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SQL exercises

July 02, 18:01 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: 15124

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		23002
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		57431
6	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		57457
7	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		78037
8	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		91096
9	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		101324
10	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		102166
11	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		132878
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		226105
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		301945
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		513648
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		717523
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		747771
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		759960
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		907812
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		909121
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		931871
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1041410
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1153475
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1153475
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1182631
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1209151
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1222783
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1288826
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1292139
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1294529
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1327194
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1379457
32	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1404033
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1720611
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1824599
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1920764
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1959973
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2076882
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2223463
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2475220
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2603572
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2737926
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2780113
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2783860
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3025926
45	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3093289
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3167619
47	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3232573
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3240544
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3280058
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3303786
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3614175
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3641457
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3649519
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3667802
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3711881
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3851856
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3950124
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3953305
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4095496
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4156043
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4209402
62	Zyrin V.E. (Vezyr)	550	0	29	2018-05-29 14:14:19		4256867
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4348933
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4352843
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4352921
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4375551
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4389708
68	F (uff)	65	25	95	2018-01-22 15:57:03		4439644
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4491312
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4528782
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4530544
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4531612
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4569327
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4596444
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4629507
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4706152
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4752696
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4756845
79	F (uff)	65	25	185	2017-06-01 10:27:49		4778373
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4818246
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4880137
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5115041
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5150514
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5229737
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5360072
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5402172
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5571592
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5603280
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5637279
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5646640
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5672486
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5686790
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5688476
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5700086
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5703657
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5706988
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5750673
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5751940
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5760502
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5770232

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