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SQL exercises

June 24, 17:02 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: 15124

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Williams B. (BW)	35	66	262	2025-04-17 12:32:37	2026-06-24 13:25:33	623573
2	Williams B. (BW)	35	66	24	2026-05-15 13:25:32	2026-06-22 22:34:12	55269
3	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		11423
4	Makarov I.A. (_Bkmz_)	49	40	143	2026-06-12 10:09:54	2026-06-13 03:07:28	1018
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		45852
6	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		45878
7	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		66458
8	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		79517
9	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		89745
10	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		90587
11	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		121299
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		214526
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		290366
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		502069
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		705944
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		736192
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		748381
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		896233
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		897541
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		920292
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1029831
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1141895
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1141896
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1171052
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1197572
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1211204
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1277247
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1280560
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1282950
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1315615
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1367877
32	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1392454
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1709032
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1813020
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1909185
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1948394
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2065303
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2211884
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2463641
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2591993
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2726347
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2768533
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2772281
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3014347
45	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3081710
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3156040
47	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3220994
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3228965
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3268479
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3292206
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3602596
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3629878
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3637940
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3656223
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3700302
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3840277
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3938545
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3941726
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4083917
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4144464
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4197823
62	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4245288
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4337354
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4341263
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4341342
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4363972
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4378129
68	F (uff)	65	25	95	2018-01-22 15:57:03		4428065
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4479733
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4517203
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4518965
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4520033
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4557748
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4584865
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4617927
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4694572
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4741117
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4745266
79	F (uff)	65	25	185	2017-06-01 10:27:49		4766794
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4806667
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4868558
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5103462
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5138935
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5218158
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5348493
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5390593
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5560013
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5591701
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5625700
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5635061
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5660907
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5675211
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5676897
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5688506
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5692078
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5695409
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5739094
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5740361
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5748923
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5758653

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