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SQL exercises

September 25, 19:27 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: 13869

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	19	133	53	2026-09-20 05:35:11	2026-09-23 22:59:05	5364
2	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31		3189
3	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12	2026-09-19 18:45:38	1495
4	Krasovskij E.A. (pegoopik)	1	266	53	2026-09-18 15:39:39	2026-09-18 15:39:44	0
5	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		26597
6	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		40666
7	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		51175
8	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		80994
9	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		83887
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		92595
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		95363
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		145489
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		179918
14	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		213583
15	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		223811
16	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		224653
17	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		255364
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		348592
19	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		424432
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		636135
21	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		870258
22	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		882446
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1030299
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1031607
25	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1054358
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1163897
27	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1275961
28	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1275962
29	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1305117
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1331638
31	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1345270
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1411312
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1414626
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1417016
35	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1449681
36	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1501943
37	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1526520
38	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1843098
39	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1947086
40	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2043251
41	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2082460
42	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2199369
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2345950
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2597707
45	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2726059
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2860413
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2902599
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2906347
49	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3148413
50	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3215776
51	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3290106
52	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3355060
53	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3363031
54	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3402545
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3426272
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3736662
57	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3763944
58	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3772006
59	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3790289
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3834368
61	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3974343
62	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4072611
63	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4075792
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4217982
65	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4278530
66	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4331889
67	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4379354
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4471420
69	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4475329
70	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4475408
71	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4498038
72	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4512194
73	F (uff)	65	25	95	2018-01-22 15:57:03		4562131
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4613799
75	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4651269
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4653030
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4654099
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4691814
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4718931
80	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4751993
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4828638
82	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4875183
83	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4879332
84	F (uff)	65	25	185	2017-06-01 10:27:49		4900860
85	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4940733
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5002624
87	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5237528
88	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5273001
89	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5352224
90	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5482559
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5524658
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5694079
93	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5725767
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5759766
95	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5769127
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5794973
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5809277
98	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5810963
99	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5822572
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5826143

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