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SQL exercises

May 05, 10:07 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: 15036

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	29	84	168	2025-05-02 13:19:35		4128
2	Sarkis'yan G. (gennadi_s)	29	84	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	Sarkis'yan G. (gennadi_s)	29	84	165	2025-04-24 12:05:17	2025-04-25 11:36:46	1411
5	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		25775
6	Fomichev A.V. (Fomichev)	194	0	7	2025-02-25 02:16:37		99831
7	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		107930
8	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		138178
9	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		150366
10	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		298219
11	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		299527
12	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		322278
13	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		349718
14	Zajtsev V.S. (Sleeping)	21	112	164	2024-07-09 13:11:22		431816
15	Slavutinskij V.V. (Vasilko)	444	0	5	2024-04-22 17:26:35		543881
16	Slavutinskij V.V. (Vasilko)	444	0	7	2024-04-22 17:26:21		543881
17	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		573037
18	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		599558
19	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		613190
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		679232
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		682546
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		684936
23	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		717600
24	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		762776
25	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		769863
26	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		794440
27	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1039471
28	Zajtsev V.S. (Sleeping)	21	112	150	2023-04-18 11:40:16		1077027
29	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1111017
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1215006
31	Koptel'tsev V. (selber)	20	113	237	2022-11-06 21:16:51		1311171
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1350379
33	Lukov D.R. (Gendalf)	239	0	90	2022-07-21 11:18:50		1467289
34	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1613870
35	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1727920
36	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1865627
37	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1993979
38	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2128332
39	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2170519
40	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2174266
41	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2416332
42	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2483695
43	Koptel'tsev V. (selber)	20	113	259	2020-06-24 00:22:07		2558025
44	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2622980
45	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2630950
46	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2670465
47	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2694192
48	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3004581
49	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3031863
50	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3039925
51	Kordyum A. (alko58)	222	0	12	2019-07-12 15:58:52		3058209
52	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3102287
53	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3242262
54	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3340530
55	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3343711
56	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3485902
57	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3546449
58	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3599808
59	Zyrin V.E. (Vezyr)	536	0	29	2018-05-29 14:14:19		3647273
60	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3739340
61	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3743249
62	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3743328
63	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3765957
64	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3780114
65	F (uff)	64	25	95	2018-01-22 15:57:03		3830051
66	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3881719
67	Kordyum A. (alko58)	222	0	101	2017-11-21 18:18:43		3919189
68	Zajtsev V.S. (Sleeping)	21	112	190	2017-11-20 12:57:31		3920950
69	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3922018
70	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3959733
71	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3986850
72	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		4019913
73	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4096558
74	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4143103
75	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4147252
76	F (uff)	64	25	185	2017-06-01 10:27:49		4168780
77	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4208653
78	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4270544
79	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4505447
80	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4540920
81	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4620143
82	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4750479
83	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4792578
84	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4961999
85	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4993686
86	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5027685
87	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		5037047
88	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5062893
89	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5077197
90	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5078883
91	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5090492
92	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5094063
93	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5097394
94	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5141080
95	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5142347
96	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5150909
97	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5160639
98	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5169266
99	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5399704
100	Skorohod I. (Dracul4ik)	77	15	252	2015-01-27 11:56:41		5401331

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