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SQL exercises

July 02, 21:31 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: 15126

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Varenikov D.M. (Dmitriy Varenikov)	20	129	251	2026-06-28 23:28:11	2026-06-29 16:31:13	1023
2	Williams B. (BW)	35	66	262	2025-04-17 12:32:37	2026-06-24 13:25:33	623573
3	Williams B. (BW)	35	66	24	2026-05-15 13:25:32	2026-06-22 22:34:12	55269
4	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		23213
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		57642
6	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		57668
7	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		78247
8	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		91307
9	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		101535
10	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		102377
11	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		133088
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		226316
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		302155
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		513859
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		717734
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		747982
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		760170
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		908023
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		909331
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		932082
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1041620
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1153685
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1153685
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1182841
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1209362
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1222994
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1289036
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1292350
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1294740
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1327405
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1379667
32	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1404244
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1720821
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1824810
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1920975
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1960183
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2077093
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2223674
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2475431
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2603783
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2738137
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2780323
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2784071
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3026137
45	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3093500
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3167830
47	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3232784
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3240754
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3280269
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3303996
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3614386
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3641668
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3649730
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3668013
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3712091
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3852067
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3950334
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3953515
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4095706
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4156253
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4209613
62	Zyrin V.E. (Vezyr)	550	0	29	2018-05-29 14:14:19		4257077
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4349144
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4353053
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4353132
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4375761
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4389918
68	F (uff)	65	25	95	2018-01-22 15:57:03		4439855
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4491523
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4528993
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4530754
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4531823
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4569537
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4596654
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4629717
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4706362
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4752907
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4757056
79	F (uff)	65	25	185	2017-06-01 10:27:49		4778584
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4818457
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4880348
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5115252
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5150724
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5229948
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5360283
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5402382
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5571803
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5603490
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5637489
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5646851
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5672697
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5687001
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5688687
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5700296
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5703867
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5707198
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5750884
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5752151
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5760713
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5770443

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