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SQL exercises

October 13, 04:05 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: 15179

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		135532
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		257253
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		331309
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		339407
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		369655
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		381844
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		529697
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		531005
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		553755
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		581196
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		663294
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		775359
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		775359
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		804515
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		831036
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		844667
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		910710
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		914024
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		916413
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		949078
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		994254
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1001341
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1025917
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1270949
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1308505
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1342495
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1446484
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1542648
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1581857
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1698766
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1845348
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1959397
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2097104
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2225456
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2359810
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2401997
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2405744
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2647810
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2715173
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2789503
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2854457
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2862428
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2901943
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2925670
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3236059
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3263341
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3271403
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3289686
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3333765
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3473740
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3572008
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3575189
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3717380
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3777927
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3831286
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3878751
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3970818
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3974727
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3974805
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3997435
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4011592
63	F (uff)	65	25	95	2018-01-22 15:57:03		4061528
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4113197
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4150667
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4152428
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4153496
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4191211
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4218328
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4251391
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4328036
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4374580
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4378729
74	F (uff)	65	25	185	2017-06-01 10:27:49		4400257
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4440130
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4502021
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4736925
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4772398
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4851621
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4981957
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5024056
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5193476
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5225164
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5259163
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5268524
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5294371
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5308674
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5310360
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5321970
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5325541
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5328872
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5372557
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5373824
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5382386
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5392116
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5400743
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5631182
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5632809
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5680969
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5709129

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