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SQL exercises

April 14, 21:20 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: 15070

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	116	6	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
2	Sarkis'yan G. (gennadi_s)	15	160	198	2026-04-13 14:57:51		1822
3	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
4	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
5	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		6021
6	Sarkis'yan G. (gennadi_s)	15	160	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
7	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
8	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
9	Polyakov V.M. (rock_4)	116	6	146	2026-04-06 15:53:06		11847
10	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
11	Sarkis'yan G. (gennadi_s)	15	160	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
12	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
13	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
14	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
15	Sarkis'yan G. (gennadi_s)	15	160	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
16	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
17	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		19317
18	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		112544
20	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		188384
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		400087
22	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		521808
23	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		603962
24	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		634210
25	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		646399
26	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		794252
27	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		795560
28	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		818310
29	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		927849
30	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1039914
31	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1039914
32	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1069070
33	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1095591
34	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1109222
35	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1175265
36	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1178579
37	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1180968
38	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1213633
39	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1265896
40	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1290472
41	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1607050
42	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1711039
43	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1807203
44	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1846412
45	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1963321
46	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2109903
47	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2361659
48	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2490011
49	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2624365
50	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2666552
51	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2670299
52	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2912365
53	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2979728
54	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3054058
55	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3119012
56	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3126983
57	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3166497
58	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3190225
59	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3500614
60	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3527896
61	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3535958
62	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3554241
63	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3598320
64	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3738295
65	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3836563
66	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3839744
67	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3981935
68	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4042482
69	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4095841
70	Zyrin V.E. (Vezyr)	545	0	29	2018-05-29 14:14:19		4143306
71	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4235372
72	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4239282
73	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4239360
74	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4261990
75	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4276147
76	F (uff)	65	25	95	2018-01-22 15:57:03		4326083
77	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4377752
78	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4415221
79	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4416983
80	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4418051
81	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4455766
82	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4482883
83	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4515946
84	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4592591
85	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4639135
86	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4643284
87	F (uff)	65	25	185	2017-06-01 10:27:49		4664812
88	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4704685
89	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4766576
90	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5001480
91	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5036953
92	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5116176
93	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5246511
94	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5288611
95	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5458031
96	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5489719
97	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5523718
98	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5533079
99	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5558925
100	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5573229

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