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SQL exercises

April 08, 13:49 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: 15066

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
2	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
3	Polyakov V.M. (rock_4)	116	6	146	2026-04-06 15:53:06		2757
4	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
5	Sarkis'yan G. (gennadi_s)	15	159	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
6	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
7	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
8	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
9	Sarkis'yan G. (gennadi_s)	15	159	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
10	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
11	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		10226
12	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
13	Polyakov V.M. (rock_4)	116	6	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
14	Sarkis'yan G. (gennadi_s)	15	159	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
15	Polyakov V.M. (rock_4)	116	6	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
16	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		103454
17	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		179294
18	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		390997
19	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		512717
20	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		594872
21	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		625120
22	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		637308
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		785161
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		786469
25	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		809220
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		918759
27	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1030823
28	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1030824
29	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1059979
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1086500
31	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1100132
32	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1166174
33	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1169488
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1171878
35	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1204543
36	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1256805
37	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1281382
38	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1597959
39	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1701948
40	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1798113
41	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1837322
42	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1954231
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2100812
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2352569
45	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2480921
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2615275
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2657461
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2661209
49	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2903275
50	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2970638
51	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3044968
52	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3109922
53	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3117892
54	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3157407
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3181134
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3491524
57	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3518806
58	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3526868
59	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3545151
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3589230
61	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3729205
62	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3827472
63	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3830653
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3972844
65	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4033391
66	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4086751
67	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4134216
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4226282
69	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4230191
70	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4230270
71	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4252900
72	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4267056
73	F (uff)	65	25	95	2018-01-22 15:57:03		4316993
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4368661
75	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4406131
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4407892
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4408961
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4446676
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4473792
80	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4506855
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4583500
82	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4630045
83	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4634194
84	F (uff)	65	25	185	2017-06-01 10:27:49		4655722
85	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4695595
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4757486
87	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4992390
88	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5027862
89	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5107086
90	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5237421
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5279520
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5448941
93	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5480629
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5514627
95	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5523989
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5549835
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5564139
98	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5565825
99	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5577434
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5581005

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