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SQL exercises

August 28, 19:39 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: 15150

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		358
2	Sarkis'yan G. (gennadi_s)	14	184	206	2026-08-15 14:26:50	2026-08-21 15:41:57	8715
3	Frolov K.A. (Murderface_)	135	0	24	2026-08-21 11:04:04	2026-08-21 11:17:39	14
4	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		10867
5	Komarov A.N. (Shveda Saulya)	35	68	160	2026-05-09 13:24:21	2026-08-20 17:24:55	148561
6	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		40686
7	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		43578
8	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		52286
9	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		55054
10	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		105181
11	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		139610
12	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		173274
13	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		183502
14	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		184344
15	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		215056
16	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		308283
17	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		384123
18	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		595827
19	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		829950
20	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		842138
21	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		989991
22	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		991299
23	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1014050
24	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1123588
25	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1235653
26	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1235653
27	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1264809
28	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1291330
29	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1304962
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1371004
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1374318
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1376707
33	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1409372
34	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1461635
35	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1486212
36	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1802789
37	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1906778
38	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2002943
39	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2042151
40	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2159061
41	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2305642
42	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2557398
43	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2685750
44	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2820104
45	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2862291
46	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2866038
47	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3108104
48	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3175467
49	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3249797
50	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3314751
51	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3322722
52	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3362237
53	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3385964
54	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3696353
55	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3723635
56	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3731697
57	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3749981
58	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3794059
59	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3934034
60	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4032302
61	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4035483
62	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4177674
63	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4238221
64	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4291580
65	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4339045
66	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4431112
67	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4435021
68	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4435100
69	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4457729
70	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4471886
71	F (uff)	65	25	95	2018-01-22 15:57:03		4521822
72	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4573491
73	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4610961
74	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4612722
75	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4613790
76	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4651505
77	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4678622
78	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4711685
79	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4788330
80	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4834875
81	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4839024
82	F (uff)	65	25	185	2017-06-01 10:27:49		4860552
83	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4900425
84	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4962316
85	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5197219
86	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5232692
87	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5311915
88	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5442251
89	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5484350
90	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5653771
91	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5685458
92	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5719457
93	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5728818
94	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5754665
95	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5768969
96	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5770655
97	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5782264
98	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5785835
99	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5789166
100	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5832852

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