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SQL exercises

October 07, 00:31 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: 15175

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
2	Koptel'tsev V. (selber)	21	116	240	2025-09-08 22:07:14	2025-09-24 08:05:14	22198
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		126678
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		248399
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		322455
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		330553
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		360801
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		372990
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		520843
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		522151
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		544901
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		572341
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		654440
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		766505
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		766505
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		795661
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		822182
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		835813
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		901856
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		905170
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		907559
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		940224
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		985400
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		992487
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1017063
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1262095
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1299651
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1333641
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1437630
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1533794
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1573003
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1689912
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1836494
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1950543
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2088250
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2216602
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2350956
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2393143
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2396890
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2638956
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2706319
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2780649
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2845603
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2853574
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2893088
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2916816
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3227205
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3254487
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3262549
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3280832
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3324911
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3464886
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3563154
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3566335
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3708526
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3769073
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3822432
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3869897
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3961963
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3965873
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3965951
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3988581
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4002738
64	F (uff)	65	25	95	2018-01-22 15:57:03		4052674
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4104343
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4141812
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4143574
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4144642
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4182357
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4209474
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4242537
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4319182
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4365726
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4369875
75	F (uff)	65	25	185	2017-06-01 10:27:49		4391403
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4431276
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4493167
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4728071
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4763544
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4842767
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4973102
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5015202
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5184622
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5216310
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5250309
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5259670
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5285516
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5299820
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5301506
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5313116
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5316687
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5320018
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5363703
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5364970
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5373532
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5383262
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5391889
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5622328
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5623954
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5672115

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