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SQL exercises

October 31, 23:57 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: 13917

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	13	193	209	2026-10-30 12:41:46	2026-10-30 14:06:57	85
2	Sarkis'yan G. (gennadi_s)	13	193	192	2026-10-17 13:29:17	2026-10-22 14:52:53	7284
3	Frolov K.A. (Murderface_)	136	0	53	2026-10-19 19:02:15		17575
4	Vinogradova S.M. (Tigra1)	125	4	141	2026-10-10 17:01:15		30656
5	Kostomarov A.V. (al29)	5	245	53	2026-09-30 08:53:59		45543
6	Koptel'tsev V. (selber)	18	133	183	2026-09-07 08:11:06		78706
7	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		92776
8	Koptel'tsev V. (selber)	18	133	188	2026-08-21 06:33:00		103284
9	Williams B. (BW)	36	65	252	2026-07-31 13:33:49		133104
10	Williams B. (BW)	36	65	264	2026-07-29 13:21:27		135996
11	Sigankov V.I. (vasilyvanc)	33	72	216	2026-07-23 12:13:08		144704
12	Sigankov V.I. (vasilyvanc)	33	72	241	2026-07-21 14:05:13		147472
13	Zajtsev V.S. (Sleeping)	22	116	241	2026-06-16 18:38:55		197599
14	Chernov D.V. (Kursist)	3	260	241	2026-05-23 20:49:50		232028
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		265692
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		275920
17	Vyazovetskov A.S. (alex_v)	6	243	264	2026-04-22 19:15:17		276762
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		307474
19	Petrov Y. (YuriPetrov)	32	76	210	2026-01-26 17:36:12		400701
20	Lukov D.R. (Gendalf)	248	0	32	2025-12-05 01:36:21		476541
21	Chebykin D. (GriGrim)	39	60	210	2025-07-11 01:12:59		688244
22	Chuvstvin M. (chuvstvinmaxim)	92	9	141	2025-01-29 11:09:56		922368
23	Chuvstvin M. (chuvstvinmaxim)	92	9	258	2025-01-21 00:01:28		934556
24	Lyubomudrov R.G. (born2tilt)	73	20	162	2024-10-10 07:48:40		1082409
25	Lyubomudrov R.G. (born2tilt)	73	20	202	2024-10-09 10:00:37		1083717
26	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1106467
27	Zajtsev V.S. (Sleeping)	22	116	164	2024-07-09 13:11:22		1216006
28	Slavutinskij V.V. (Vasilko)	459	0	5	2024-04-22 17:26:35		1328071
29	Slavutinskij V.V. (Vasilko)	459	0	7	2024-04-22 17:26:21		1328071
30	Williams B. (BW)	36	65	141	2024-04-02 11:30:28		1357227
31	Kukushkin S.A. (smog)	16	151	194	2024-03-15 01:29:39		1383748
32	Latyntsev N.G. (aks_nsk)	54	35	253	2024-03-05 14:17:51		1397380
33	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1463422
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1466736
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1469125
36	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		1501790
37	Boiko D. (Angellore)	9	231	262	2023-11-17 19:04:36		1554053
38	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1578630
39	Shkarednyj I.N. (Gosha)	37	64	198	2023-03-25 21:10:27		1895207
40	Latyntsev N.G. (aks_nsk)	54	35	255	2023-01-12 16:01:39		1999196
41	Koptel'tsev V. (selber)	18	133	237	2022-11-06 21:16:51		2095361
42	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		2134569
43	Lukov D.R. (Gendalf)	248	0	90	2022-07-21 11:18:50		2251479
44	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		2398060
45	Sigankov V.I. (vasilyvanc)	33	72	161	2021-10-17 20:21:01		2649816
46	Fedevych V.I. (labuch_fedev)	38	63	221	2021-07-20 17:09:05		2778168
47	Pusev D.V. (Pusev_Denis)	19	132	234	2021-04-18 09:55:08		2912522
48	Kukushkin S.A. (smog)	16	151	12	2021-03-20 02:48:36		2954709
49	Pusev D.V. (Pusev_Denis)	19	132	159	2021-03-17 12:21:10		2958456
