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SQL exercises

June 16, 05:01 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		33612
8	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		33638
9	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		45576
10	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		54217
11	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		67277
12	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		77504
13	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		78346
14	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		109058
15	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		202286
16	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		278125
17	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		489829
18	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		611549
19	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		693704
20	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		723952
21	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		736140
22	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		883993
23	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		885301
24	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		908052
25	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1017590
26	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1129655
27	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1129655
28	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1158811
29	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1185332
30	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1198964
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1265006
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1268320
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1270710
34	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1303375
35	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1355637
36	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1380214
37	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1696791
38	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1800780
39	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1896945
40	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1936153
41	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2053063
42	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2199644
43	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2451401
44	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2579753
45	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2714107
46	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2756293
47	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2760041
48	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3002107
49	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3069470
50	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3143800
51	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3208754
52	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3216724
53	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3256239
54	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3279966
55	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3590355
56	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3617638
57	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3625700
58	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3643983
59	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3688061
60	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3828036
61	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3926304
62	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3929485
63	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4071676
64	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4132223
65	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4185582
66	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4233047
67	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4325114
68	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4329023
69	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4329102
70	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4351731
71	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4365888
72	F (uff)	65	25	95	2018-01-22 15:57:03		4415825
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4467493
74	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4504963
75	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4506724
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4507792
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4545507
78	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4572624
79	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4605687
80	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4682332
81	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4728877
82	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4733026
83	F (uff)	65	25	185	2017-06-01 10:27:49		4754554
84	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4794427
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4856318
86	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5091221
87	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5126694
88	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5205918
89	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5336253
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5378352
91	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5547773
92	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5579460
93	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5613459
94	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5622821
95	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5648667
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5662971
97	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5664657
98	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5676266
99	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5679837
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5683168

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