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SQL exercises

March 19, 02:38 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: 15413

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	20	122	179	2026-02-21 19:34:16	2026-03-09 22:57:01	23243
2	Polyakov V.M. (rock_4)	133	0	138	2026-02-20 17:03:21		38016
3	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		73983
4	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		149823
5	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		361526
6	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		483246
7	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		565401
8	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		595649
9	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		607837
10	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		755690
11	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		756998
12	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		779749
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		889288
14	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1001352
15	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1001353
16	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1030508
17	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1057029
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1070661
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1136703
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1140017
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1142407
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1175072
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1227334
24	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1251911
25	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1534499
26	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1568488
27	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1672477
28	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1768642
29	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1807851
30	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1924760
31	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2071341
32	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2323098
33	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2451450
34	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2585804
35	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2627990
36	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2631738
37	Kozharinov A. (bubala)	210	0	10	2020-09-30 09:55:07		2873804
38	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2941167
39	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3015497
40	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3080451
41	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3088421
42	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3127936
43	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3151663
44	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3462053
45	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3489335
46	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3497397
47	Kordyum A. (alko58)	228	0	12	2019-07-12 15:58:52		3515680
48	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3559759
49	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3699734
50	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3798001
51	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3801182
52	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3943373
53	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4003921
54	Voevutskij S.A. (SergLK)	216	0	45	2018-07-01 13:19:14		4057280
55	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4104745
56	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4196811
57	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4200720
58	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4200799
59	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4223429
60	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4237585
61	F (uff)	65	25	95	2018-01-22 15:57:03		4287522
62	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4339190
63	Kordyum A. (alko58)	228	0	101	2017-11-21 18:18:43		4376660
64	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4378421
65	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4379490
66	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4417205
67	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4444321
68	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4477384
69	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4554029
70	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4600574
71	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4604723
72	F (uff)	65	25	185	2017-06-01 10:27:49		4626251
73	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4666124
74	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4728015
75	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4962919
76	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4998391
77	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5077615
78	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5207950
79	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5250049
80	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5419470
81	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5451158
82	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5485156
83	Fomichev A.V. (Fomichev)	198	0	101	2015-10-07 11:21:04		5494518
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5520364
85	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5534668
86	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5536354
87	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5547963
88	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5551534
89	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5554865
90	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5598551
91	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5599818
92	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5608380
93	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5618110
94	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5626737
95	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5857176
96	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5858802
97	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5906963
98	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5935122
99	Fajnberg M.L. (burnall)	73	21	122	2014-10-31 12:46:14		5985473
100	Kabanets E.G. (azkaban)	94	9	209	2014-09-27 01:00:23		6035139

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