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SQL exercises

October 10, 05:56 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		131324
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		253044
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		327100
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		335198
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		365447
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		377635
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		525488
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		526796
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		549547
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		576987
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		659085
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		771150
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		771150
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		800306
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		826827
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		840459
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		906501
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		909815
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		912205
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		944869
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		990045
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		997132
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1021709
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1266740
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1304296
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1338286
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1442275
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1538440
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1577648
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1694558
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1841139
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1955189
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2092896
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2221247
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2355601
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2397788
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2401535
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2643601
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2710964
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2785294
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2850248
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2858219
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2897734
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2921461
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3231850
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3259132
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3267194
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3285478
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3329556
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3469531
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3567799
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3570980
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3713171
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3773718
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3827077
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3874542
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3966609
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3970518
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3970597
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3993226
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4007383
63	F (uff)	65	25	95	2018-01-22 15:57:03		4057320
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4108988
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4146458
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4148219
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4149287
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4187002
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4214119
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4247182
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4323827
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4370372
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4374521
74	F (uff)	65	25	185	2017-06-01 10:27:49		4396049
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4435922
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4497813
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4732716
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4768189
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4847412
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4977748
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5019847
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5189268
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5220955
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5254954
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5264315
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5290162
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5304466
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5306152
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5317761
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5321332
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5324663
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5368349
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5369616
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5378178
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5387908
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5396535
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5626973
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5628600
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5676760
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5704920

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