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SQL exercises

September 12, 13:42 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: 15158

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		7532
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		21601
7	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		32110
8	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		61929
9	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		64821
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		73530
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		76298
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		126424
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		160853
14	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		194518
15	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		204746
16	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		205588
17	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		236299
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		329527
19	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		405366
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		617070
21	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		851193
22	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		863381
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1011234
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1012542
25	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1035293
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1144831
27	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1256896
28	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1256896
29	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1286052
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1312573
31	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1326205
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1392247
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1395561
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1397951
35	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1430616
36	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1482878
37	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1507455
38	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1824032
39	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1928021
40	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2024186
41	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2063394
42	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2180304
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2326885
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2578642
45	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2706994
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2841348
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2883534
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2887282
49	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3129348
50	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3196711
51	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3271041
52	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3335995
53	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3343965
54	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3383480
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3407207
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3717597
57	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3744879
58	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3752941
59	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3771224
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3815302
61	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3955278
62	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4053545
63	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4056726
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4198917
65	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4259464
66	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4312824
67	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4360288
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4452355
69	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4456264
70	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4456343
71	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4478972
72	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4493129
73	F (uff)	65	25	95	2018-01-22 15:57:03		4543066
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4594734
75	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4632204
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4633965
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4635034
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4672748
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4699865
80	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4732928
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4809573
82	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4856118
83	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4860267
84	F (uff)	65	25	185	2017-06-01 10:27:49		4881795
85	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4921668
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4983559
87	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5218463
88	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5253935
89	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5333159
90	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5463494
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5505593
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5675014
93	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5706701
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5740700
95	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5750062
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5775908
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5790212
98	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5791898
99	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5803507
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5807078

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