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SQL exercises

February 26, 09:26 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: 15451

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	21	119	179	2026-02-21 19:34:16		6592
2	Polyakov V.M. (rock_4)	134	0	138	2026-02-20 17:03:21		8183
3	Polyakov V.M. (rock_4)	134	0	137	2026-02-13 11:01:59	2026-02-20 16:48:54	10427
4	Komarov A.N. (Shveda Saulya)	41	59	157	2024-09-04 13:29:47	2026-02-19 14:50:22	767601
5	Polyakov V.M. (rock_4)	134	0	135	2026-02-09 12:37:00	2026-02-13 10:46:31	5650
6	Komarov A.N. (Shveda Saulya)	41	59	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
7	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		22664
8	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		44150
9	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		119990
10	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		331694
11	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		453414
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		535569
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		565817
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		578005
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		725858
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		727166
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		749917
18	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		859455
19	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		971520
20	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		971520
21	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1000676
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1027197
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1040829
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1106871
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1110185
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1112575
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1145240
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1197502
29	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1222079
30	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1504666
31	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1538656
32	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1642645
33	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1738810
34	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1778018
35	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1894928
36	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2041509
37	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2293266
38	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2421618
39	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2555972
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2598158
41	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2601906
42	Kozharinov A. (bubala)	210	0	10	2020-09-30 09:55:07		2843972
43	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2911335
44	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2985665
45	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3050619
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3058589
47	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3098104
48	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3121831
49	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3432220
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3459502
51	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3467565
52	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3485848
53	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3529926
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3669901
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3768169
56	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3771350
57	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3913541
58	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3974088
59	Voevutskij S.A. (SergLK)	216	0	45	2018-07-01 13:19:14		4027447
60	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4074912
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4166979
62	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4170888
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4170967
64	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4193596
65	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4207753
66	F (uff)	65	25	95	2018-01-22 15:57:03		4257690
67	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4309358
68	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4346828
69	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4348589
70	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4349657
71	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4387372
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4414489
73	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4447552
74	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4524197
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4570742
76	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4574891
77	F (uff)	65	25	185	2017-06-01 10:27:49		4596419
78	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4636292
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4698183
80	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4933086
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4968559
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5047783
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5178118
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5220217
85	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5389638
86	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5421325
87	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5455324
88	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5464686
89	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5490532
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5504836
91	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5506522
92	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5518131
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5521702
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5525033
95	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5568719
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5569986
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5578548
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5588278
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5596905
100	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5827343

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