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SQL exercises

October 10, 19:56 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: 13885

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		175
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		2054
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		15062
13	Vinogradova S.M. (Tigra1)	125	4	53	2026-09-27 16:28:34	2026-09-27 18:57:12	149
14	Sigankov V.I. (vasilyvanc)	33	72	53	2026-09-23 14:18:31	2026-09-27 11:56:35	5618
15	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		48225
16	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		62294
17	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		72803
18	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		102622
19	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		105515
20	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		114223
21	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		116991
22	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		167117
23	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		201546
24	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		235211
25	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		245439
26	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		246281
27	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		276993
28	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		370220
29	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		446060
30	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		657763
31	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		891886
32	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		904075
33	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1051927
34	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1053236
35	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1075986
36	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1185525
37	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1297590
38	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1297590
39	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1326746
40	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1353267
41	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1366898
42	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1432941
43	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1436255
44	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1438644
45	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1471309
46	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1523572
47	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1548148
48	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1864726
49	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1968715
50	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2064879
51	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2104088
52	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2220997
53	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2367579
54	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2619335
55	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2747687
56	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2882041
57	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2924228
58	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2927975
59	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3170041
60	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3237404
61	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3311734
62	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3376688
63	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3384659
64	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3424173
65	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3447901
66	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3758290
67	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3785572
68	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3793634
69	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3811917
70	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3855996
71	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3995971
72	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4094239
73	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4097420
74	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4239611
75	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4300158
76	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4353517
77	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4400982
78	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4493048
79	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4496958
80	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4497036
81	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4519666
82	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4533823
83	F (uff)	66	23	95	2018-01-22 15:57:03		4583759
84	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4635428
85	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4672897
86	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4674659
87	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4675727
88	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4713442
89	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4740559
90	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4773622
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4850267
92	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4896811
93	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4900960
94	F (uff)	66	23	185	2017-06-01 10:27:49		4922488
95	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4962361
96	Movlyanov A.P. (Oct)	13	191	218	2017-03-22 18:23:50		5024252
97	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5259156
98	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5294629
99	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5373852
100	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5504187

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