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SQL exercises

May 01, 04:38 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: 15065

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	20	113	167	2025-04-12 13:06:32	2025-04-27 20:30:40	22044
2	Sarkis'yan G. (gennadi_s)	30	81	167	2025-04-27 13:52:39		5206
3	Sarkis'yan G. (gennadi_s)	30	81	165	2025-04-24 12:05:17	2025-04-25 11:36:46	1411
4	Sarkis'yan G. (gennadi_s)	30	81	164	2025-04-11 16:03:00	2025-04-18 15:01:09	10018
5	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		19686
6	Fomichev A.V. (Fomichev)	194	0	7	2025-02-25 02:16:37		93742
7	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		101840
8	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		132088
9	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		144277
10	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		292130
11	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		293438
12	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		316188
13	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		343628
14	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		425727
15	Slavutinskij V.V. (Vasilko)	444	0	5	2024-04-22 17:26:35		537792
16	Slavutinskij V.V. (Vasilko)	444	0	7	2024-04-22 17:26:21		537792
17	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		566948
18	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		593469
19	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		607100
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		673143
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		676457
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		678846
23	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		711511
24	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		756687
25	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		763774
26	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		788350
27	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1033382
28	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1070938
29	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1104928
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1208917
31	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1305081
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1344290
33	Lukov D.R. (Gendalf)	239	0	90	2022-07-21 11:18:50		1461199
34	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1607781
35	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1721830
36	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1859537
37	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1987889
38	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2122243
39	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2164430
40	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2168177
41	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2410243
42	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2477606
43	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2551936
44	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2616890
45	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2624861
46	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2664375
47	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2688103
48	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2998492
49	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3025774
50	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3033836
51	Kordyum A. (alko58)	222	0	12	2019-07-12 15:58:52		3052119
52	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3096198
53	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3236173
54	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3334441
55	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3337622
56	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3479813
57	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3540360
58	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3593719
59	Zyrin V.E. (Vezyr)	536	0	29	2018-05-29 14:14:19		3641184
60	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3733250
61	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3737160
62	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3737238
63	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3759868
64	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3774025
65	F (uff)	64	25	95	2018-01-22 15:57:03		3823961
66	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3875630
67	Kordyum A. (alko58)	222	0	101	2017-11-21 18:18:43		3913100
68	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3914861
69	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3915929
70	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3953644
71	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3980761
72	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		4013824
73	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4090469
74	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4137013
75	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4141162
76	F (uff)	64	25	185	2017-06-01 10:27:49		4162690
77	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4202563
78	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4264454
79	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4499358
80	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4534831
81	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4614054
82	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4744390
83	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4786489
84	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4955909
85	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4987597
86	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5021596
87	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		5030957
88	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5056803
89	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5071107
90	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5072793
91	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5084403
92	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5087974
93	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5091305
94	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5134990
95	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5136257
96	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5144819
97	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5154549
98	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5163176
99	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5393615
100	Skorohod I. (Dracul4ik)	77	15	252	2015-01-27 11:56:41		5395242

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