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SQL exercises

June 29, 13:14 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: 15114

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		826
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		18396
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		52825
6	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		52851
7	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		73430
8	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		86489
9	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		96717
10	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		97559
11	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		128271
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		221498
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		297338
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		509042
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		712916
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		743165
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		755353
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		903206
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		904514
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		927265
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1036803
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1148868
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1148868
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1178024
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1204545
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1218177
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1284219
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1287533
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1289923
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1322587
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1374850
32	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1399427
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1716004
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1819993
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1916158
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1955366
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2072276
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2218857
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2470614
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2598965
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2733319
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2775506
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2779253
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3021319
45	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3088682
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3163012
47	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3227966
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3235937
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3275452
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3299179
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3609568
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3636850
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3644912
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3663196
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3707274
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3847249
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3945517
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3948698
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4090889
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4151436
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4204795
62	Zyrin V.E. (Vezyr)	550	0	29	2018-05-29 14:14:19		4252260
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4344327
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4348236
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4348315
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4370944
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4385101
68	F (uff)	65	25	95	2018-01-22 15:57:03		4435038
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4486706
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4524176
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4525937
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4527005
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4564720
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4591837
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4624900
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4701545
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4748090
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4752239
79	F (uff)	65	25	185	2017-06-01 10:27:49		4773767
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4813640
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4875531
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5110434
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5145907
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5225130
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5355466
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5397565
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5566986
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5598673
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5632672
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5642033
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5667880
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5682184
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5683870
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5695479
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5699050
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5702381
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5746067
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5747334
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5755896
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5765626

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