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SQL exercises

October 31, 03:35 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: 13906

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	13	193	209	2026-10-30 12:41:46	2026-10-30 14:06:57	85
2	Sarkis'yan G. (gennadi_s)	13	193	192	2026-10-17 13:29:17	2026-10-22 14:52:53	7284
3	Frolov K.A. (Murderface_)	136	0	53	2026-10-19 19:02:15		16353
4	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		29434
5	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		44321
6	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		77484
7	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		91553
8	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		102062
9	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		131881
10	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		134774
11	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		143482
12	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		146250
13	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		196376
14	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		230805
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		264470
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		274698
17	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		275540
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		306252
19	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		399479
20	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		475319
21	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		687022
22	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		921145
23	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		933334
24	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1081186
25	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1082495
26	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1105245
27	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1214784
28	Slavutinskij V.V. (Vasilko)	459	0	5	2024-04-22 17:26:35		1326849
29	Slavutinskij V.V. (Vasilko)	459	0	7	2024-04-22 17:26:21		1326849
30	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1356005
31	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1382525
32	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1396157
33	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1462200
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1465513
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1467903
36	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1500568
37	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1552831
38	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1577407
39	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1893985
40	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1997973
41	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2094138
42	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2133347
43	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2250256
44	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2396837
45	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2648594
46	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2776946
47	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2911300
48	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2953487
49	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2957234
50	Kozharinov A. (bubala)	215	0	10	2020-09-30 09:55:07		3199300
51	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3266663
52	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3340993
53	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3405947
54	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3413918
55	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3453432
56	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3477160
57	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3787549
58	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3814831
59	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3822893
60	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3841176
61	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3885255
62	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4025230
63	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4123498
64	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4126679
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4268870
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4329417
67	Voevutskij S.A. (SergLK)	222	0	45	2018-07-01 13:19:14		4382776
68	Zyrin V.E. (Vezyr)	555	0	29	2018-05-29 14:14:19		4430241
69	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4522307
70	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4526217
71	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4526295
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4548925
73	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4563082
74	F (uff)	66	23	95	2018-01-22 15:57:03		4613018
75	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4664686
76	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4702156
77	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4703918
78	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4704986
79	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4742701
80	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4769818
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4802881
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4879526
83	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4926070
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4930219
85	F (uff)	66	23	185	2017-06-01 10:27:49		4951747
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4991620
87	Movlyanov A.P. (Oct)	14	191	218	2017-03-22 18:23:50		5053511
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5288415
89	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5323888
90	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5403111
91	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5533446
92	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5575546
93	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5744966
94	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5776654
95	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5810653
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5820014
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5845860
98	Movlyanov A.P. (Oct)	14	191	194	2015-09-09 14:10:52		5860164
99	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5861850
100	Varenikov D.M. (Dmitriy Varenikov)	20	128	263	2015-08-31 08:35:37		5873460

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