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SQL exercises

April 06, 15:46 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: 15058

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
2	Sarkis'yan G. (gennadi_s)	15	159	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
3	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
4	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
5	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
6	Sarkis'yan G. (gennadi_s)	15	159	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
7	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
8	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		7463
9	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
10	Polyakov V.M. (rock_4)	116	6	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
11	Sarkis'yan G. (gennadi_s)	15	159	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
12	Polyakov V.M. (rock_4)	116	6	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
13	Polyakov V.M. (rock_4)	116	6	139	2026-03-24 13:03:07	2026-03-25 16:32:20	1649
14	Polyakov V.M. (rock_4)	116	6	138	2026-02-20 17:03:21	2026-03-24 11:15:38	45732
15	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		100690
16	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		176530
17	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		388233
18	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		509953
19	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		592108
20	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		622356
21	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		634545
22	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		782397
23	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		783705
24	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		806456
25	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		915995
26	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1028059
27	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1028060
28	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1057216
29	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1083736
30	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1097368
31	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1163411
32	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1166724
33	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1169114
34	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1201779
35	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1254041
36	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1278618
37	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1595196
38	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1699184
39	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1795349
40	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1834558
41	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1951467
42	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2098048
43	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2349805
44	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2478157
45	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2612511
46	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2654697
47	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2658445
48	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2900511
49	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2967874
50	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3042204
51	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3107158
52	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3115129
53	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3154643
54	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3178371
55	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3488760
56	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3516042
57	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3524104
58	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3542387
59	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3586466
60	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3726441
61	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3824709
62	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3827890
63	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3970081
64	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4030628
65	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4083987
66	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4131452
67	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4223518
68	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4227428
69	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4227506
70	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4250136
71	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4264293
72	F (uff)	65	25	95	2018-01-22 15:57:03		4314229
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4365897
74	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4403367
75	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4405129
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4406197
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4443912
78	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4471029
79	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4504092
80	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4580736
81	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4627281
82	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4631430
83	F (uff)	65	25	185	2017-06-01 10:27:49		4652958
84	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4692831
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4754722
86	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4989626
87	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5025099
88	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5104322
89	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5234657
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5276757
91	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5446177
92	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5477865
93	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5511864
94	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5521225
95	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5547071
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5561375
97	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5563061
98	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5574670
99	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5578242
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5581573

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