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SQL exercises

February 22, 16:47 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: 14956

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Makarov I.A. (_Bkmz_)	93	9	112	2025-02-22 16:23:39		24
2	Makarov I.A. (_Bkmz_)	93	9	102	2025-02-22 09:53:06	2025-02-22 14:50:00	297
3	Krasovskij E.A. (pegoopik)	3	253	239	2025-02-21 21:31:42	2025-02-21 21:31:51	0
4	Krasovskij E.A. (pegoopik)	3	253	303	2025-02-21 16:11:25		1476
5	Filippkin D.V. (_dimon_)	1	257	263	2025-02-19 11:18:04		4650
6	Filippkin D.V. (_dimon_)	1	257	303	2025-02-18 10:13:41	2025-02-18 10:31:59	18
7	Sarkis'yan G. (gennadi_s)	32	69	161	2025-02-16 16:50:58		8637
8	Makarov I.A. (_Bkmz_)	93	9	127	2025-02-16 10:06:52	2025-02-16 14:51:33	285
9	Makarov I.A. (_Bkmz_)	93	9	101	2025-02-15 10:13:49	2025-02-15 22:47:47	754
10	Chernov D.V. (Kursist)	2	255	217	2025-02-15 21:52:46		9775
11	Filippkin D.V. (_dimon_)	1	257	217	2025-02-15 10:24:37	2025-02-15 10:52:17	28
12	Krasovskij E.A. (pegoopik)	3	253	217	2025-02-14 21:17:06	2025-02-14 21:17:14	0
13	Sarkis'yan G. (gennadi_s)	32	69	160	2025-01-23 14:44:59	2025-02-14 12:54:17	31569
14	Fomichev A.V. (Fomichev)	192	0	5	2025-02-14 00:51:23		12476
15	Makarov I.A. (_Bkmz_)	93	9	105	2025-02-09 10:15:05	2025-02-09 11:59:37	105
16	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		34898
17	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		47086
18	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		194939
19	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		196247
20	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		218998
21	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		246438
22	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		328536
23	Slavutinskij V.V. (Vasilko)	437	0	5	2024-04-22 17:26:35		440601
24	Slavutinskij V.V. (Vasilko)	437	0	7	2024-04-22 17:26:21		440601
25	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		469757
26	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		496278
27	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		509910
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		575952
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		579266
30	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		581656
31	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		614320
32	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		659496
33	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		666583
34	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		691160
35	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		936192
36	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		973747
37	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1007737
38	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1111726
39	Koptel'tsev V. (selber)	23	103	237	2022-11-06 21:16:51		1207891
40	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1247099
41	Lukov D.R. (Gendalf)	237	0	90	2022-07-21 11:18:50		1364009
42	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1510590
43	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1624640
44	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1762347
45	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1890699
46	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2025053
47	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2067239
48	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2070986
49	Kozharinov A. (bubala)	202	0	10	2020-09-30 09:55:07		2313053
50	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2380415
51	Koptel'tsev V. (selber)	23	103	259	2020-06-24 00:22:07		2454746
52	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2519700
53	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2527670
54	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2567185
55	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2590912
56	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2901301
57	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		2928583
58	Romanov K.Yu. (kostik)	300	0	12	2019-07-25 08:42:10		2936645
59	Kordyum A. (alko58)	219	0	12	2019-07-12 15:58:52		2954929
60	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		2999007
61	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3138982
62	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3237250
63	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3240431
64	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3382622
65	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3443169
66	Voevutskij S.A. (SergLK)	206	0	45	2018-07-01 13:19:14		3496528
67	Zyrin V.E. (Vezyr)	529	0	29	2018-05-29 14:14:19		3543993
68	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3636060
69	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3639969
70	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3640048
71	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3662677
72	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3676834
73	F (uff)	64	25	95	2018-01-22 15:57:03		3726771
74	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3778439
75	Kordyum A. (alko58)	219	0	101	2017-11-21 18:18:43		3815909
76	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3817670
77	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3818738
78	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3856453
79	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3883570
80	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3916633
81	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3993278
82	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4039823
83	Vorob'ev E.V. (Johnnymnemonic)	154	0	138	2017-06-16 09:15:49		4043972
84	F (uff)	64	25	185	2017-06-01 10:27:49		4065500
85	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4105373
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4167264
87	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4402167
88	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4437640
89	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4516864
90	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4647199
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4689298
92	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4858719
93	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4890406
94	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		4924405
95	Fomichev A.V. (Fomichev)	192	0	101	2015-10-07 11:21:04		4933767
96	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4959613
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4973917
98	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		4975603
99	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		4987212
100	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		4990783

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