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SQL exercises

October 24, 17:54 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: 13903

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	13	192	192	2026-10-17 13:29:17	2026-10-22 14:52:53	7284
2	Frolov K.A. (Murderface_)	136	0	53	2026-10-19 19:02:15		7132
3	Krasovskij E.A. (pegoopik)	1	268	192	2026-10-16 18:51:16	2026-10-16 18:51:23	0
4	Safronov P.A. (Paulus73)	117	6	140	2026-10-09 09:42:14	2026-10-15 12:25:59	8804
5	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		20213
6	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		35100
7	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		68263
8	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		82332
9	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		92841
10	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		122660
11	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		125553
12	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		134261
13	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		137029
14	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		187155
15	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		221584
16	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		255249
17	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		265477
18	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		266319
19	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		297031
20	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		390258
21	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		466098
22	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		677801
23	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		911924
24	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		924113
25	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1071966
26	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1073274
27	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1096024
28	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1205563
29	Slavutinskij V.V. (Vasilko)	459	0	5	2024-04-22 17:26:35		1317628
30	Slavutinskij V.V. (Vasilko)	459	0	7	2024-04-22 17:26:21		1317628
31	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1346784
32	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1373305
33	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1386936
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1452979
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1456293
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1458682
37	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1491347
38	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1543610
39	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1568186
40	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1884764
41	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1988753
42	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2084917
43	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2124126
44	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2241035
45	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2387617
46	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2639373
47	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2767725
48	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2902079
49	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2944266
50	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2948013
51	Kozharinov A. (bubala)	215	0	10	2020-09-30 09:55:07		3190079
52	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3257442
53	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3331772
54	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3396726
55	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3404697
56	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3444211
57	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3467939
58	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3778328
59	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3805610
60	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3813672
61	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3831955
62	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3876034
63	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4016009
64	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4114277
65	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4117458
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4259649
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4320196
68	Voevutskij S.A. (SergLK)	221	0	45	2018-07-01 13:19:14		4373555
69	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4421020
70	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4513086
71	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4516996
72	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4517074
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4539704
74	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4553861
75	F (uff)	66	23	95	2018-01-22 15:57:03		4603797
76	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4655466
77	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4692935
78	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4694697
79	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4695765
80	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4733480
81	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4760597
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4793660
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4870305
84	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4916849
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4920998
86	F (uff)	66	23	185	2017-06-01 10:27:49		4942526
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4982399
88	Movlyanov A.P. (Oct)	14	191	218	2017-03-22 18:23:50		5044290
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5279194
90	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5314667
91	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5393890
92	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5524225
93	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5566325
94	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5735745
95	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5767433
96	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5801432
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5810793
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5836639
99	Movlyanov A.P. (Oct)	14	191	194	2015-09-09 14:10:52		5850943
100	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5852629

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