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SQL exercises

October 06, 01:20 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: 15168

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	20	116	240	2025-09-08 22:07:14	2025-09-24 08:05:14	22198
2	Sarkis'yan G. (gennadi_s)	21	115	181	2025-09-06 14:04:35		42436
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		125288
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		247008
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		321064
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		329163
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		359411
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		371599
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		519452
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		520760
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		543511
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		570951
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		653049
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		765114
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		765114
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		794270
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		820791
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		834423
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		900465
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		903779
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		906169
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		938834
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		984009
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		991096
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1015673
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1260705
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1298260
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1332250
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1436239
30	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1532404
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1571612
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1688522
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1835103
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1949153
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2086860
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2215212
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2349566
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2391752
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2395500
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2637566
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2704929
42	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2779259
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2844213
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2852183
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2891698
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2915425
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3225815
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3253097
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3261159
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3279442
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3323520
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3463495
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3561763
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3564944
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3707135
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3767682
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3821042
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3868506
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3960573
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3964482
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3964561
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3987190
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4001347
64	F (uff)	65	25	95	2018-01-22 15:57:03		4051284
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4102952
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4140422
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4142183
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4143251
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4180966
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4208083
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4241146
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4317791
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4364336
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4368485
75	F (uff)	65	25	185	2017-06-01 10:27:49		4390013
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4429886
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4491777
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4726681
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4762153
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4841377
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4971712
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5013811
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5183232
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5214919
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5248918
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5258280
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5284126
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5298430
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5300116
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5311725
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5315296
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5318627
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5362313
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5363580
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5372142
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5381872
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5390499
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5620938
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5622564
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5670724

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