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SQL exercises

January 13, 03:21 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: 15331

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	16	142	190	2026-01-11 13:55:22	2026-01-12 11:21:39	1286
2	Sarkis'yan G. (gennadi_s)	16	142	189	2025-12-25 14:50:28	2026-01-05 12:53:05	15723
3	Petrov Y. (YuriPetrov)	32	76	233	2026-01-03 02:07:30	2026-01-05 04:08:29	3001
4	Koptel'tsev V. (selber)	21	119	149	2025-12-24 22:13:41	2026-01-04 12:09:17	15236
5	Petrov Y. (YuriPetrov)	32	76	219	2025-12-31 15:27:52	2025-12-31 20:05:34	278
6	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		56265
7	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		267968
8	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		389688
9	Fomichev A.V. (Fomichev)	198	0	7	2025-02-25 02:16:37		463744
10	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		471843
11	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		502091
12	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		514280
13	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		662132
14	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		663440
15	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		686191
16	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		713631
17	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		795730
18	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		907794
19	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		907795
20	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		936951
21	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		963471
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		977103
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1043146
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1046459
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1048849
26	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1081514
27	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1126690
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1133776
29	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1158353
30	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1403385
31	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1440941
32	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1474931
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1578919
34	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1675084
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1714293
36	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1831202
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1977783
38	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2229540
39	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2357892
40	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2492246
41	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2534432
42	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2538180
43	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2780246
44	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2847609
45	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2921939
46	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2986893
47	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2994864
48	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3034378
49	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3058105
50	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3368495
51	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3395777
52	Romanov K.Yu. (kostik)	308	0	12	2019-07-25 08:42:10		3403839
53	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3422122
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3466201
55	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3606176
56	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3704444
57	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3707625
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3849816
59	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3910363
60	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3963722
61	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		4011187
62	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4103253
63	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4107162
64	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4107241
65	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4129871
66	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4144028
67	F (uff)	65	25	95	2018-01-22 15:57:03		4193964
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4245632
69	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4283102
70	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4284864
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4285932
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4323647
73	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4350764
74	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4383826
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4460471
76	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4507016
77	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4511165
78	F (uff)	65	25	185	2017-06-01 10:27:49		4532693
79	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4572566
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4634457
81	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4869361
82	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4904834
83	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4984057
84	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5114392
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5156492
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5325912
87	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5357600
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5391599
89	Fomichev A.V. (Fomichev)	198	0	101	2015-10-07 11:21:04		5400960
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5426806
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5441110
92	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5442796
93	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5454405
94	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5457977
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5461308
96	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5504993
97	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5506260
98	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5514822
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5524552
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5533179

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