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SQL exercises

January 20, 20:59 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: 14919

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Chuvstvin M. (chuvstvinmaxim)	135	0	192	2025-01-20 10:46:29		613
2	Chuvstvin M. (chuvstvinmaxim)	135	0	138	2025-01-14 01:48:28	2025-01-20 01:53:02	8645
3	Sarkis'yan G. (gennadi_s)	37	63	159	2025-01-16 15:33:13		6086
4	Sarkis'yan G. (gennadi_s)	37	63	158	2025-01-12 14:21:35	2025-01-14 17:52:54	3091
5	Koptel'tsev V. (selber)	24	98	143	2025-01-14 06:44:30		9495
6	Chuvstvin M. (chuvstvinmaxim)	135	0	137	2025-01-06 01:47:12	2025-01-14 01:07:31	11480
7	Makarov I.A. (_Bkmz_)	93	9	99	2025-01-12 10:29:27	2025-01-12 16:28:41	359
8	Makarov I.A. (_Bkmz_)	93	9	93	2025-01-11 14:46:23	2025-01-11 19:10:48	264
9	Makarov I.A. (_Bkmz_)	93	9	82	2025-01-11 10:14:35	2025-01-11 14:05:11	231
10	Makarov I.A. (_Bkmz_)	93	9	95	2025-01-08 16:42:01	2025-01-08 19:36:37	175
11	Sarkis'yan G. (gennadi_s)	37	63	157	2024-12-24 12:24:12	2025-01-08 14:04:35	21700
12	Makarov I.A. (_Bkmz_)	93	9	91	2025-01-08 12:14:52	2025-01-08 12:57:18	42
13	Makarov I.A. (_Bkmz_)	93	9	77	2025-01-08 10:28:07	2025-01-08 11:45:18	77
14	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		147671
15	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		148979
16	Frolov K.A. (Murderface_)	132	0	138	2024-09-23 14:49:59		171729
17	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		199170
18	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		281268
19	Slavutinskij V.V. (Vasilko)	436	0	5	2024-04-22 17:26:35		393333
20	Slavutinskij V.V. (Vasilko)	436	0	7	2024-04-22 17:26:21		393333
21	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		422489
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		449010
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		462642
24	Kurbanoff N.I. (Nariman Kurbanoff)	98	9	305	2024-01-19 17:35:31		528684
25	Kurbanoff N.I. (Nariman Kurbanoff)	98	9	306	2024-01-17 10:21:39		531998
26	Kurbanoff N.I. (Nariman Kurbanoff)	98	9	71	2024-01-15 18:32:03		534387
27	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		567052
28	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		612228
29	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		619315
30	Rudikov E. (cubie)	133	0	138	2023-10-31 17:27:54		643892
31	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		888923
32	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		926479
33	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		960469
34	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1064458
35	Koptel'tsev V. (selber)	24	98	237	2022-11-06 21:16:51		1160623
36	Borisenkov D.V. (xuser)	97	9	173	2022-10-10 15:48:20		1199831
37	Lukov D.R. (Gendalf)	237	0	90	2022-07-21 11:18:50		1316741
38	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1463322
39	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1577371
40	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1715078
41	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1843430
42	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1977784
43	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2019971
44	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2023718
45	Kozharinov A. (bubala)	202	0	10	2020-09-30 09:55:07		2265784
46	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2333147
47	Koptel'tsev V. (selber)	24	98	259	2020-06-24 00:22:07		2407477
48	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2472431
49	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2480402
50	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2519917
51	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2543644
52	Fokin A. (Vizitor )	43	52	217	2019-08-18 21:46:14		2854033
53	Bazavluk M. (DoNotLook)	95	9	141	2019-07-30 23:04:12		2881315
54	Romanov K.Yu. (kostik)	297	0	12	2019-07-25 08:42:10		2889377
55	Kordyum A. (alko58)	218	0	12	2019-07-12 15:58:52		2907661
56	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		2951739
57	Mal'tsev A.V. (Palkin)	110	8	218	2019-03-06 20:25:17		3091714
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3189982
59	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		3193163
60	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		3335354
61	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3395901
62	Voevutskij S.A. (SergLK)	206	0	45	2018-07-01 13:19:14		3449260
63	Zyrin V.E. (Vezyr)	526	0	29	2018-05-29 14:14:19		3496725
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3588792
65	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3592701
66	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3592780
67	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3615409
68	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3629566
69	F (uff)	64	25	95	2018-01-22 15:57:03		3679502
70	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3731171
71	Kordyum A. (alko58)	218	0	101	2017-11-21 18:18:43		3768641
72	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3770402
73	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3771470
74	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3809185
75	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3836302
76	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3869365
77	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3946010
78	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3992555
79	Vorob'ev E.V. (Johnnymnemonic)	154	0	138	2017-06-16 09:15:49		3996704
80	F (uff)	64	25	185	2017-06-01 10:27:49		4018232
81	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4058105
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4119996
83	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4354899
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4390372
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4469595
86	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4599931
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4642030
88	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4811451
89	Maslyaev V.S. (Velmont)	88	11	170	2015-11-06 14:01:20		4843138
90	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		4877137
91	Fomichev A.V. (Fomichev)	192	0	101	2015-10-07 11:21:04		4886498
92	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4912345
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4926649
94	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		4928335
95	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4939944
96	Chebykin D. (GriGrim)	38	62	217	2015-08-28 21:04:30		4943515
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		4946846
98	Maslyaev V.S. (Velmont)	88	11	140	2015-07-27 05:27:50		4990532
99	Khromulyak O.M. (ChOleg)	119	5	150	2015-07-26 08:20:51		4991799
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5000360

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