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SQL exercises

February 21, 21:19 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: 14950

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Krasovskij E.A. (pegoopik)	3	251	303	2025-02-21 16:11:25		308
2	Filippkin D.V. (_dimon_)	1	257	263	2025-02-19 11:18:04		3482
3	Filippkin D.V. (_dimon_)	1	257	303	2025-02-18 10:13:41	2025-02-18 10:31:59	18
4	Sarkis'yan G. (gennadi_s)	32	69	161	2025-02-16 16:50:58		7469
5	Makarov I.A. (_Bkmz_)	93	9	127	2025-02-16 10:06:52	2025-02-16 14:51:33	285
6	Makarov I.A. (_Bkmz_)	93	9	101	2025-02-15 10:13:49	2025-02-15 22:47:47	754
7	Chernov D.V. (Kursist)	2	255	217	2025-02-15 21:52:46		8607
8	Filippkin D.V. (_dimon_)	1	257	217	2025-02-15 10:24:37	2025-02-15 10:52:17	28
9	Krasovskij E.A. (pegoopik)	3	251	217	2025-02-14 21:17:06	2025-02-14 21:17:14	0
10	Sarkis'yan G. (gennadi_s)	32	69	160	2025-01-23 14:44:59	2025-02-14 12:54:17	31569
11	Fomichev A.V. (Fomichev)	192	0	5	2025-02-14 00:51:23		11308
12	Makarov I.A. (_Bkmz_)	93	9	105	2025-02-09 10:15:05	2025-02-09 11:59:37	105
13	Makarov I.A. (_Bkmz_)	93	9	100	2025-02-08 09:58:08	2025-02-08 15:12:24	314
14	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		33730
15	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		45918
16	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		193771
17	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		195079
18	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		217830
19	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		245270
20	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		327368
21	Slavutinskij V.V. (Vasilko)	437	0	5	2024-04-22 17:26:35		439433
22	Slavutinskij V.V. (Vasilko)	437	0	7	2024-04-22 17:26:21		439433
23	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		468589
24	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		495110
25	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		508742
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		574784
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		578098
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		580488
29	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		613152
30	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		658328
31	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		665415
32	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		689992
33	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		935023
34	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		972579
35	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1006569
36	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1110558
37	Koptel'tsev V. (selber)	23	103	237	2022-11-06 21:16:51		1206723
38	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1245931
39	Lukov D.R. (Gendalf)	237	0	90	2022-07-21 11:18:50		1362841
40	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1509422
41	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1623472
42	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1761179
43	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1889530
44	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2023884
45	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2066071
46	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2069818
47	Kozharinov A. (bubala)	202	0	10	2020-09-30 09:55:07		2311884
48	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2379247
49	Koptel'tsev V. (selber)	23	103	259	2020-06-24 00:22:07		2453577
50	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2518532
51	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2526502
52	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2566017
53	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2589744
54	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2900133
55	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		2927415
56	Romanov K.Yu. (kostik)	300	0	12	2019-07-25 08:42:10		2935477
57	Kordyum A. (alko58)	219	0	12	2019-07-12 15:58:52		2953761
58	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		2997839
59	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3137814
60	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3236082
61	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3239263
62	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3381454
63	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3442001
64	Voevutskij S.A. (SergLK)	206	0	45	2018-07-01 13:19:14		3495360
65	Zyrin V.E. (Vezyr)	529	0	29	2018-05-29 14:14:19		3542825
66	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3634892
67	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3638801
68	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3638880
69	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3661509
70	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3675666
71	F (uff)	64	25	95	2018-01-22 15:57:03		3725603
72	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3777271
73	Kordyum A. (alko58)	219	0	101	2017-11-21 18:18:43		3814741
74	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3816502
75	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3817570
76	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3855285
77	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3882402
78	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3915465
79	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3992110
80	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4038655
81	Vorob'ev E.V. (Johnnymnemonic)	154	0	138	2017-06-16 09:15:49		4042804
82	F (uff)	64	25	185	2017-06-01 10:27:49		4064332
83	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4104205
84	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4166096
85	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4400999
86	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4436472
87	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4515695
88	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4646031
89	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4688130
90	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4857551
91	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4889238
92	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		4923237
93	Fomichev A.V. (Fomichev)	192	0	101	2015-10-07 11:21:04		4932599
94	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4958445
95	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4972749
96	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		4974435
97	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		4986044
98	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		4989615
99	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		4992946
100	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5036632

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