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SQL exercises

December 31, 03:20 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: 15375

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	33	73	215	2025-12-29 23:33:14	2025-12-30 01:24:17	111
2	Sarkis'yan G. (gennadi_s)	17	134	189	2025-12-25 14:50:28		7950
3	Koptel'tsev V. (selber)	21	116	149	2025-12-24 22:13:41		8947
4	Petrov Y. (YuriPetrov)	33	73	238	2025-12-21 01:40:19	2025-12-21 02:29:32	49
5	Petrov Y. (YuriPetrov)	33	73	235	2025-12-20 17:12:38	2025-12-20 17:59:08	47
6	Petrov Y. (YuriPetrov)	33	73	239	2025-12-20 00:52:23	2025-12-20 01:31:37	39
7	Petrov Y. (YuriPetrov)	33	73	236	2025-12-19 00:26:50	2025-12-19 01:32:46	66
8	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		37544
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		249248
10	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		370968
11	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		445024
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		453123
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		483371
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		495559
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		643412
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		644720
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		667471
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		694911
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		777009
20	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		889074
21	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		889074
22	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		918230
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		944751
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		958383
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1024425
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1027739
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1030129
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1062793
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1107969
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1115056
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1139633
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1384664
33	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1422220
34	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1456210
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1560199
36	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1656364
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1695572
38	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1812482
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1959063
40	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2210820
41	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2339171
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2473525
43	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2515712
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2519459
45	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2761525
46	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2828888
47	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2903218
48	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2968173
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2976143
50	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3015658
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3039385
52	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3349774
53	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3377056
54	Romanov K.Yu. (kostik)	308	0	12	2019-07-25 08:42:10		3385118
55	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3403402
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3447480
57	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3587455
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3685723
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3688904
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3831095
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3891642
62	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3945001
63	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3992466
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4084533
65	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4088442
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4088521
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4111150
68	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4125307
69	F (uff)	65	25	95	2018-01-22 15:57:03		4175244
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4226912
71	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4264382
72	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4266143
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4267211
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4304926
75	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4332043
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4365106
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4441751
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4488296
79	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4492445
80	F (uff)	65	25	185	2017-06-01 10:27:49		4513973
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4553846
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4615737
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4850640
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4886113
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4965336
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5095672
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5137771
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5307192
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5338879
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5372878
91	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5382240
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5408086
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5422390
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5424076
95	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5435685
96	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5439256
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5442587
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5486273
99	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5487540
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5496102

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