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SQL exercises

September 15, 06:26 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: 14730

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	69	22	145	2024-09-14 15:29:30		897
2	Sarkis'yan G. (gennadi_s)	69	22	144	2024-09-09 11:12:22	2024-09-13 14:40:12	5968
3	Sarkis'yan G. (gennadi_s)	69	22	148	2024-09-07 11:13:55	2024-09-08 15:36:50	1703
4	Komarov A.N. (Shveda Saulya)	44	49	157	2024-09-04 13:29:47		15417
5	Mityurin V. (mitvol)	131	0	137	2024-09-02 15:22:37	2024-09-03 10:21:47	1139
6	Koptel'tsev V. (selber)	24	97	165	2024-09-01 11:14:57	2024-09-03 06:46:30	2612
7	Komarov A.N. (Shveda Saulya)	44	49	156	2024-08-30 18:57:21	2024-09-02 00:50:25	3233
8	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		97515
9	Slavutinskij V.V. (Vasilko)	430	0	5	2024-04-22 17:26:35		209580
10	Slavutinskij V.V. (Vasilko)	430	0	7	2024-04-22 17:26:21		209580
11	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		238736
12	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		265257
13	Latyntsev N.G. (aks_nsk)	52	37	253	2024-03-05 14:17:51		278889
14	Kurbanoff N.I. (Nariman Kurbanoff)	97	9	305	2024-01-19 17:35:31		344931
15	Kurbanoff N.I. (Nariman Kurbanoff)	97	9	306	2024-01-17 10:21:39		348245
16	Kurbanoff N.I. (Nariman Kurbanoff)	97	9	71	2024-01-15 18:32:03		350635
17	Nikolaenko A.V. (Shadow77)	81	14	135	2023-12-24 02:07:10		383300
18	Komarov A.N. (Shveda Saulya)	44	49	150	2023-11-22 17:11:28		428475
19	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		435562
20	Rudikov E. (cubie)	133	0	138	2023-10-31 17:27:54		460139
21	Komarov A.N. (Shveda Saulya)	44	49	149	2023-05-14 13:36:07		705171
22	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		742726
23	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		776716
24	Latyntsev N.G. (aks_nsk)	52	37	255	2023-01-12 16:01:39		880705
25	Koptel'tsev V. (selber)	24	97	237	2022-11-06 21:16:51		976870
26	Borisenkov D.V. (xuser)	95	9	173	2022-10-10 15:48:20		1016078
27	Lukov D.R. (Gendalf)	233	0	90	2022-07-21 11:18:50		1132988
28	Pavlov A.V. (Anton)	58	29	141	2022-04-10 16:17:39		1279569
29	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1393619
30	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1531326
31	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1659678
32	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1794032
33	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1836218
34	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1839966
35	Kozharinov A. (bubala)	198	0	10	2020-09-30 09:55:07		2082032
36	Samarin A. (not.yet.sql.master)	136	0	112	2020-08-14 15:12:10		2149395
37	Koptel'tsev V. (selber)	24	97	259	2020-06-24 00:22:07		2223725
38	Samarin A. (not.yet.sql.master)	136	0	138	2020-05-09 21:48:04		2288679
39	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2296649
40	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2336164
41	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2359891
42	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2670280
43	Bazavluk M. (DoNotLook)	93	9	141	2019-07-30 23:04:12		2697562
44	Romanov K.Yu. (kostik)	292	0	12	2019-07-25 08:42:10		2705625
45	Kordyum A. (alko58)	215	0	12	2019-07-12 15:58:52		2723908
46	Pavlov A.V. (Anton)	58	29	168	2019-06-12 01:20:21		2767986
47	Mal'tsev A.V. (Palkin)	109	8	218	2019-03-06 20:25:17		2907961
48	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3006229
49	Grishunin M.F. (MikhailFG)	89	10	144	2018-12-26 09:36:27		3009410
50	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		3151601
51	Skorohod I. (Dracul4ik)	76	15	45	2018-08-07 14:38:23		3212148
52	Voevutskij S.A. (SergLK)	201	0	45	2018-07-01 13:19:14		3265507
53	Zyrin V.E. (Vezyr)	517	0	29	2018-05-29 14:14:19		3312972
54	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		3405039
55	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3408948
56	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3409027
57	Azbel' E.G. (enull)	75	15	148	2018-03-08 04:10:21		3431656
58	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3445813
59	F (uff)	63	25	95	2018-01-22 15:57:03		3495750
60	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3547418
61	Kordyum A. (alko58)	215	0	101	2017-11-21 18:18:43		3584888
62	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3586649
63	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3587717
64	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3625432
65	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3652549
66	Skorohod I. (Dracul4ik)	76	15	156	2017-09-12 19:34:33		3685612
67	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3762257
68	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3808802
69	Vorob'ev E.V. (Johnnymnemonic)	150	0	138	2017-06-16 09:15:49		3812951
70	F (uff)	63	25	185	2017-06-01 10:27:49		3834479
71	Skorohod I. (Dracul4ik)	76	15	146	2017-05-04 17:54:53		3874352
72	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3936243
73	Skorohod I. (Dracul4ik)	76	15	144	2016-10-10 15:20:14		4171146
74	Sysoev A.V. (Sysa)	48	39	165	2016-09-16 00:07:24		4206619
75	Sysoev A.V. (Sysa)	48	39	168	2016-07-22 23:44:07		4285843
76	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4416178
77	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		4458277
78	Sivoglazov M.A. (Gaizenberg)	64	24	127	2015-11-28 14:08:52		4627698
79	Maslyaev V.S. (Velmont)	87	11	170	2015-11-06 14:01:20		4659385
80	Sivoglazov M.A. (Gaizenberg)	64	24	261	2015-10-13 23:22:26		4693384
81	Fomichev A.V. (Fomichev)	188	0	101	2015-10-07 11:21:04		4702746
82	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4728592
83	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4742896
84	Frolov (dr.shtopor)	79	14	141	2015-09-08 10:04:55		4744582
85	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4756191
86	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4759762
87	Halushka B. (halushka)	45	46	211	2015-08-26 13:33:28		4763093
88	Maslyaev V.S. (Velmont)	87	11	140	2015-07-27 05:27:50		4806779
89	Khromulyak O.M. (ChOleg)	118	5	150	2015-07-26 08:20:51		4808046
90	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4816608
91	Halushka B. (halushka)	45	46	143	2015-07-13 15:28:55		4826338
92	Halushka B. (halushka)	45	46	204	2015-07-07 15:42:03		4834965
93	Skorohod I. (Dracul4ik)	76	15	256	2015-01-28 15:03:11		5065404
94	Skorohod I. (Dracul4ik)	76	15	252	2015-01-27 11:56:41		5067030
95	Sysoev A.V. (Sysa)	48	39	143	2014-12-25 01:16:19		5115190
96	Grishin (alvigr)	77	15	185	2014-12-05 11:56:29		5143350
97	Fajnberg M.L. (burnall)	71	21	122	2014-10-31 12:46:14		5193700
98	Kabanets E.G. (azkaban)	91	9	209	2014-09-27 01:00:23		5243366
99	Sivoglazov M.A. (Gaizenberg)	64	24	178	2014-08-26 23:17:37		5288109
100	Perfilov B.V. (B o r i s)	98	9	29	2014-02-23 19:20:39		5553306

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