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SQL exercises

April 21, 03:43 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: 15069

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	162	198	2026-04-13 14:57:51	2026-04-19 13:46:18	8568
2	Sigankov V.I. (vasilyvanc)	33	74	24	2026-04-16 17:02:10	2026-04-16 17:20:47	19
3	Polyakov V.M. (rock_4)	94	9	152	2026-04-16 13:35:42		6608
4	Polyakov V.M. (rock_4)	94	9	162	2026-04-16 13:25:02		6618
5	Polyakov V.M. (rock_4)	94	9	146	2026-04-06 15:53:06	2026-04-15 17:22:34	13049
6	Polyakov V.M. (rock_4)	94	9	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
7	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
8	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
9	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		15044
10	Sarkis'yan G. (gennadi_s)	15	162	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
11	Polyakov V.M. (rock_4)	94	9	148	2026-04-01 11:23:28		28340
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		121567
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		197407
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		409110
15	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		530831
16	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		612985
17	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		643234
18	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		655422
19	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		803275
20	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		804583
21	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		827333
22	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		936872
23	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1048937
24	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1048937
25	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1078093
26	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1104614
27	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1118246
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1184288
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1187602
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1189991
31	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1222656
32	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1274919
33	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1299496
34	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1616073
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1720062
36	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1816227
37	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1855435
38	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1972345
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2118926
40	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2370682
41	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2499034
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2633388
43	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2675575
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2679322
45	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2921388
46	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2988751
47	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3063081
48	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3128035
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3136006
50	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3175521
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3199248
52	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3509637
53	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3536919
54	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3544981
55	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3563265
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3607343
57	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3747318
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3845586
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3848767
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3990958
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4051505
62	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4104864
63	Zyrin V.E. (Vezyr)	547	0	29	2018-05-29 14:14:19		4152329
64	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4244396
65	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4248305
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4248384
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4271013
68	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4285170
69	F (uff)	65	25	95	2018-01-22 15:57:03		4335106
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4386775
71	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4424245
72	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4426006
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4427074
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4464789
75	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4491906
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4524969
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4601614
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4648159
79	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4652308
80	F (uff)	65	25	185	2017-06-01 10:27:49		4673836
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4713709
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4775600
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5010503
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5045976
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5125199
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5255535
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5297634
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5467055
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5498742
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5532741
91	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5542102
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5567949
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5582253
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5583939
95	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5595548
96	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5599119
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5602450
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5646136
99	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5647403
100	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5655964

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