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SQL exercises

July 14, 00:49 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		2755
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		39250
15	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		73679
16	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		94285
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		107344
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		117572
19	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		118414
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		149126
21	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		242353
22	Lukov D.R. (Gendalf)	246	0	32	2025-12-05 01:36:21		318193
23	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		529896
24	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		733771
25	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		764019
26	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		776208
27	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		924061
28	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		925369
29	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		948119
30	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1057658
31	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1169723
32	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1169723
33	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1198879
34	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1225400
35	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1239031
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1305074
37	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1308388
38	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1310777
39	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1343442
40	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1395705
41	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1420281
42	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1736859
43	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1840848
44	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1937012
45	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1976221
46	Lukov D.R. (Gendalf)	246	0	90	2022-07-21 11:18:50		2093130
47	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2239712
48	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2491468
49	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2619820
50	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2754174
51	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2796361
52	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2800108
53	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3042174
54	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3109537
55	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3183867
56	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3248821
57	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3256792
58	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3296306
59	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3320034
60	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3630423
61	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3657705
62	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3665767
63	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3684050
64	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3728129
65	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3868104
66	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3966372
67	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3969553
68	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4111744
69	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4172291
70	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4225650
71	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4273115
72	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4365182
73	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4369091
74	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4369169
75	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4391799
76	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4405956
77	F (uff)	65	25	95	2018-01-22 15:57:03		4455892
78	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4507561
79	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4545031
80	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4546792
81	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4547860
82	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4585575
83	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4612692
84	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4645755
85	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4722400
86	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4768944
87	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4773093
88	F (uff)	65	25	185	2017-06-01 10:27:49		4794621
89	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4834494
90	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4896385
91	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5131289
92	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5166762
93	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5245985
94	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5376321
95	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5418420
96	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5587840
97	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5619528
98	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5653527
99	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5662888
100	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5688734

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