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SQL exercises

April 15, 00:18 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: 15070

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	116	6	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
2	Sarkis'yan G. (gennadi_s)	15	160	198	2026-04-13 14:57:51		2001
3	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
4	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
5	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		6200
6	Sarkis'yan G. (gennadi_s)	15	160	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
7	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
8	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
9	Polyakov V.M. (rock_4)	116	6	146	2026-04-06 15:53:06		12026
10	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
11	Sarkis'yan G. (gennadi_s)	15	160	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
12	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
13	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
14	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
15	Sarkis'yan G. (gennadi_s)	15	160	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
16	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
17	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		19495
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		112723
19	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		188562
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		400266
21	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		521986
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		604141
23	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		634389
24	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		646577
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		794430
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		795738
27	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		818489
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		928027
29	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1040092
30	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1040092
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1069248
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1095769
33	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1109401
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1175443
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1178757
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1181147
37	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1213812
38	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1266074
39	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1290651
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1607228
41	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1711217
42	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1807382
43	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1846590
44	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1963500
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2110081
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2361838
47	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2490190
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2624544
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2666730
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2670478
51	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2912544
52	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2979907
53	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3054237
54	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3119191
55	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3127161
56	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3166676
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3190403
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3500793
59	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3528075
60	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3536137
61	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3554420
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3598498
63	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3738473
64	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3836741
65	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3839922
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3982113
67	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4042660
68	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4096020
69	Zyrin V.E. (Vezyr)	545	0	29	2018-05-29 14:14:19		4143484
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4235551
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4239460
72	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4239539
73	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4262168
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4276325
75	F (uff)	65	25	95	2018-01-22 15:57:03		4326262
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4377930
77	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4415400
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4417161
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4418229
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4455944
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4483061
82	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4516124
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4592769
84	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4639314
85	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4643463
86	F (uff)	65	25	185	2017-06-01 10:27:49		4664991
87	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4704864
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4766755
89	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5001659
90	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5037131
91	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5116355
92	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5246690
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5288789
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5458210
95	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5489897
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5523896
97	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5533258
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5559104
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5573408
100	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5575094

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