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SQL exercises

December 20, 11:23 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: 15310

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	34	67	239	2025-12-20 00:52:23	2025-12-20 01:31:37	39
2	Petrov Y. (YuriPetrov)	34	67	236	2025-12-19 00:26:50	2025-12-19 01:32:46	66
3	Kostomarov A.V. (al29)	5	247	88	2025-12-16 13:08:02	2025-12-16 14:28:09	80
4	Sarkis'yan G. (gennadi_s)	17	134	188	2025-11-30 13:49:15	2025-12-15 18:47:38	21898
5	Petrov Y. (YuriPetrov)	34	67	88	2025-12-10 15:24:13	2025-12-10 15:35:04	11
6	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14	2025-12-09 14:51:32	1572
7	Petrov Y. (YuriPetrov)	34	67	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
8	Petrov Y. (YuriPetrov)	34	67	5	2025-12-08 14:40:28	2025-12-08 15:14:01	34
9	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47	2025-12-08 10:54:29	4130
10	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		22187
11	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		233890
12	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		355610
13	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		429666
14	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		437765
15	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		468013
16	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		480202
17	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		628054
18	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		629362
19	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		652113
20	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		679553
21	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		761652
22	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		873717
23	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		873717
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		902873
25	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		929393
26	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		943025
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1009068
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1012381
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1014771
30	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1047436
31	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1092612
32	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1099699
33	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1124275
34	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1369307
35	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1406863
36	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1440853
37	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1544841
38	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1641006
39	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1680215
40	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1797124
41	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1943705
42	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2195462
43	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2323814
44	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2458168
45	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2500355
46	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2504102
47	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2746168
48	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2813531
49	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2887861
50	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2952815
51	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2960786
52	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3000300
53	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3024028
54	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3334417
55	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3361699
56	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3369761
57	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3388044
58	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3432123
59	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3572098
60	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3670366
61	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3673547
62	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3815738
63	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3876285
64	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3929644
65	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3977109
66	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4069175
67	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4073085
68	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4073163
69	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4095793
70	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4109950
71	F (uff)	65	25	95	2018-01-22 15:57:03		4159886
72	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4211554
73	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4249024
74	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4250786
75	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4251854
76	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4289569
77	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4316686
78	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4349749
79	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4426393
80	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4472938
81	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4477087
82	F (uff)	65	25	185	2017-06-01 10:27:49		4498615
83	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4538488
84	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4600379
85	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4835283
86	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4870756
87	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4949979
88	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5080314
89	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5122414
90	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5291834
91	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5323522
92	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5357521
93	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5366882
94	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5392728
95	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5407032
96	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5408718
97	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5420327
98	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5423899
99	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5427230
100	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5470915

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