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SQL exercises

September 27, 00:59 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: 13863

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	14	187	303	2026-09-26 14:18:02	2026-09-26 14:40:37	23
2	Koptel'tsev V. (selber)	19	133	53	2026-09-20 05:35:11	2026-09-23 22:59:05	5364
3	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31		4961
4	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12	2026-09-19 18:45:38	1495
5	Krasovskij E.A. (pegoopik)	1	266	53	2026-09-18 15:39:39	2026-09-18 15:39:44	0
6	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		28368
7	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		42437
8	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		52946
9	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		82766
10	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		85658
11	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		94366
12	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		97134
13	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		147260
14	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		181690
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		215354
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		225582
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		226424
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		257136
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		350363
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		426203
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		637906
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		872029
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		884218
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1032071
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1033379
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1056129
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1165668
28	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1277733
29	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1277733
30	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1306889
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1333410
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1347042
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1413084
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1416398
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1418787
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1451452
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1503715
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1528291
39	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1844869
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1948858
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2045023
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2084231
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2201141
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2347722
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2599478
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2727830
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2862184
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2904371
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2908118
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3150184
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3217547
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3291877
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3356831
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3364802
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3404317
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3428044
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3738433
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3765715
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3773777
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3792060
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3836139
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3976114
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4074382
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4077563
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4219754
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4280301
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4333660
68	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4381125
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4473192
70	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4477101
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4477180
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4499809
73	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4513966
74	F (uff)	65	25	95	2018-01-22 15:57:03		4563902
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4615571
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4653041
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4654802
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4655870
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4693585
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4720702
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4753765
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4830410
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4876954
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4881104
85	F (uff)	65	25	185	2017-06-01 10:27:49		4902632
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4942504
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5004396
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5239299
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5274772
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5353995
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5484331
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5526430
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5695850
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5727538
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5761537
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5770898
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5796745
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5811048
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5812734
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5824344

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