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SQL exercises

May 28, 01:29 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	Vyazovetskov A.S. (alex_v)	9	229	216	2026-05-26 11:29:01	2026-05-27 11:29:15	1440
2	Vyazovetskov A.S. (alex_v)	9	229	155	2026-05-22 11:18:23	2026-05-25 14:49:10	4531
3	Varenikov D.M. (Dmitriy Varenikov)	20	128	303	2026-05-23 22:21:57		5948
4	Chernov D.V. (Kursist)	2	262	303	2026-05-23 20:49:50		6040
5	Koptel'tsev V. (selber)	19	129	303	2026-05-23 20:23:43		6066
6	Krasovskij E.A. (pegoopik)	1	262	303	2026-05-23 15:29:26	2026-05-23 19:54:13	265
7	Makarov I.A. (_Bkmz_)	56	32	195	2026-05-23 10:27:06	2026-05-23 15:11:29	284
8	Sarkis'yan G. (gennadi_s)	15	170	303	2026-05-23 13:24:38	2026-05-23 13:24:42	0
9	Filippkin D.V. (_dimon_)	3	259	24	2026-05-21 10:12:47	2026-05-21 10:19:45	7
10	Vyazovetskov A.S. (alex_v)	9	229	230	2026-05-18 12:59:52	2026-05-20 15:56:52	3057
11	Makarov I.A. (_Bkmz_)	56	32	24	2026-05-16 11:11:27	2026-05-16 11:27:42	16
12	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		18004
13	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		26646
14	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		39705
15	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		49933
16	Vyazovetskov A.S. (alex_v)	9	229	264	2026-04-22 19:15:17		50775
17	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		81486
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		174714
19	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		250554
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		462257
21	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		583977
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		666132
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		696380
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		708568
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		856421
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		857729
27	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		880480
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		990019
29	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1102083
30	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1102084
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1131239
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1157760
33	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1171392
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1237434
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1240748
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1243138
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1275803
38	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1328065
39	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1352642
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1669219
41	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1773208
42	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1869373
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1908582
44	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2025491
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2172072
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2423829
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2552181
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2686535
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2728721
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2732469
51	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		2974535
52	Samarin A. (not.yet.sql.master)	145	0	112	2020-08-14 15:12:10		3041898
53	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3116228
54	Samarin A. (not.yet.sql.master)	145	0	138	2020-05-09 21:48:04		3181182
55	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3189152
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3228667
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3252394
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3562784
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3590066
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3598128
61	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3616411
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3660490
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3800465
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3898732
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3901913
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4044104
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4104652
68	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4158011
69	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4205476
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4297542
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4301451
72	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4301530
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4324160
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4338316
75	F (uff)	65	25	95	2018-01-22 15:57:03		4388253
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4439921
77	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4477391
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4479152
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4480221
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4517936
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4545052
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4578115
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4654760
84	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4701305
85	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4705454
86	F (uff)	65	25	185	2017-06-01 10:27:49		4726982
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4766855
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4828746
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5063650
90	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5099123
91	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5178346
92	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5308681
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5350780
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5520201
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5551889
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5585887
97	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5595249
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5621095
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5635399
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5637085

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