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SQL exercises

June 25, 19:51 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: 15127

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Williams B. (BW)	35	66	262	2025-04-17 12:32:37	2026-06-24 13:25:33	623573
2	Williams B. (BW)	35	66	24	2026-05-15 13:25:32	2026-06-22 22:34:12	55269
3	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		13033
4	Makarov I.A. (_Bkmz_)	49	40	143	2026-06-12 10:09:54	2026-06-13 03:07:28	1018
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		47462
6	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		47488
7	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		68067
8	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		81127
9	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		91355
10	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		92197
11	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		122908
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		216136
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		291975
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		503679
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		707554
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		737802
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		749990
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		897843
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		899151
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		921902
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1031440
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1143505
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1143505
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1172661
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1199182
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1212814
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1278856
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1282170
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1284560
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1317225
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1369487
32	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1394064
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1710641
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1814630
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1910795
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1950003
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2066913
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2213494
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2465251
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2593603
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2727957
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2770143
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2773891
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3015957
45	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3083320
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3157650
47	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3222604
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3230574
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3270089
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3293816
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3604206
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3631488
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3639550
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3657833
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3701911
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3841887
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3940154
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3943335
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4085526
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4146073
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4199433
62	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4246897
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4338964
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4342873
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4342952
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4365581
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4379738
68	F (uff)	65	25	95	2018-01-22 15:57:03		4429675
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4481343
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4518813
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4520574
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4521643
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4559357
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4586474
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4619537
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4696182
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4742727
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4746876
79	F (uff)	65	25	185	2017-06-01 10:27:49		4768404
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4808277
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4870168
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5105072
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5140544
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5219768
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5350103
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5392202
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5561623
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5593310
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5627309
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5636671
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5662517
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5676821
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5678507
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5690116
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5693687
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5697018
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5740704
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5741971
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5750533
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5760263

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