50	Kozharinov A. (bubala)	215	0	10	2020-09-30 09:55:07		3200522
51	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3267885
52	Koptel'tsev V. (selber)	18	133	259	2020-06-24 00:22:07		3342215
53	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3407169
54	Karasyova N.V. (vlksm)	10	223	230	2020-05-04 08:57:25		3415140
55	Fedevych V.I. (labuch_fedev)	38	63	226	2020-04-06 22:22:48		3454655
56	Pusev D.V. (Pusev_Denis)	19	132	184	2020-03-21 10:55:32		3478382
57	Fokin A. (Vizitor )	44	50	263	2019-08-18 21:46:14		3788771
58	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3816053
59	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3824115
60	Kordyum A. (alko58)	233	0	12	2019-07-12 15:58:52		3842399
61	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3886477
62	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		4026452
63	Kurochkin P.A. (qwrqwr)	12	209	227	2018-12-28 14:37:25		4124720
64	Grishunin M.F. (MikhailFG)	90	10	144	2018-12-26 09:36:27		4127901
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4270092
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4330639
67	Voevutskij S.A. (SergLK)	222	0	45	2018-07-01 13:19:14		4383998
68	Zyrin V.E. (Vezyr)	555	0	29	2018-05-29 14:14:19		4431463
69	Chebykin D. (GriGrim)	39	60	228	2018-03-26 15:47:45		4523530
70	Shkarednyj I.N. (Gosha)	37	64	151	2018-03-23 22:38:32		4527439
71	Boiko D. (Angellore)	9	231	229	2018-03-23 21:19:51		4527518
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4550147
73	Shkarednyj I.N. (Gosha)	37	64	147	2018-02-26 08:13:30		4564304
74	F (uff)	66	23	95	2018-01-22 15:57:03		4614240
75	Aliev R. (y4nzi)	27	93	259	2017-12-17 18:48:39		4665909
76	Kordyum A. (alko58)	233	0	101	2017-11-21 18:18:43		4703379
77	Zajtsev V.S. (Sleeping)	22	116	190	2017-11-20 12:57:31		4705140
78	Aliev R. (y4nzi)	27	93	257	2017-11-19 19:09:17		4706208
79	Aliev R. (y4nzi)	27	93	255	2017-10-24 14:34:21		4743923
80	Kukushkin S.A. (smog)	16	151	171	2017-10-05 18:37:27		4771040
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4804103
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	115	2017-07-21 14:09:37		4880748
83	Bezhaev A.Yu. (Baser)	8	234	220	2017-06-19 06:24:54		4927293
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4931442
85	F (uff)	66	23	185	2017-06-01 10:27:49		4952970
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4992843
87	Movlyanov A.P. (Oct)	14	191	218	2017-03-22 18:23:50		5054734
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5289637
89	Sysoev A.V. (Sysa)	53	37	165	2016-09-16 00:07:24		5325110
90	Sysoev A.V. (Sysa)	53	37	168	2016-07-22 23:44:07		5404333
91	Karasyova N.V. (vlksm)	10	223	263	2016-04-23 11:28:43		5534669
92	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		5576768
93	Sivoglazov M.A. (Gaizenberg)	70	22	127	2015-11-28 14:08:52		5746189
94	Maslyaev V.S. (Velmont)	94	9	170	2015-11-06 14:01:20		5777876
95	Sivoglazov M.A. (Gaizenberg)	70	22	261	2015-10-13 23:22:26		5811875
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5821236
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	107	188	2015-09-19 12:34:48		5847083
98	Movlyanov A.P. (Oct)	14	191	194	2015-09-09 14:10:52		5861387
99	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5863073
100	Varenikov D.M. (Dmitriy Varenikov)	20	128	263	2015-08-31 08:35:37		5874682

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