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3696238
55	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3723520
56	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3731582
57	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3749865
58	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3793943
59	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3933919
60	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4032186
61	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4035367
62	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4177558
63	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4238105
64	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4291465
65	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4338930
66	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4430996
67	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4434905
68	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4434984
69	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4457613
70	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4471770
71	F (uff)	65	25	95	2018-01-22 15:57:03		4521707
72	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4573375
73	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4610845
74	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4612606
75	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4613675
76	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4651389
77	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4678506
78	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4711569
79	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4788214
80	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4834759
81	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4838908
82	F (uff)	65	25	185	2017-06-01 10:27:49		4860436
83	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4900309
84	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4962200
85	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5197104
86	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5232576
87	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5311800
88	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5442135
89	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5484234
90	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5653655
91	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5685343
92	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5719341
93	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5728703
94	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5754549
95	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5768853
96	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5770539
97	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5782148
98	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5785719
99	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5789050
100	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5832736

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