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SQL exercises

October 11, 15:34 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: 13886

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		1353
2	Sarkis'yan G. (gennadi_s)	14	188	208	2026-10-08 15:07:00	2026-10-10 12:57:58	2751
3	Safronov P.A. (Paulus73)	124	4	140	2026-10-09 09:42:14		3232
4	Safronov P.A. (Paulus73)	124	4	142	2026-10-08 11:19:23	2026-10-08 22:44:52	685
5	Safronov P.A. (Paulus73)	124	4	139	2026-10-08 10:01:07	2026-10-08 11:01:43	61
6	Safronov P.A. (Paulus73)	124	4	138	2026-10-06 09:41:15	2026-10-07 02:54:18	1033
7	Filippkin D.V. (_dimon_)	2	260	240	2026-10-05 14:13:38	2026-10-06 15:58:40	1545
8	Safronov P.A. (Paulus73)	124	4	53	2026-10-05 09:54:21	2026-10-05 12:48:36	174
9	Vinogradova S.M. (Tigra1)	125	4	140	2026-10-04 15:59:22	2026-10-05 11:25:11	1166
10	Vinogradova S.M. (Tigra1)	125	4	139	2026-10-03 08:58:36	2026-10-03 17:36:51	518
11	Filippkin D.V. (_dimon_)	2	260	53	2026-10-02 10:34:22	2026-10-02 13:34:56	181
12	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		16241
13	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		49404
14	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		63473
15	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		73982
16	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		103801
17	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		106693
18	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		115401
19	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		118169
20	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		168296
21	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		202725
22	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		236389
23	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		246617
24	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		247459
25	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		278171
26	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		371398
27	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		447238
28	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		658942
29	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		893065
30	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		905253
31	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1053106
32	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1054414
33	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1077165
34	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1186703
35	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1298768
36	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1298768
37	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1327924
38	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1354445
39	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1368077
40	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1434119
41	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1437433
42	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1439823
43	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1472487
44	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1524750
45	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1549327
46	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1865904
47	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1969893
48	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2066058
49	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2105266
50	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2222176
51	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2368757
52	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2620514
53	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2748866
54	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2883219
55	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2925406
56	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2929153
57	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3171219
58	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3238582
59	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3312912
60	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3377867
61	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3385837
62	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3425352
63	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3449079
64	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3759468
65	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3786750
66	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3794812
67	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3813096
68	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3857174
69	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3997149
70	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4095417
71	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4098598
72	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4240789
73	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4301336
74	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4354695
75	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4402160
76	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4494227
77	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4498136
78	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4498215
79	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4520844
80	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4535001
81	F (uff)	66	23	95	2018-01-22 15:57:03		4584938
82	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4636606
83	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4674076
84	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4675837
85	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4676905
86	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4714620
87	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4741737
88	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4774800
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4851445
90	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4897990
91	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4902139
92	F (uff)	66	23	185	2017-06-01 10:27:49		4923667
93	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4963540
94	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5025431
95	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5260334
96	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5295807
97	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5375030
98	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5505366
99	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5547465
100	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5716886

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