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SQL exercises

June 16, 10:56 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: 15111

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Makarov I.A. (_Bkmz_)	49	40	143	2026-06-12 10:09:54	2026-06-13 03:07:28	1018
2	Suprun D. (TimonSP)	77	15	24	2026-06-06 13:08:47	2026-06-06 13:25:05	16
3	Makarov I.A. (_Bkmz_)	49	40	168	2026-06-06 10:14:03	2026-06-06 11:42:23	88
4	Varenikov D.M. (Dmitriy Varenikov)	20	129	241	2026-05-23 22:21:57	2026-06-05 18:53:52	18512
5	Vyazovetskov A.S. (alex_v)	7	241	163	2026-06-04 13:05:06	2026-06-05 15:49:57	1605
6	Vyazovetskov A.S. (alex_v)	7	241	234	2026-06-02 18:21:50	2026-06-03 17:04:09	1362
7	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		33967
8	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		33993
9	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		45931
10	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		54572
11	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		67631
12	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		77859
13	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		78701
14	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		109413
15	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		202640
16	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		278480
17	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		490184
18	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		611904
19	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		694059
20	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		724307
21	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		736495
22	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		884348
23	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		885656
24	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		908407
25	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1017945
26	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1130010
27	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1130010
28	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1159166
29	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1185687
30	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1199319
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1265361
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1268675
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1271065
34	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1303729
35	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1355992
36	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1380569
37	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1697146
38	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1801135
39	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1897300
40	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1936508
41	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2053418
42	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2199999
43	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2451756
44	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2580108
45	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2714461
46	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2756648
47	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2760395
48	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3002461
49	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3069824
50	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3144154
51	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3209109
52	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3217079
53	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3256594
54	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3280321
55	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3590710
56	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3617992
57	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3626054
58	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3644338
59	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3688416
60	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3828391
61	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3926659
62	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3929840
63	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4072031
64	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4132578
65	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4185937
66	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4233402
67	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4325469
68	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4329378
69	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4329457
70	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4352086
71	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4366243
72	F (uff)	65	25	95	2018-01-22 15:57:03		4416180
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4467848
74	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4505318
75	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4507079
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4508147
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4545862
78	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4572979
79	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4606042
80	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4682687
81	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4729232
82	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4733381
83	F (uff)	65	25	185	2017-06-01 10:27:49		4754909
84	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4794782
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4856673
86	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5091576
87	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5127049
88	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5206272
89	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5336608
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5378707
91	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5548128
92	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5579815
93	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5613814
94	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5623176
95	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5649022
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5663326
97	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5665012
98	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5676621
99	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5680192
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5683523

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