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SQL exercises

December 21, 21:17 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: 15322

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	33	71	238	2025-12-21 01:40:19	2025-12-21 02:29:32	49
2	Petrov Y. (YuriPetrov)	33	71	235	2025-12-20 17:12:38	2025-12-20 17:59:08	47
3	Petrov Y. (YuriPetrov)	33	71	239	2025-12-20 00:52:23	2025-12-20 01:31:37	39
4	Petrov Y. (YuriPetrov)	33	71	236	2025-12-19 00:26:50	2025-12-19 01:32:46	66
5	Kostomarov A.V. (al29)	5	247	88	2025-12-16 13:08:02	2025-12-16 14:28:09	80
6	Sarkis'yan G. (gennadi_s)	17	134	188	2025-11-30 13:49:15	2025-12-15 18:47:38	21898
7	Petrov Y. (YuriPetrov)	33	71	88	2025-12-10 15:24:13	2025-12-10 15:35:04	11
8	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14	2025-12-09 14:51:32	1572
9	Petrov Y. (YuriPetrov)	33	71	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
10	Petrov Y. (YuriPetrov)	33	71	5	2025-12-08 14:40:28	2025-12-08 15:14:01	34
11	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47	2025-12-08 10:54:29	4130
12	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		24221
13	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		235925
14	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		357645
15	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		431701
16	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		439800
17	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		470048
18	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		482236
19	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		630089
20	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		631397
21	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		654148
22	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		681588
23	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		763686
24	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		875751
25	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		875751
26	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		904907
27	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		931428
28	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		945060
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1011102
30	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1014416
31	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1016806
32	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1049470
33	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1094646
34	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1101733
35	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1126310
36	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1371341
37	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1408897
38	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1442887
39	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1546876
40	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1643041
41	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1682249
42	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1799159
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1945740
44	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2197497
45	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2325848
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2460202
47	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2502389
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2506136
49	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2748202
50	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2815565
51	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2889895
52	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2954850
53	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2962820
54	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3002335
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3026062
56	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3336451
57	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3363733
58	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3371795
59	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3390079
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3434157
61	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3574132
62	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3672400
63	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3675581
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3817772
65	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3878319
66	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3931678
67	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3979143
68	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4071210
69	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4075119
70	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4075198
71	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4097827
72	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4111984
73	F (uff)	65	25	95	2018-01-22 15:57:03		4161921
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4213589
75	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4251059
76	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4252820
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4253888
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4291603
79	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4318720
80	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4351783
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4428428
82	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4474973
83	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4479122
84	F (uff)	65	25	185	2017-06-01 10:27:49		4500650
85	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4540523
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4602414
87	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4837317
88	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4872790
89	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4952013
90	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5082349
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5124448
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5293869
93	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5325556
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5359555
95	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5368917
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5394763
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5409067
98	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5410753
99	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5422362
100	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5425933

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