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SQL exercises

October 11, 09:18 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: 15170

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		132966
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		254686
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		328742
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		336841
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		367089
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		379277
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		527130
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		528438
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		551189
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		578629
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		660727
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		772792
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		772792
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		801948
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		828469
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		842101
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		908143
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		911457
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		913847
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		946511
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		991687
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		998774
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1023351
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1268382
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1305938
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1339928
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1443917
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1540082
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1579290
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1696200
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1842781
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1956831
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2094538
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2222890
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2357243
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2399430
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2403177
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2645243
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2712606
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2786936
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2851891
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2859861
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2899376
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2923103
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3233492
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3260774
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3268836
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3287120
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3331198
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3471173
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3569441
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3572622
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3714813
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3775360
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3828719
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3876184
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3968251
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3972160
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3972239
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3994868
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4009025
63	F (uff)	65	25	95	2018-01-22 15:57:03		4058962
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4110630
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4148100
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4149861
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4150929
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4188644
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4215761
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4248824
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4325469
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4372014
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4376163
74	F (uff)	65	25	185	2017-06-01 10:27:49		4397691
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4437564
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4499455
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4734358
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4769831
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4849054
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4979390
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5021489
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5190910
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5222597
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5256596
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5265958
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5291804
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5306108
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5307794
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5319403
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5322974
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5326305
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5369991
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5371258
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5379820
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5389550
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5398177
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5628615
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5630242
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5678402
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5706562

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