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SQL exercises

October 10, 00:36 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: 15188

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		131004
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		252724
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		326780
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		334879
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		365127
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		377315
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		525168
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		526476
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		549227
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		576667
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		658765
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		770830
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		770830
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		799986
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		826507
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		840139
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		906181
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		909495
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		911885
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		944549
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		989725
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		996812
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1021389
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1266421
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1303976
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1337966
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1441955
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1538120
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1577328
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1694238
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1840819
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1954869
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2092576
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2220928
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2355282
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2397468
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2401215
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2643282
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2710644
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2784975
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2849929
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2857899
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2897414
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2921141
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3231530
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3258812
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3266874
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3285158
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3329236
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3469211
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3567479
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3570660
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3712851
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3773398
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3826757
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3874222
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3966289
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3970198
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3970277
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3992906
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4007063
63	F (uff)	65	25	95	2018-01-22 15:57:03		4057000
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4108668
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4146138
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4147899
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4148967
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4186682
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4213799
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4246862
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4323507
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4370052
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4374201
74	F (uff)	65	25	185	2017-06-01 10:27:49		4395729
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4435602
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4497493
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4732396
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4767869
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4847093
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4977428
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5019527
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5188948
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5220635
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5254634
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5263996
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5289842
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5304146
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5305832
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5317441
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5321012
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5324343
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5368029
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5369296
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5377858
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5387588
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5396215
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5626653
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5628280
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5676440
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5704600

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