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SQL exercises

November 25, 12:09 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: 15302

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	19	128	187	2025-11-21 15:27:25		5562
2	Sarkis'yan G. (gennadi_s)	19	128	186	2025-11-12 16:36:56	2025-11-14 15:14:47	2798
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		197936
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		319656
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		393712
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		401811
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		432059
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		444248
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		592100
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		593408
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		616159
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		643599
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		725698
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		837762
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		837763
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		866919
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		893439
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		907071
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		973114
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		976427
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		978817
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1011482
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1056658
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1063744
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1088321
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1333353
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1370909
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1404899
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1508887
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1605052
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1644261
32	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1761170
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1907751
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2159508
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2287860
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2422214
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2464400
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2468148
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2710214
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2777577
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2851907
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2916861
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2924832
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2964346
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2988073
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3298463
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3325745
48	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3333807
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3352090
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3396169
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3536144
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3634412
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3637593
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3779784
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3840331
56	Voevutskij S.A. (SergLK)	213	0	45	2018-07-01 13:19:14		3893690
57	Zyrin V.E. (Vezyr)	539	0	29	2018-05-29 14:14:19		3941155
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4033221
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4037130
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4037209
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4059839
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4073996
63	F (uff)	65	25	95	2018-01-22 15:57:03		4123932
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4175600
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4213070
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4214832
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4215900
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4253615
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4280732
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4313794
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4390439
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4436984
73	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4441133
74	F (uff)	65	25	185	2017-06-01 10:27:49		4462661
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4502534
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4564425
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4799329
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4834802
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4914025
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5044360
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5086460
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5255880
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5287568
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5321567
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5330928
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5356774
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5371078
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5372764
89	Varenikov D.M. (Dmitriy Varenikov)	18	128	263	2015-08-31 08:35:37		5384373
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5387945
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5391276
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5434961
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5436228
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5444790
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5454520
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5463147
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5693586
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5695212
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5743373
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5771533

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