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SQL exercises

April 10, 05:20 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: 15076

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		5128
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		12597
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	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		105825
16	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		181665
17	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		393368
18	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		515088
19	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		597243
20	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		627491
21	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		639679
22	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		787532
23	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		788840
24	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		811591
25	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		921129
26	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1033194
27	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1033195
28	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1062350
29	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1088871
30	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1102503
31	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1168545
32	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1171859
33	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1174249
34	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1206914
35	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1259176
36	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1283753
37	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1600330
38	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1704319
39	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1800484
40	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1839693
41	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1956602
42	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2103183
43	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2354940
44	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2483292
45	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2617646
46	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2659832
47	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2663580
48	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2905646
49	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2973009
50	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3047339
51	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3112293
52	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3120263
53	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3159778
54	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3183505
55	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3493895
56	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3521177
57	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3529239
58	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3547522
59	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3591601
60	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3731576
61	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3829843
62	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3833024
63	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3975215
64	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4035762
65	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4089122
66	Zyrin V.E. (Vezyr)	545	0	29	2018-05-29 14:14:19		4136587
67	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4228653
68	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4232562
69	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4232641
70	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4255271
71	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4269427
72	F (uff)	65	25	95	2018-01-22 15:57:03		4319364
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4371032
74	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4408502
75	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4410263
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4411332
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4449047
78	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4476163
79	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4509226
80	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4585871
81	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4632416
82	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4636565
83	F (uff)	65	25	185	2017-06-01 10:27:49		4658093
84	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4697966
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4759857
86	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4994761
87	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5030233
88	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5109457
89	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5239792
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5281891
91	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5451312
92	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5483000
93	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5516998
94	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5526360
95	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5552206
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5566510
97	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5568196
98	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5579805
99	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5583376
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5586707

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