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SQL exercises

October 07, 00:32 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: 15175

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	Koptel'tsev V. (selber)	21	116	240	2025-09-08 22:07:14	2025-09-24 08:05:14	22198
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		126680
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		248400
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		322456
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		330555
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		360803
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		372992
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		520844
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		522152
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		544903
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		572343
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		654442
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		766506
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		766507
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		795663
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		822183
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		835815
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		901857
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		905171
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		907561
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		940226
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		985402
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		992488
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1017065
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1262097
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1299653
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1333643
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1437631
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1533796
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1573005
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1689914
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1836495
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1950545
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2088252
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2216604
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2350958
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2393144
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2396892
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2638958
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2706321
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2780651
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2845605
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2853576
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2893090
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2916817
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3227207
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3254489
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3262551
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3280834
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3324913
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3464888
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3563156
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3566337
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3708528
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3769075
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3822434
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3869899
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3961965
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3965874
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3965953
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3988583
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4002739
64	F (uff)	65	25	95	2018-01-22 15:57:03		4052676
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4104344
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4141814
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4143575
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4144644
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4182359
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4209476
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4242538
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4319183
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4365728
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4369877
75	F (uff)	65	25	185	2017-06-01 10:27:49		4391405
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4431278
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4493169
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4728073
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4763546
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4842769
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4973104
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5015203
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5184624
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5216312
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5250311
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5259672
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5285518
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5299822
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5301508
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5313117
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5316688
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5320020
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5363705
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5364972
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5373534
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5383264
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5391891
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5622330
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5623956
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5672117

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