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SQL exercises

July 17, 20:16 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: 15130

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Timofeeva E.V. (Umrikhina)	26	96	24	2026-07-15 10:55:13	2026-07-15 11:24:36	29
2	Safronov P.A. (Paulus73)	134	0	137	2026-07-13 10:19:08	2026-07-14 00:12:15	833
3	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		8242
4	Safronov P.A. (Paulus73)	134	0	136	2026-07-10 10:15:27	2026-07-10 15:00:38	285
5	Safronov P.A. (Paulus73)	134	0	135	2026-07-09 10:47:01	2026-07-10 00:27:56	821
6	Safronov P.A. (Paulus73)	134	0	134	2026-07-08 10:21:00	2026-07-08 15:48:42	328
7	Safronov P.A. (Paulus73)	134	0	133	2026-07-07 10:28:03	2026-07-07 11:59:53	92
8	Koptel'tsev V. (selber)	19	130	241	2026-05-23 20:23:43	2026-07-07 07:38:38	64035
9	Safronov P.A. (Paulus73)	134	0	132	2026-07-06 11:09:01	2026-07-06 18:52:03	463
10	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		44738
11	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		79167
12	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		99773
13	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		112832
14	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		123060
15	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		123902
16	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		154614
17	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		247841
18	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		323681
19	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		535384
20	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		739259
21	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		769507
22	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		781696
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		929548
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		930856
25	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		953607
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1063146
27	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1175210
28	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1175211
29	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1204367
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1230887
31	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1244519
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1310561
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1313875
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1316265
35	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1348930
36	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1401192
37	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1425769
38	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1742347
39	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1846335
40	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1942500
41	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1981709
42	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2098618
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2245199
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2496956
45	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2625308
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2759662
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2801848
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2805596
49	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3047662
50	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3115025
51	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3189355
52	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3254309
53	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3262280
54	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3301794
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3325521
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3635911
57	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3663193
58	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3671255
59	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3689538
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3733617
61	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3873592
62	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3971860
63	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3975041
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4117232
65	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4177779
66	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4231138
67	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4278603
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4370669
69	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4374578
70	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4374657
71	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4397287
72	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4411443
73	F (uff)	65	25	95	2018-01-22 15:57:03		4461380
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4513048
75	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4550518
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4552279
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4553348
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4591063
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4618180
80	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4651242
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4727887
82	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4774432
83	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4778581
84	F (uff)	65	25	185	2017-06-01 10:27:49		4800109
85	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4839982
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4901873
87	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5136777
88	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5172250
89	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5251473
90	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5381808
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5423907
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5593328
93	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5625016
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5659015
95	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5668376
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5694222
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5708526
98	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5710212
99	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5721821
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5725392

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