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SQL exercises

April 26, 12:42 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: 14622

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Slavutinskij V.V. (Vasilko)	425	0	5	2024-04-22 17:26:35		5476
2	Slavutinskij V.V. (Vasilko)	425	0	7	2024-04-22 17:26:21		5476
3	Komarov A.N. (Shveda Saulya)	53	34	151	2024-01-04 20:54:03	2024-04-16 01:11:59	147138
4	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		34632
5	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		61153
6	Latyntsev N.G. (aks_nsk)	51	37	253	2024-03-05 14:17:51		74784
7	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	305	2024-01-19 17:35:31		140827
8	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	306	2024-01-17 10:21:39		144141
9	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	71	2024-01-15 18:32:03		146530
10	Nikolaenko A.V. (Shadow77)	80	14	135	2023-12-24 02:07:10		179195
11	Komarov A.N. (Shveda Saulya)	53	34	150	2023-11-22 17:11:28		224371
12	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		231458
13	Rudikov E. (cubie)	130	0	138	2023-10-31 17:27:54		256034
14	Komarov A.N. (Shveda Saulya)	53	34	149	2023-05-14 13:36:07		501066
15	Zajtsev V.S. (Sleeping)	20	109	150	2023-04-18 11:40:16		538622
16	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		572612
17	Latyntsev N.G. (aks_nsk)	51	37	255	2023-01-12 16:01:39		676601
18	Koptel'tsev V. (selber)	25	95	237	2022-11-06 21:16:51		772765
19	Borisenkov D.V. (xuser)	94	9	173	2022-10-10 15:48:20		811974
20	Lukov D.R. (Gendalf)	231	0	90	2022-07-21 11:18:50		928883
21	Pavlov A.V. (Anton)	58	29	141	2022-04-10 16:17:39		1075465
22	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1189514
23	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1327221
24	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1455573
25	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1589927
26	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1632114
27	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1635861
28	Kozharinov A. (bubala)	196	0	10	2020-09-30 09:55:07		1877927
29	Samarin A. (not.yet.sql.master)	133	0	112	2020-08-14 15:12:10		1945290
30	Koptel'tsev V. (selber)	25	95	259	2020-06-24 00:22:07		2019620
31	Samarin A. (not.yet.sql.master)	133	0	138	2020-05-09 21:48:04		2084574
32	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2092545
33	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2132060
34	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2155787
35	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2466176
36	Bazavluk M. (DoNotLook)	92	9	141	2019-07-30 23:04:12		2493458
37	Romanov K.Yu. (kostik)	289	0	12	2019-07-25 08:42:10		2501520
38	Kordyum A. (alko58)	213	0	12	2019-07-12 15:58:52		2519803
39	Pavlov A.V. (Anton)	58	29	168	2019-06-12 01:20:21		2563882
40	Mal'tsev A.V. (Palkin)	108	8	218	2019-03-06 20:25:17		2703857
41	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		2802125
42	Grishunin M.F. (MikhailFG)	88	10	144	2018-12-26 09:36:27		2805306
43	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		2947497
44	Skorohod I. (Dracul4ik)	75	15	45	2018-08-07 14:38:23		3008044
45	Voevutskij S.A. (SergLK)	199	0	45	2018-07-01 13:19:14		3061403
46	Zyrin V.E. (Vezyr)	512	0	29	2018-05-29 14:14:19		3108868
47	Zajtsev V.S. (Sleeping)	20	109	226	2018-04-05 11:18:07		3186804
48	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		3200935
49	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3204844
50	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3204922
51	Azbel' E.G. (enull)	74	15	148	2018-03-08 04:10:21		3227552
52	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3241709
53	F (uff)	63	25	95	2018-01-22 15:57:03		3291645
54	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3343314
55	Kordyum A. (alko58)	213	0	101	2017-11-21 18:18:43		3380784
56	Zajtsev V.S. (Sleeping)	20	109	190	2017-11-20 12:57:31		3382545
57	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3383613
58	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3421328
59	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3448445
60	Skorohod I. (Dracul4ik)	75	15	156	2017-09-12 19:34:33		3481508
61	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3558153
62	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3604697
63	Vorob'ev E.V. (Johnnymnemonic)	147	0	138	2017-06-16 09:15:49		3608846
64	F (uff)	63	25	185	2017-06-01 10:27:49		3630374
65	Skorohod I. (Dracul4ik)	75	15	146	2017-05-04 17:54:53		3670247
66	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3732138
67	Skorohod I. (Dracul4ik)	75	15	144	2016-10-10 15:20:14		3967042
68	Sysoev A.V. (Sysa)	47	39	165	2016-09-16 00:07:24		4002515
69	Sysoev A.V. (Sysa)	47	39	168	2016-07-22 23:44:07		4081738
70	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4212074
71	Titovskij P.S. (kli3ma)	45	45	164	2016-03-25 05:49:30		4254173
72	Sivoglazov M.A. (Gaizenberg)	64	24	127	2015-11-28 14:08:52		4423593
73	Maslyaev V.S. (Velmont)	86	11	170	2015-11-06 14:01:20		4455281
74	Sivoglazov M.A. (Gaizenberg)	64	24	261	2015-10-13 23:22:26		4489280
75	Fomichev A.V. (Fomichev)	186	0	101	2015-10-07 11:21:04		4498641
76	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4524488
77	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4538791
78	Frolov (dr.shtopor)	78	14	141	2015-09-08 10:04:55		4540477
79	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4552087
80	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4555658
81	Halushka B. (halushka)	44	46	211	2015-08-26 13:33:28		4558989
82	Maslyaev V.S. (Velmont)	86	11	140	2015-07-27 05:27:50		4602674
83	Khromulyak O.M. (ChOleg)	117	5	150	2015-07-26 08:20:51		4603941
84	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4612503
85	Halushka B. (halushka)	44	46	143	2015-07-13 15:28:55		4622233
86	Halushka B. (halushka)	44	46	204	2015-07-07 15:42:03		4630860
87	Skorohod I. (Dracul4ik)	75	15	256	2015-01-28 15:03:11		4861299
88	Skorohod I. (Dracul4ik)	75	15	252	2015-01-27 11:56:41		4862926
89	Sysoev A.V. (Sysa)	47	39	143	2014-12-25 01:16:19		4911086
90	Grishin (alvigr)	76	15	185	2014-12-05 11:56:29		4939246
91	Fajnberg M.L. (burnall)	70	21	122	2014-10-31 12:46:14		4989596
92	Kabanets E.G. (azkaban)	90	9	209	2014-09-27 01:00:23		5039262
93	Sivoglazov M.A. (Gaizenberg)	64	24	178	2014-08-26 23:17:37		5084005
94	Perfilov B.V. (B o r i s)	97	9	29	2014-02-23 19:20:39		5349202
95	Utyonkov M.N. (=Maxim=)	46	42	255	2014-02-03 12:39:35		5378403
96	Shaymardanov M.M. (xLiSPirit)	38	62	147	2013-12-11 13:22:21		5456120
97	Martynyuk (Wiedzmen)	55	32	135	2013-11-26 20:27:27		5477295
98	Chebykin D. (GriGrim)	37	62	255	2013-11-07 15:23:46		5504959
99	Titovskij P.S. (kli3ma)	45	45	203	2013-10-31 10:01:45		5515361
100	Martynyuk (Wiedzmen)	55	32	185	2013-10-22 15:41:24		5527981

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