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SQL exercises

June 21, 19:15 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: 15113

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		7236
2	Makarov I.A. (_Bkmz_)	49	40	143	2026-06-12 10:09:54	2026-06-13 03:07:28	1018
3	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		41665
4	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		41691
5	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		53630
6	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		62271
7	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		75330
8	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		85558
9	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		86400
10	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		117112
11	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		210339
12	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		286179
13	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		497882
14	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		619602
15	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		701757
16	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		732005
17	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		744194
18	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		892046
19	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		893354
20	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		916105
21	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1025644
22	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1137708
23	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1137709
24	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1166865
25	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1193385
26	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1207017
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1273060
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1276373
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1278763
30	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1311428
31	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1363690
32	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1388267
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1704845
34	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1808833
35	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1904998
36	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1944207
37	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2061116
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2207697
39	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2459454
40	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2587806
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2722160
42	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2764346
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2768094
44	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3010160
45	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3077523
46	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3151853
47	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3216807
48	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3224778
49	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3264292
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3288020
51	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3598409
52	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3625691
53	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3633753
54	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3652036
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3696115
56	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3836090
57	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3934358
58	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3937539
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4079730
60	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4140277
61	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4193636
62	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4241101
63	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4333167
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4337077
65	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4337155
66	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4359785
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4373942
68	F (uff)	65	25	95	2018-01-22 15:57:03		4423878
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4475546
70	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4513016
71	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4514778
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4515846
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4553561
74	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4580678
75	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4613741
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4690385
77	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4736930
78	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4741079
79	F (uff)	65	25	185	2017-06-01 10:27:49		4762607
80	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4802480
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4864371
82	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5099275
83	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5134748
84	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5213971
85	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5344306
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5386406
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5555826
88	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5587514
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5621513
90	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5630874
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5656720
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5671024
93	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5672710
94	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5684319
95	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5687891
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5691222
97	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5734907
98	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5736174
99	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5744736
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5754466

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