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SQL exercises

January 24, 13:51 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: 14970

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Chuvstvin M. (chuvstvinmaxim)	112	7	139	2025-01-24 12:39:09	2025-01-24 13:28:24	49
2	Chuvstvin M. (chuvstvinmaxim)	112	7	142	2025-01-21 19:19:05	2025-01-24 01:49:28	3270
3	Sarkis'yan G. (gennadi_s)	35	66	160	2025-01-23 14:44:59		1386
4	Sarkis'yan G. (gennadi_s)	35	66	159	2025-01-16 15:33:13	2025-01-21 15:44:02	7211
5	Chuvstvin M. (chuvstvinmaxim)	112	7	197	2025-01-21 00:09:37	2025-01-21 01:41:48	92
6	Chuvstvin M. (chuvstvinmaxim)	112	7	258	2025-01-21 00:01:28		5150
7	Chuvstvin M. (chuvstvinmaxim)	112	7	192	2025-01-20 10:46:29	2025-01-20 23:52:58	786
8	Chuvstvin M. (chuvstvinmaxim)	112	7	138	2025-01-14 01:48:28	2025-01-20 01:53:02	8645
9	Sarkis'yan G. (gennadi_s)	35	66	158	2025-01-12 14:21:35	2025-01-14 17:52:54	3091
10	Koptel'tsev V. (selber)	24	98	143	2025-01-14 06:44:30		14827
11	Chuvstvin M. (chuvstvinmaxim)	112	7	137	2025-01-06 01:47:12	2025-01-14 01:07:31	11480
12	Makarov I.A. (_Bkmz_)	93	9	99	2025-01-12 10:29:27	2025-01-12 16:28:41	359
13	Makarov I.A. (_Bkmz_)	93	9	93	2025-01-11 14:46:23	2025-01-11 19:10:48	264
14	Makarov I.A. (_Bkmz_)	93	9	82	2025-01-11 10:14:35	2025-01-11 14:05:11	231
15	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		153002
16	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		154311
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		177061
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		204501
19	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		286600
20	Slavutinskij V.V. (Vasilko)	436	0	5	2024-04-22 17:26:35		398665
21	Slavutinskij V.V. (Vasilko)	436	0	7	2024-04-22 17:26:21		398665
22	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		427821
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		454341
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		467973
25	Kurbanoff N.I. (Nariman Kurbanoff)	98	9	305	2024-01-19 17:35:31		534016
26	Kurbanoff N.I. (Nariman Kurbanoff)	98	9	306	2024-01-17 10:21:39		537329
27	Kurbanoff N.I. (Nariman Kurbanoff)	98	9	71	2024-01-15 18:32:03		539719
28	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		572384
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		617560
30	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		624647
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		649223
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		894255
33	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		931811
34	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		965801
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1069789
36	Koptel'tsev V. (selber)	24	98	237	2022-11-06 21:16:51		1165954
37	Borisenkov D.V. (xuser)	97	9	173	2022-10-10 15:48:20		1205163
38	Lukov D.R. (Gendalf)	237	0	90	2022-07-21 11:18:50		1322072
39	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1468653
40	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1582703
41	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1720410
42	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1848762
43	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1983116
44	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2025303
45	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2029050
46	Kozharinov A. (bubala)	202	0	10	2020-09-30 09:55:07		2271116
47	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2338479
48	Koptel'tsev V. (selber)	24	98	259	2020-06-24 00:22:07		2412809
49	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2477763
50	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2485734
51	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2525248
52	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2548976
53	Fokin A. (Vizitor )	43	52	217	2019-08-18 21:46:14		2859365
54	Bazavluk M. (DoNotLook)	95	9	141	2019-07-30 23:04:12		2886647
55	Romanov K.Yu. (kostik)	297	0	12	2019-07-25 08:42:10		2894709
56	Kordyum A. (alko58)	218	0	12	2019-07-12 15:58:52		2912992
57	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		2957071
58	Mal'tsev A.V. (Palkin)	110	8	218	2019-03-06 20:25:17		3097046
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3195314
60	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		3198495
61	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		3340686
62	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3401233
63	Voevutskij S.A. (SergLK)	206	0	45	2018-07-01 13:19:14		3454592
64	Zyrin V.E. (Vezyr)	527	0	29	2018-05-29 14:14:19		3502057
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3594123
66	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3598033
67	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3598111
68	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3620741
69	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3634898
70	F (uff)	64	25	95	2018-01-22 15:57:03		3684834
71	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3736502
72	Kordyum A. (alko58)	218	0	101	2017-11-21 18:18:43		3773972
73	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3775734
74	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3776802
75	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3814517
76	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3841634
77	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3874697
78	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3951342
79	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3997886
80	Vorob'ev E.V. (Johnnymnemonic)	154	0	138	2017-06-16 09:15:49		4002035
81	F (uff)	64	25	185	2017-06-01 10:27:49		4023563
82	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4063436
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4125327
84	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4360231
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4395704
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4474927
87	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4605262
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4647362
89	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4816782
90	Maslyaev V.S. (Velmont)	88	11	170	2015-11-06 14:01:20		4848470
91	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		4882469
92	Fomichev A.V. (Fomichev)	192	0	101	2015-10-07 11:21:04		4891830
93	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4917676
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4931980
95	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		4933666
96	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4945276
97	Chebykin D. (GriGrim)	38	62	217	2015-08-28 21:04:30		4948847
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		4952178
99	Maslyaev V.S. (Velmont)	88	11	140	2015-07-27 05:27:50		4995863
100	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		4997130

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