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SQL exercises

October 06, 00:08 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: 15168

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	20	116	240	2025-09-08 22:07:14	2025-09-24 08:05:14	22198
2	Sarkis'yan G. (gennadi_s)	21	115	181	2025-09-06 14:04:35		42364
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		125216
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		246936
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		320992
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		329091
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		359339
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		371527
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		519380
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		520688
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		543439
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		570879
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		652978
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		765042
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		765043
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		794198
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		820719
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		834351
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		900393
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		903707
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		906097
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		938762
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		983937
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		991024
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1015601
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1260633
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1298189
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1332178
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1436167
30	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1532332
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1571541
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1688450
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1835031
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1949081
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2086788
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2215140
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2349494
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2391680
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2395428
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2637494
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2704857
42	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2779187
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2844141
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2852111
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2891626
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2915353
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3225743
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3253025
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3261087
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3279370
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3323449
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3463424
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3561691
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3564872
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3707063
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3767611
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3820970
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3868435
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3960501
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3964410
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3964489
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3987119
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4001275
64	F (uff)	65	25	95	2018-01-22 15:57:03		4051212
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4102880
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4140350
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4142111
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4143180
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4180895
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4208011
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4241074
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4317719
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4364264
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4368413
75	F (uff)	65	25	185	2017-06-01 10:27:49		4389941
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4429814
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4491705
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4726609
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4762082
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4841305
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4971640
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5013739
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5183160
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5214848
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5248846
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5258208
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5284054
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5298358
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5300044
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5311653
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5315224
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5318555
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5362241
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5363508
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5372070
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5381800
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5390427
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5620866
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5622492
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5670653

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