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SQL exercises

August 28, 23:58 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: 15150

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	22	109	179	2025-08-11 14:48:50		25029
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		70485
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		192206
4	Fomichev A.V. (Fomichev)	196	0	7	2025-02-25 02:16:37		266262
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		274360
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		304608
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		316797
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		464650
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		465958
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		488708
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		516148
12	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		598247
13	Slavutinskij V.V. (Vasilko)	446	0	5	2024-04-22 17:26:35		710312
14	Slavutinskij V.V. (Vasilko)	446	0	7	2024-04-22 17:26:21		710312
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		739468
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		765989
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		779620
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		845663
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		848977
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		851366
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		884031
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		929207
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		936294
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		960870
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1205902
26	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1243458
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1277448
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1381437
29	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1477601
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1516810
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1633719
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1780301
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1894350
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2032057
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2160409
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2294763
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2336950
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2340697
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2582763
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2650126
41	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2724456
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2789410
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2797381
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2836895
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2860623
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3171012
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3198294
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3206356
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3224639
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3268718
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3408693
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3506961
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3510142
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3652333
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3712880
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3766239
57	Zyrin V.E. (Vezyr)	537	0	29	2018-05-29 14:14:19		3813704
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3905770
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3909680
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3909758
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3932388
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3946545
63	F (uff)	65	25	95	2018-01-22 15:57:03		3996481
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4048150
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4085619
66	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		4087381
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4088449
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4126164
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4153281
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4186344
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4262989
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4309533
73	Vorob'ev E.V. (Johnnymnemonic)	158	0	138	2017-06-16 09:15:49		4313682
74	F (uff)	65	25	185	2017-06-01 10:27:49		4335210
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4375083
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4436974
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4671878
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4707351
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4786574
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4916909
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4959009
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5128429
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5160117
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5194116
85	Fomichev A.V. (Fomichev)	196	0	101	2015-10-07 11:21:04		5203477
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5229323
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5243627
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5245313
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5256923
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5260494
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5263825
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5307510
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5308777
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5317339
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5327069
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5335696
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5566135
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5567761
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5615922
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5644082

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