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SQL exercises

December 06, 02:36 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: 15266

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47		752
2	Lukov D.R. (Gendalf)	241	0	32	2025-12-05 01:36:21		1500
3	Sarkis'yan G. (gennadi_s)	18	131	188	2025-11-30 13:49:15		7967
4	Sarkis'yan G. (gennadi_s)	18	131	187	2025-11-21 15:27:25	2025-11-25 14:09:56	5683
5	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		213203
6	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		334924
7	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		408980
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		417078
9	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		447326
10	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		459515
11	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		607368
12	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		608676
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		631426
14	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		658867
15	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		740965
16	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		853030
17	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		853030
18	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		882186
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		908707
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		922339
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		988381
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		991695
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		994084
24	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1026749
25	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1071925
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1079012
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1103588
28	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1348620
29	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1386176
30	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1420166
31	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1524155
32	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1620320
33	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1659528
34	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1776438
35	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1923019
36	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2174775
37	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2303127
38	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2437481
39	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2479668
40	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2483415
41	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2725481
42	Samarin A. (not.yet.sql.master)	143	0	112	2020-08-14 15:12:10		2792844
43	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2867174
44	Samarin A. (not.yet.sql.master)	143	0	138	2020-05-09 21:48:04		2932128
45	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2940099
46	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2979614
47	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		3003341
48	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3313730
49	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3341012
50	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3349074
51	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3367358
52	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3411436
53	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3551411
54	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3649679
55	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3652860
56	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3795051
57	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3855598
58	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3908957
59	Zyrin V.E. (Vezyr)	539	0	29	2018-05-29 14:14:19		3956422
60	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4048489
61	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4052398
62	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4052477
63	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4075106
64	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4089263
65	F (uff)	65	25	95	2018-01-22 15:57:03		4139199
66	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4190868
67	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4228338
68	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4230099
69	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4231167
70	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4268882
71	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4295999
72	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4329062
73	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4405707
74	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4452251
75	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4456401
76	F (uff)	65	25	185	2017-06-01 10:27:49		4477929
77	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4517802
78	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4579693
79	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4814596
80	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4850069
81	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4929292
82	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5059628
83	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5101727
84	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5271148
85	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5302835
86	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5336834
87	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5346195
88	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5372042
89	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5386346
90	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5388031
91	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5399641
92	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5403212
93	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5406543
94	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5450229
95	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5451496
96	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5460057
97	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5469787
98	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5478414
99	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5708853
100	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5710480

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