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SQL exercises

October 06, 01:04 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		42420
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		125271
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		246992
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		321048
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		329146
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		359394
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		371583
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		519436
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		520744
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		543494
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		570934
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		653033
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		765098
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		765098
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		794254
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		820775
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		834406
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		900449
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		903763
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		906152
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		938817
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		983993
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		991080
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1015656
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1260688
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1298244
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1332234
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1436223
30	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1532387
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1571596
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1688505
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1835087
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1949136
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2086843
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2215195
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2349549
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2391736
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2395483
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2637549
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2704912
42	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2779242
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2844196
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2852167
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2891681
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2915409
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3225798
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3253080
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3261142
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3279425
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3323504
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3463479
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3561747
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3564928
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3707119
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3767666
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3821025
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3868490
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3960556
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3964466
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3964544
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3987174
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4001331
64	F (uff)	65	25	95	2018-01-22 15:57:03		4051267
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4102936
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4140405
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4142167
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4143235
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4180950
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4208067
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4241130
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4317775
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4364319
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4368468
75	F (uff)	65	25	185	2017-06-01 10:27:49		4389996
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4429869
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4491760
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4726664
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4762137
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4841360
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4971695
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5013795
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5183215
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5214903
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5248902
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5258263
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5284109
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5298413
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5300099
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5311709
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5315280
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5318611
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5362296
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5363563
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5372125
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5381855
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5390482
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5620921
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5622548
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5670708

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