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SQL exercises

April 22, 08:27 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	Vyazovetskov A.S. (alex_v)	12	200	32	2026-04-21 17:47:32	2026-04-21 19:26:54	99
2	Vyazovetskov A.S. (alex_v)	12	200	24	2026-04-21 16:48:14	2026-04-21 17:12:28	24
3	Polyakov V.M. (rock_4)	88	11	166	2026-04-21 17:12:16		915
4	Vyazovetskov A.S. (alex_v)	12	200	12	2026-04-21 14:41:05	2026-04-21 16:33:50	113
5	Vyazovetskov A.S. (alex_v)	12	200	7	2026-04-21 14:25:50	2026-04-21 14:38:59	13
6	Vyazovetskov A.S. (alex_v)	12	200	5	2026-04-21 11:28:24	2026-04-21 12:37:50	69
7	Polyakov V.M. (rock_4)	88	11	162	2026-04-16 13:25:02	2026-04-21 12:35:51	7151
8	Sarkis'yan G. (gennadi_s)	15	162	198	2026-04-13 14:57:51	2026-04-19 13:46:18	8568
9	Sigankov V.I. (vasilyvanc)	33	74	24	2026-04-16 17:02:10	2026-04-16 17:20:47	19
10	Polyakov V.M. (rock_4)	88	11	152	2026-04-16 13:35:42		8332
11	Polyakov V.M. (rock_4)	88	11	146	2026-04-06 15:53:06	2026-04-15 17:22:34	13049
12	Polyakov V.M. (rock_4)	88	11	24	2026-04-14 15:22:40	2026-04-14 16:03:02	40
13	Kostomarov A.V. (al29)	5	247	24	2026-04-13 13:11:46	2026-04-13 14:15:15	63
14	Kuritsyn V.N. (ValNick)	139	0	24	2026-04-11 22:13:57	2026-04-11 22:41:38	28
15	Komarov A.N. (Shveda Saulya)	38	62	159	2026-04-10 16:59:02		16768
16	Sarkis'yan G. (gennadi_s)	15	162	197	2026-04-10 12:16:57	2026-04-10 15:25:18	188
17	Polyakov V.M. (rock_4)	88	11	148	2026-04-01 11:23:28		30064
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		123291
19	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		199131
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		410834
21	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		532555
22	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		614709
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		644957
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		657146
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		804999
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		806307
27	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		829057
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		938596
29	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1050661
30	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1050661
31	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1079817
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1106338
33	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1119969
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1186012
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1189326
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1191715
37	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1224380
38	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1276643
39	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1301219
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1617797
41	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1721786
42	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1817950
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1857159
44	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1974068
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2120650
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2372406
47	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2500758
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2635112
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2677299
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2681046
51	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2923112
52	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2990475
53	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3064805
54	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3129759
55	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3137730
56	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3177245
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3200972
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3511361
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3538643
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3546705
61	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3564988
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3609067
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3749042
64	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3847310
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3850491
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3992682
67	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4053229
68	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4106588
69	Zyrin V.E. (Vezyr)	547	0	29	2018-05-29 14:14:19		4154053
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4246120
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4250029
72	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4250107
73	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4272737
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4286894
75	F (uff)	65	25	95	2018-01-22 15:57:03		4336830
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4388499
77	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4425969
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4427730
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4428798
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4466513
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4493630
82	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4526693
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4603338
84	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4649882
85	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4654031
86	F (uff)	65	25	185	2017-06-01 10:27:49		4675559
87	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4715432
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4777323
89	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		5012227
90	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5047700
91	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5126923
92	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5257259
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5299358
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5468778
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5500466
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5534465
97	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5543826
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5569673
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5583976
100	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5585662

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