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SQL exercises

May 12, 22:27 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: 15086

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Vyazovetskov A.S. (alex_v)	11	218	225	2026-05-12 11:55:53	2026-05-12 16:20:41	265
2	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		4863
3	Vyazovetskov A.S. (alex_v)	11	218	217	2026-05-08 10:20:20	2026-05-08 13:08:42	168
4	Vyazovetskov A.S. (alex_v)	11	218	232	2026-05-07 10:40:43	2026-05-07 16:36:28	356
5	Sarkis'yan G. (gennadi_s)	15	170	201	2026-05-06 17:02:11	2026-05-06 21:59:40	297
6	Vyazovetskov A.S. (alex_v)	11	218	160	2026-05-06 10:59:16	2026-05-06 17:58:52	420
7	Vyazovetskov A.S. (alex_v)	11	218	233	2026-05-05 16:32:39	2026-05-05 21:01:23	269
8	Koptel'tsev V. (selber)	19	129	147	2026-04-27 19:09:38	2026-05-05 18:01:02	11451
9	Varenikov D.M. (Dmitriy Varenikov)	20	128	24	2026-05-03 22:31:13	2026-05-03 22:51:54	21
10	Karasyova N.V. (vlksm)	9	225	24	2026-05-01 17:08:12	2026-05-01 17:42:21	34
11	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		17922
12	Sarkis'yan G. (gennadi_s)	15	170	200	2026-04-27 16:55:45	2026-04-29 19:00:00	3004
13	Polyakov V.M. (rock_4)	76	15	152	2026-04-16 13:35:42	2026-04-29 17:07:29	18932
14	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		28150
15	Vyazovetskov A.S. (alex_v)	11	218	264	2026-04-22 19:15:17		28992
16	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		59704
17	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		152931
18	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		228771
19	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		440474
20	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		562195
21	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		644349
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		674597
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		686786
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		834639
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		835947
26	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		858697
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		968236
28	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1080301
29	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1080301
30	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1109457
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1135978
32	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1149609
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1215652
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1218966
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1221355
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1254020
37	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1306283
38	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1330859
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1647437
40	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1751426
41	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1847590
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1886799
43	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2003708
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2150290
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2402046
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2530398
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2664752
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2706939
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2710686
50	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		2952752
51	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		3020115
52	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3094445
53	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3159399
54	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3167370
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3206884
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3230612
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3541001
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3568283
59	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3576345
60	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3594628
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3638707
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3778682
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3876950
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3880131
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4022322
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4082869
67	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4136228
68	Zyrin V.E. (Vezyr)	548	0	29	2018-05-29 14:14:19		4183693
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4275760
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4279669
71	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4279747
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4302377
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4316534
74	F (uff)	65	25	95	2018-01-22 15:57:03		4366470
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4418139
76	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4455609
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4457370
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4458438
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4496153
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4523270
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4556333
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4632978
83	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4679522
84	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4683671
85	F (uff)	65	25	185	2017-06-01 10:27:49		4705199
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4745072
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4806963
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5041867
89	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5077340
90	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5156563
91	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5286899
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5328998
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5498418
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5530106
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5564105
96	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5573466
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5599312
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5613616
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5615302
100	Varenikov D.M. (Dmitriy Varenikov)	20	128	263	2015-08-31 08:35:37		5626912

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