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SQL exercises

October 11, 21:29 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: 15173

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		133697
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		255417
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		329473
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		337572
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		367820
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		380008
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		527861
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		529169
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		551920
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		579360
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		661458
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		773523
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		773523
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		802679
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		829200
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		842832
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		908874
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		912188
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		914578
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		947243
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		992418
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		999505
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1024082
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1269114
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1306669
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1340659
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1444648
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1540813
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1580021
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1696931
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1843512
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1957562
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2095269
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2223621
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2357975
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2400161
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2403909
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2645975
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2713338
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2787668
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2852622
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2860592
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2900107
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2923834
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3234223
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3261505
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3269568
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3287851
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3331929
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3471904
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3570172
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3573353
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3715544
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3776091
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3829450
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3876915
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3968982
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3972891
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3972970
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3995599
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4009756
63	F (uff)	65	25	95	2018-01-22 15:57:03		4059693
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4111361
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4148831
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4150592
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4151660
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4189375
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4216492
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4249555
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4326200
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4372745
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4376894
74	F (uff)	65	25	185	2017-06-01 10:27:49		4398422
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4438295
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4500186
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4735089
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4770562
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4849786
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4980121
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5022220
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5191641
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5223328
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5257327
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5266689
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5292535
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5306839
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5308525
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5320134
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5323705
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5327036
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5370722
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5371989
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5380551
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5390281
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5398908
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5629346
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5630973
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5679133
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5707293

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