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SQL exercises

October 10, 16:58 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: 15191

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		131985
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		253706
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		327762
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		335860
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		366108
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		378297
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		526149
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		527458
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		550208
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		577648
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		659747
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		771812
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		771812
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		800968
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		827488
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		841120
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		907163
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		910476
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		912866
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		945531
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		990707
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		997794
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1022370
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1267402
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1304958
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1338948
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1442936
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1539101
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1578310
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1695219
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1841800
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1955850
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2093557
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2221909
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2356263
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2398450
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2402197
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2644263
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2711626
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2785956
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2850910
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2858881
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2898395
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2922123
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3232512
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3259794
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3267856
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3286139
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3330218
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3470193
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3568461
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3571642
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3713833
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3774380
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3827739
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3875204
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3967270
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3971180
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3971258
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3993888
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4008045
63	F (uff)	65	25	95	2018-01-22 15:57:03		4057981
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4109649
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4147119
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4148881
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4149949
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4187664
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4214781
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4247844
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4324489
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4371033
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4375182
74	F (uff)	65	25	185	2017-06-01 10:27:49		4396710
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4436583
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4498474
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4733378
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4768851
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4848074
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4978409
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5020509
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5189929
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5221617
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5255616
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5264977
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5290823
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5305127
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5306813
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5318423
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5321994
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5325325
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5369010
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5370277
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5378839
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5388569
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5397196
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5627635
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5629261
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5677422
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5705582

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