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SQL exercises

July 14, 01:27 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: 15138

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Safronov P.A. (Paulus73)	134	0	137	2026-07-13 10:19:08	2026-07-14 00:12:15	833
2	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		2792
3	Safronov P.A. (Paulus73)	134	0	136	2026-07-10 10:15:27	2026-07-10 15:00:38	285
4	Safronov P.A. (Paulus73)	134	0	135	2026-07-09 10:47:01	2026-07-10 00:27:56	821
5	Safronov P.A. (Paulus73)	134	0	134	2026-07-08 10:21:00	2026-07-08 15:48:42	328
6	Safronov P.A. (Paulus73)	134	0	133	2026-07-07 10:28:03	2026-07-07 11:59:53	92
7	Koptel'tsev V. (selber)	19	130	241	2026-05-23 20:23:43	2026-07-07 07:38:38	64035
8	Safronov P.A. (Paulus73)	134	0	132	2026-07-06 11:09:01	2026-07-06 18:52:03	463
9	Safronov P.A. (Paulus73)	134	0	131	2026-07-03 10:10:01	2026-07-03 11:05:45	56
10	Safronov P.A. (Paulus73)	134	0	130	2026-07-02 11:40:05	2026-07-02 16:41:00	301
11	Safronov P.A. (Paulus73)	134	0	129	2026-07-02 10:33:02	2026-07-02 11:27:26	54
12	Safronov P.A. (Paulus73)	134	0	128	2026-07-01 13:36:05	2026-07-01 14:40:25	64
13	Safronov P.A. (Paulus73)	134	0	127	2026-07-01 10:38:09	2026-07-01 13:07:01	149
14	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		39288
15	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		73717
16	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		94323
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		107382
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		117610
19	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		118452
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		149164
21	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		242391
22	Lukov D.R. (Gendalf)	246	0	32	2025-12-05 01:36:21		318231
23	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		529934
24	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		733809
25	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		764057
26	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		776246
27	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		924098
28	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		925406
29	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		948157
30	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1057696
31	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1169760
32	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1169761
33	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1198917
34	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1225437
35	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1239069
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1305112
37	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1308425
38	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1310815
39	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1343480
40	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1395742
41	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1420319
42	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1736897
43	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1840885
44	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1937050
45	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1976259
46	Lukov D.R. (Gendalf)	246	0	90	2022-07-21 11:18:50		2093168
47	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2239749
48	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2491506
49	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2619858
50	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2754212
51	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2796398
52	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2800146
53	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3042212
54	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3109575
55	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3183905
56	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3248859
57	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3256830
58	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3296344
59	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3320072
60	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3630461
61	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3657743
62	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3665805
63	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3684088
64	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3728167
65	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3868142
66	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3966410
67	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3969591
68	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4111782
69	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4172329
70	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4225688
71	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4273153
72	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4365219
73	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4369129
74	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4369207
75	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4391837
76	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4405994
77	F (uff)	65	25	95	2018-01-22 15:57:03		4455930
78	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4507598
79	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4545068
80	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4546830
81	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4547898
82	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4585613
83	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4612730
84	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4645792
85	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4722437
86	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4768982
87	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4773131
88	F (uff)	65	25	185	2017-06-01 10:27:49		4794659
89	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4834532
90	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4896423
91	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5131327
92	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5166800
93	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5246023
94	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5376358
95	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5418458
96	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5587878
97	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5619566
98	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5653565
99	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5662926
100	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5688772

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