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SQL exercises

June 28, 16:07 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: 15114

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		17129
4	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		51558
5	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		51584
6	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		72163
7	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		85222
8	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		95450
9	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		96292
10	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		127004
11	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		220231
12	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		296071
13	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		507775
14	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		711649
15	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		741898
16	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		754086
17	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		901939
18	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		903247
19	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		925998
20	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1035536
21	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1147601
22	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1147601
23	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1176757
24	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1203278
25	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1216910
26	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1282952
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1286266
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1288655
29	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1321320
30	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1373583
31	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1398160
32	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1714737
33	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1818726
34	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1914891
35	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1954099
36	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2071009
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2217590
38	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2469347
39	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2597698
40	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2732052
41	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2774239
42	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2777986
43	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3020052
44	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3087415
45	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3161745
46	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3226699
47	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3234670
48	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3274185
49	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3297912
50	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3608301
51	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3635583
52	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3643645
53	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3661929
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3706007
55	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3845982
56	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3944250
57	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3947431
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4089622
59	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4150169
60	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4203528
61	Zyrin V.E. (Vezyr)	550	0	29	2018-05-29 14:14:19		4250993
62	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4343060
63	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4346969
64	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4347048
65	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4369677
66	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4383834
67	F (uff)	65	25	95	2018-01-22 15:57:03		4433770
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4485439
69	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4522909
70	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4524670
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4525738
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4563453
73	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4590570
74	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4623633
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4700278
76	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4746823
77	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4750972
78	F (uff)	65	25	185	2017-06-01 10:27:49		4772500
79	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4812373
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4874264
81	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5109167
82	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5144640
83	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5223863
84	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5354199
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5396298
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5565719
87	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5597406
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5631405
89	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5640766
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5666613
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5680917
92	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5682603
93	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5694212
94	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5697783
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5701114
96	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5744800
97	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5746067
98	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5754628
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5764359
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5772985

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