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SQL exercises

May 09, 15:26 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: 15056

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	29	86	168	2025-05-02 13:19:35	2025-05-05 14:34:28	4395
2	Sarkis'yan G. (gennadi_s)	29	86	167	2025-04-27 13:52:39	2025-05-01 14:58:12	5826
3	Koptel'tsev V. (selber)	20	113	167	2025-04-12 13:06:32	2025-04-27 20:30:40	22044
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		31854
5	Fomichev A.V. (Fomichev)	194	0	7	2025-02-25 02:16:37		105910
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		114009
7	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		144257
8	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		156446
9	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		304298
10	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		305606
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		328357
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		355797
13	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		437896
14	Slavutinskij V.V. (Vasilko)	445	0	5	2024-04-22 17:26:35		549960
15	Slavutinskij V.V. (Vasilko)	445	0	7	2024-04-22 17:26:21		549961
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		579117
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		605637
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		619269
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		685311
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		688625
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		691015
22	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		723680
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		768856
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		775942
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		800519
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1045551
27	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1083107
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1117097
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1221085
30	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1317250
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1356459
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1473368
33	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1619949
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1733999
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1871706
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2000058
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2134412
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2176598
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2180346
40	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2422412
41	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2489775
42	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2564105
43	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2629059
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2637030
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2676544
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2700271
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3010661
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3037943
49	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3046005
50	Kordyum A. (alko58)	222	0	12	2019-07-12 15:58:52		3064288
51	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3108367
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3248342
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3346610
54	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3349791
55	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3491982
56	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3552529
57	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3605888
58	Zyrin V.E. (Vezyr)	536	0	29	2018-05-29 14:14:19		3653353
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3745419
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3749328
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3749407
62	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3772037
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3786193
64	F (uff)	64	25	95	2018-01-22 15:57:03		3836130
65	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3887798
66	Kordyum A. (alko58)	222	0	101	2017-11-21 18:18:43		3925268
67	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3927029
68	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3928098
69	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3965813
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3992930
71	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		4025992
72	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4102637
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4149182
74	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4153331
75	F (uff)	64	25	185	2017-06-01 10:27:49		4174859
76	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4214732
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4276623
78	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4511527
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4547000
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4626223
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4756558
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4798657
83	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4968078
84	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4999766
85	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5033765
86	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		5043126
87	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5068972
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5083276
89	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5084962
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5096571
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5100142
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5103474
93	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5147159
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5148426
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5156988
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5166718
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5175345
98	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5405784
99	Skorohod I. (Dracul4ik)	77	15	252	2015-01-27 11:56:41		5407410
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5455571

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