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SQL exercises

October 09, 04:34 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: 15183

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		129801
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		251522
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		325578
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		333676
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		363924
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		376113
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		523966
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		525274
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		548024
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		575464
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		657563
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		769628
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		769628
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		798784
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		825305
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		838936
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		904979
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		908293
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		910682
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		943347
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		988523
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		995610
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1020186
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1265218
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1302774
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1336764
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1440753
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1536917
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1576126
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1693035
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1839617
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1953666
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2091373
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2219725
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2354079
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2396266
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2400013
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2642079
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2709442
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2783772
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2848726
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2856697
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2896211
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2919939
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3230328
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3257610
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3265672
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3283955
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3328034
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3468009
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3566277
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3569458
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3711649
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3772196
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3825555
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3873020
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3965086
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3968996
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3969074
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3991704
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4005861
63	F (uff)	65	25	95	2018-01-22 15:57:03		4055797
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4107466
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4144935
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4146697
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4147765
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4185480
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4212597
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4245660
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4322305
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4368849
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4372998
74	F (uff)	65	25	185	2017-06-01 10:27:49		4394526
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4434399
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4496290
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4731194
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4766667
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4845890
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4976225
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5018325
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5187745
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5219433
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5253432
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5262793
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5288639
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5302943
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5304629
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5316239
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5319810
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5323141
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5366826
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5368093
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5376655
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5386385
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5395012
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5625451
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5627078
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5675238
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5703398

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