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SQL exercises

October 14, 10:01 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: 15190

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		1116
2	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		137329
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		259049
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		333105
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		341204
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		371452
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		383640
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		531493
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		532801
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		555552
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		582992
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		665091
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		777155
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		777156
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		806311
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		832832
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		846464
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		912506
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		915820
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		918210
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		950875
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		996050
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1003137
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1027714
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1272746
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1310302
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1344291
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1448280
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1544445
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1583654
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1700563
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1847144
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1961194
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2098901
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2227253
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2361607
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2403793
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2407541
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2649607
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2716970
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2791300
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2856254
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2864224
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2903739
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2927466
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3237856
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3265138
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3273200
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3291483
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3335562
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3475537
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3573804
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3576985
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3719176
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3779723
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3833083
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3880548
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3972614
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3976523
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3976602
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3999232
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4013388
64	F (uff)	65	25	95	2018-01-22 15:57:03		4063325
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4114993
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4152463
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4154224
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4155293
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4193008
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4220124
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4253187
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4329832
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4376377
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4380526
75	F (uff)	65	25	185	2017-06-01 10:27:49		4402054
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4441927
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4503818
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4738722
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4774194
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4853418
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4983753
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5025852
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5195273
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5226961
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5260959
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5270321
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5296167
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5310471
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5312157
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5323766
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5327337
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5330668
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5374354
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5375621
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5384183
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5393913
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5402540
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5632979
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5634605
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5682766

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