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SQL exercises

October 20, 02:42 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: 15192

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	182	2025-10-13 15:25:57		9317
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		145530
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		267250
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		341306
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		349405
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		379653
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		391841
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		539694
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		541002
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		563753
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		591193
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		673291
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		785356
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		785356
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		814512
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		841033
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		854665
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		920707
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		924021
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		926411
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		959075
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1004251
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1011338
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1035915
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1280946
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1318502
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1352492
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1456481
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1552646
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1591854
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1708764
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1855345
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1969395
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2107102
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2235453
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2369807
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2411994
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2415741
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2657807
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2725170
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2799500
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2864455
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2872425
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2911940
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2935667
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3246056
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3273338
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3281400
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3299684
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3343762
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3483737
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3582005
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3585186
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3727377
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3787924
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3841283
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3888748
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3980815
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3984724
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3984803
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4007432
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4021589
63	F (uff)	65	25	95	2018-01-22 15:57:03		4071526
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4123194
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4160664
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4162425
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4163493
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4201208
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4228325
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4261388
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4338033
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4384578
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4388727
74	F (uff)	65	25	185	2017-06-01 10:27:49		4410255
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4450128
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4512019
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4746922
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4782395
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4861618
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4991954
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5034053
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5203474
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5235161
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5269160
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5278522
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5304368
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5318672
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5320358
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5331967
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5335538
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5338869
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5382555
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5383822
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5392384
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5402114
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5410741
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5641179
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5642806
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5690966
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5719126

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