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SQL exercises

October 12, 20:49 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: 13891

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		3108
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		4987
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		17995
13	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		51158
14	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		65228
15	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		75736
16	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		105556
17	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		108448
18	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		117156
19	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		119924
20	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		170051
21	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		204480
22	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		238144
23	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		248372
24	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		249214
25	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		279926
26	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		373153
27	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		448993
28	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		660696
29	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		894819
30	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		907008
31	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1054861
32	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1056169
33	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1078919
34	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1188458
35	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1300523
36	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1300523
37	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1329679
38	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1356200
39	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1369832
40	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1435874
41	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1439188
42	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1441577
43	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1474242
44	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1526505
45	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1551082
46	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1867659
47	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1971648
48	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2067813
49	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2107021
50	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2223931
51	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2370512
52	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2622268
53	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2750620
54	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2884974
55	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2927161
56	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2930908
57	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3172974
58	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3240337
59	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3314667
60	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3379621
61	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3387592
62	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3427107
63	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3450834
64	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3761223
65	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3788505
66	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3796567
67	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3814851
68	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3858929
69	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3998904
70	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4097172
71	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4100353
72	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4242544
73	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4303091
74	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4356450
75	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4403915
76	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4495982
77	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4499891
78	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4499970
79	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4522599
80	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4536756
81	F (uff)	66	23	95	2018-01-22 15:57:03		4586692
82	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4638361
83	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4675831
84	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4677592
85	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4678660
86	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4716375
87	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4743492
88	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4776555
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4853200
90	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4899745
91	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4903894
92	F (uff)	66	23	185	2017-06-01 10:27:49		4925422
93	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4965295
94	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5027186
95	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5262089
96	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5297562
97	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5376785
98	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5507121
99	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5549220
100	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5718641

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