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SQL exercises

September 30, 12:06 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: 13879

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Kostomarov A.V. (al29)	5	247	53	2026-09-30 08:53:59		192
2	Vinogradova S.M. (Tigra1)	148	0	53	2026-09-27 16:28:34	2026-09-27 18:57:12	149
3	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31	2026-09-27 11:56:35	5618
4	Sarkis'yan G. (gennadi_s)	14	187	303	2026-09-26 14:18:02	2026-09-26 14:40:37	23
5	Koptel'tsev V. (selber)	19	133	53	2026-09-20 05:35:11	2026-09-23 22:59:05	5364
6	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12	2026-09-19 18:45:38	1495
7	Krasovskij E.A. (pegoopik)	1	266	53	2026-09-18 15:39:39	2026-09-18 15:39:44	0
8	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		33355
9	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		47424
10	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		57933
11	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		87752
12	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		90645
13	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		99353
14	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		102121
15	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		152247
16	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		186676
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		220341
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		230569
19	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		231411
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		262123
21	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		355350
22	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		431190
23	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		642893
24	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		877016
25	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		889205
26	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1037058
27	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1038366
28	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1061116
29	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1170655
30	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1282720
31	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1282720
32	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1311876
33	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1338397
34	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1352028
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1418071
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1421385
37	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1423774
38	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1456439
39	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1508702
40	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1533278
41	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1849856
42	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1953845
43	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2050009
44	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2089218
45	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2206127
46	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2352709
47	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2604465
48	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2732817
49	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2867171
50	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2909358
51	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2913105
52	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3155171
53	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3222534
54	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3296864
55	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3361818
56	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3369789
57	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3409303
58	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3433031
59	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3743420
60	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3770702
61	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3778764
62	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3797047
63	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3841126
64	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3981101
65	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4079369
66	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4082550
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4224741
68	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4285288
69	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4338647
70	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4386112
71	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4478179
72	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4482088
73	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4482166
74	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4504796
75	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4518953
76	F (uff)	65	25	95	2018-01-22 15:57:03		4568889
77	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4620558
78	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4658028
79	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4659789
80	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4660857
81	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4698572
82	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4725689
83	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4758752
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4835397
85	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4881941
86	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4886090
87	F (uff)	65	25	185	2017-06-01 10:27:49		4907618
88	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4947491
89	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5009382
90	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5244286
91	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5279759
92	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5358982
93	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5489318
94	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5531417
95	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5700837
96	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5732525
97	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5766524
98	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5775885
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5801731
100	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5816035

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