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SQL exercises

April 02, 16:49 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: 15421

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		1766
2	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
3	Polyakov V.M. (rock_4)	116	6	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
4	Sarkis'yan G. (gennadi_s)	15	156	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
5	Polyakov V.M. (rock_4)	116	6	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
6	Polyakov V.M. (rock_4)	116	6	139	2026-03-24 13:03:07	2026-03-25 16:32:20	1649
7	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47		11931
8	Polyakov V.M. (rock_4)	116	6	138	2026-02-20 17:03:21	2026-03-24 11:15:38	45732
9	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		94994
10	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		170833
11	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		382537
12	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		504257
13	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		586412
14	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		616660
15	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		628848
16	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		776701
17	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		778009
18	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		800760
19	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		910298
20	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1022363
21	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1022363
22	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1051519
23	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1078040
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1091672
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1157714
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1161028
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1163418
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1196083
29	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1248345
30	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1272922
31	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1589499
32	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1693488
33	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1789653
34	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1828861
35	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1945771
36	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2092352
37	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2344109
38	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2472461
39	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2606815
40	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2649001
41	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2652749
42	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2894815
43	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2962178
44	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3036508
45	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3101462
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3109432
47	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3148947
48	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3172674
49	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3483064
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3510346
51	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3518408
52	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3536691
53	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3580769
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3720745
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3819012
56	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3822193
57	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3964384
58	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4024931
59	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4078291
60	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4125756
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4217822
62	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4221731
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4221810
64	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4244439
65	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4258596
66	F (uff)	65	25	95	2018-01-22 15:57:03		4308533
67	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4360201
68	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4397671
69	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4399432
70	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4400501
71	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4438215
72	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4465332
73	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4498395
74	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4575040
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4621585
76	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4625734
77	F (uff)	65	25	185	2017-06-01 10:27:49		4647262
78	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4687135
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4749026
80	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4983930
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5019402
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5098626
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5228961
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5271060
85	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5440481
86	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5472168
87	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5506167
88	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5515529
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5541375
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5555679
91	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5557365
92	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5568974
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5572545
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5575876
95	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5619562
96	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5620829
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5629391
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5639121
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5647748
100	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5878187

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