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SQL exercises

May 21, 04:49 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: 15092

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Vyazovetskov A.S. (alex_v)	11	223	230	2026-05-18 12:59:52	2026-05-20 15:56:52	3057
2	Makarov I.A. (_Bkmz_)	59	29	24	2026-05-16 11:11:27	2026-05-16 11:27:42	16
3	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		8124
4	Vyazovetskov A.S. (alex_v)	11	223	220	2026-05-13 11:51:48	2026-05-14 20:04:14	1932
5	Vyazovetskov A.S. (alex_v)	11	223	225	2026-05-12 11:55:53	2026-05-12 16:20:41	265
6	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		16765
7	Vyazovetskov A.S. (alex_v)	11	223	217	2026-05-08 10:20:20	2026-05-08 13:08:42	168
8	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		29824
9	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		40052
10	Vyazovetskov A.S. (alex_v)	11	223	264	2026-04-22 19:15:17		40894
11	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		71606
12	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		164833
13	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		240673
14	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		452377
15	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		574097
16	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		656251
17	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		686500
18	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		698688
19	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		846541
20	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		847849
21	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		870600
22	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		980138
23	Slavutinskij V.V. (Vasilko)	454	0	5	2024-04-22 17:26:35		1092203
24	Slavutinskij V.V. (Vasilko)	454	0	7	2024-04-22 17:26:21		1092203
25	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1121359
26	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1147880
27	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1161512
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1227554
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1230868
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1233257
31	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1265922
32	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1318185
33	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1342762
34	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1659339
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1763328
36	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1859493
37	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1898701
38	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2015611
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2162192
40	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2413948
41	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2542300
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2676654
43	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2718841
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2722588
45	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		2964654
46	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		3032017
47	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3106347
48	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3171301
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3179272
50	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3218787
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3242514
52	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3552903
53	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3580185
54	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3588247
55	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3606531
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3650609
57	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3790584
58	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3888852
59	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3892033
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4034224
61	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4094771
62	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4148130
63	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4195595
64	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4287662
65	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4291571
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4291650
67	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4314279
68	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4328436
69	F (uff)	65	25	95	2018-01-22 15:57:03		4378372
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4430041
71	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4467511
72	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4469272
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4470340
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4508055
75	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4535172
76	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4568235
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4644880
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4691425
79	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4695574
80	F (uff)	65	25	185	2017-06-01 10:27:49		4717102
81	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4756975
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4818866
83	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5053769
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5089242
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5168465
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5298801
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5340900
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5510321
89	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5542008
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5576007
91	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5585368
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5611215
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5625519
94	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5627205
95	Varenikov D.M. (Dmitriy Varenikov)	20	128	263	2015-08-31 08:35:37		5638814
96	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5642385
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5645716
98	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5689402
99	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5690669
100	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5699230

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