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SQL exercises

July 12, 09:05 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: 15124

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		371
2	Koptel'tsev V. (selber)	19	130	241	2026-05-23 20:23:43	2026-07-07 07:38:38	64035
3	Varenikov D.M. (Dmitriy Varenikov)	20	129	251	2026-06-28 23:28:11	2026-06-29 16:31:13	1023
4	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		36867
5	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		71296
6	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		91901
7	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		104960
8	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		115188
9	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		116030
10	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		146742
11	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		239969
12	Lukov D.R. (Gendalf)	246	0	32	2025-12-05 01:36:21		315809
13	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		527512
14	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		731387
15	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		761636
16	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		773824
17	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		921677
18	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		922985
19	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		945735
20	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1055274
21	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1167339
22	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1167339
23	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1196495
24	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1223016
25	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1236648
26	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1302690
27	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1306004
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1308393
29	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1341058
30	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1393321
31	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1417898
32	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1734475
33	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1838464
34	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1934629
35	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1973837
36	Lukov D.R. (Gendalf)	246	0	90	2022-07-21 11:18:50		2090747
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2237328
38	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2489084
39	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2617436
40	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2751790
41	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2793977
42	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2797724
43	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3039790
44	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3107153
45	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3181483
46	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3246437
47	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3254408
48	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3293923
49	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3317650
50	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3628039
51	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3655321
52	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3663383
53	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3681667
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3725745
55	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3865720
56	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3963988
57	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3967169
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4109360
59	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4169907
60	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4223266
61	Zyrin V.E. (Vezyr)	551	0	29	2018-05-29 14:14:19		4270731
62	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4362798
63	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4366707
64	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4366786
65	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4389415
66	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4403572
67	F (uff)	65	25	95	2018-01-22 15:57:03		4453508
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4505177
69	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4542647
70	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4544408
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4545476
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4583191
73	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4610308
74	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4643371
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4720016
76	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4766561
77	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4770710
78	F (uff)	65	25	185	2017-06-01 10:27:49		4792238
79	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4832111
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4894002
81	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5128905
82	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5164378
83	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5243601
84	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5373937
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5416036
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5585457
87	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5617144
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5651143
89	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5660504
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5686351
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5700655
92	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5702341
93	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5713950
94	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5717521
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5720852
96	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5764538
97	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5765805
98	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5774366
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5784097
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5792723

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