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SQL exercises

July 03, 13:56 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: 15127

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		24198
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		58627
6	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		58653
7	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		79232
8	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		92291
9	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		102519
10	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		103361
11	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		134073
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		227300
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		303140
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		514844
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		718719
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		748967
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		761155
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		909008
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		910316
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		933067
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1042605
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1154670
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1154670
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1183826
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1210347
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1223979
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1290021
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1293335
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1295725
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1328389
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1380652
32	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1405229
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1721806
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1825795
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1921960
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1961168
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2078078
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2224659
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2476416
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2604768
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2739121
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2781308
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2785055
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3027121
45	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3094484
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3168814
47	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3233769
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3241739
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3281254
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3304981
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3615370
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3642652
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3650714
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3668998
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3713076
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3853051
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3951319
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3954500
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4096691
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4157238
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4210597
62	Zyrin V.E. (Vezyr)	550	0	29	2018-05-29 14:14:19		4258062
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4350129
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4354038
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4354117
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4376746
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4390903
68	F (uff)	65	25	95	2018-01-22 15:57:03		4440840
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4492508
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4529978
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4531739
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4532807
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4570522
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4597639
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4630702
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4707347
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4753892
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4758041
79	F (uff)	65	25	185	2017-06-01 10:27:49		4779569
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4819442
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4881333
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5116236
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5151709
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5230932
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5361268
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5403367
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5572788
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5604475
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5638474
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5647836
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5673682
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5687986
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5689672
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5701281
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5704852
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5708183
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5751869
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5753136
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5761698
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5771428

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