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SQL exercises

September 12, 23:37 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: 15160

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Krasovskij E.A. (pegoopik)	1	266	303	2026-09-11 20:13:12	2026-09-11 20:13:42	1
2	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20	2026-09-11 10:52:12	7003
3	Sarkis'yan G. (gennadi_s)	14	187	207	2026-09-08 14:40:13	2026-09-10 12:22:30	2742
4	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		8127
5	Vinogradova S.M. (Tigra1)	148	0	137	2026-08-30 14:15:52	2026-08-31 22:19:52	1924
6	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		22196
7	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		32705
8	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		62524
9	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		65416
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		74125
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		76892
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		127019
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		161448
14	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		195112
15	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		205340
16	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		206182
17	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		236894
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		330121
19	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		405961
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		617665
21	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		851788
22	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		863976
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1011829
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1013137
25	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1035888
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1145426
27	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1257491
28	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1257491
29	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1286647
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1313168
31	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1326800
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1392842
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1396156
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1398546
35	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1431211
36	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1483473
37	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1508050
38	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1824627
39	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1928616
40	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2024781
41	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2063989
42	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2180899
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2327480
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2579237
45	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2707589
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2841943
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2884129
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2887877
49	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3129943
50	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3197306
51	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3271636
52	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3336590
53	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3344560
54	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3384075
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3407802
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3718191
57	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3745473
58	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3753536
59	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3771819
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3815897
61	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3955872
62	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4054140
63	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4057321
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4199512
65	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4260059
66	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4313418
67	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4360883
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4452950
69	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4456859
70	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4456938
71	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4479567
72	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4493724
73	F (uff)	65	25	95	2018-01-22 15:57:03		4543661
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4595329
75	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4632799
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4634560
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4635628
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4673343
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4700460
80	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4733523
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4810168
82	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4856713
83	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4860862
84	F (uff)	65	25	185	2017-06-01 10:27:49		4882390
85	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4922263
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4984154
87	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5219057
88	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5254530
89	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5333754
90	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5464089
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5506188
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5675609
93	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5707296
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5741295
95	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5750657
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5776503
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5790807
98	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5792493
99	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5804102
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5807673

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