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SQL exercises

December 22, 20:52 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: 15329

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	33	71	238	2025-12-21 01:40:19	2025-12-21 02:29:32	49
2	Petrov Y. (YuriPetrov)	33	71	235	2025-12-20 17:12:38	2025-12-20 17:59:08	47
3	Petrov Y. (YuriPetrov)	33	71	239	2025-12-20 00:52:23	2025-12-20 01:31:37	39
4	Petrov Y. (YuriPetrov)	33	71	236	2025-12-19 00:26:50	2025-12-19 01:32:46	66
5	Kostomarov A.V. (al29)	5	247	88	2025-12-16 13:08:02	2025-12-16 14:28:09	80
6	Sarkis'yan G. (gennadi_s)	17	134	188	2025-11-30 13:49:15	2025-12-15 18:47:38	21898
7	Petrov Y. (YuriPetrov)	33	71	88	2025-12-10 15:24:13	2025-12-10 15:35:04	11
8	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14	2025-12-09 14:51:32	1572
9	Petrov Y. (YuriPetrov)	33	71	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
10	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		25636
11	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		237339
12	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		359059
13	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		433115
14	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		441214
15	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		471462
16	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		483651
17	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		631503
18	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		632811
19	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		655562
20	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		683002
21	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		765101
22	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		877165
23	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		877166
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		906322
25	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		932842
26	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		946474
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1012517
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1015830
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1018220
30	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1050885
31	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1096061
32	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1103147
33	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1127724
34	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1372756
35	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1410312
36	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1444302
37	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1548290
38	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1644455
39	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1683664
40	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1800573
41	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1947154
42	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2198911
43	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2327263
44	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2461617
45	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2503803
46	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2507551
47	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2749617
48	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2816980
49	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2891310
50	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2956264
51	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2964235
52	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3003749
53	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3027477
54	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3337866
55	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3365148
56	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3373210
57	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3391493
58	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3435572
59	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3575547
60	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3673815
61	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3676996
62	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3819187
63	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3879734
64	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3933093
65	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3980558
66	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4072624
67	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4076534
68	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4076612
69	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4099242
70	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4113399
71	F (uff)	65	25	95	2018-01-22 15:57:03		4163335
72	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4215003
73	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4252473
74	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4254235
75	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4255303
76	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4293018
77	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4320135
78	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4353198
79	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4429842
80	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4476387
81	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4480536
82	F (uff)	65	25	185	2017-06-01 10:27:49		4502064
83	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4541937
84	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4603828
85	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4838732
86	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4874205
87	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4953428
88	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5083763
89	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5125863
90	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5295283
91	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5326971
92	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5360970
93	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5370331
94	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5396177
95	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5410481
96	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5412167
97	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5423776
98	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5427348
99	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5430679
100	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5474364

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