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SQL exercises

November 21, 06:26 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: 15279

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	19	128	186	2025-11-12 16:36:56	2025-11-14 15:14:47	2798
2	Sarkis'yan G. (gennadi_s)	19	128	185	2025-11-08 14:38:59	2025-11-10 12:02:03	2723
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		191833
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		313553
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		387609
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		395708
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		425956
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		438145
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		585997
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		587305
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		610056
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		637496
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		719595
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		831659
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		831660
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		860816
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		887336
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		900968
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		967010
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		970324
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		972714
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1005379
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1050555
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1057641
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1082218
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1327250
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1364806
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1398796
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1502784
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1598949
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1638158
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1755067
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1901648
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2153405
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2281757
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2416111
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2458297
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2462045
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2704111
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2771474
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2845804
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2910758
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2918729
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2958243
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2981970
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3292360
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3319642
48	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3327704
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3345987
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3390066
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3530041
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3628309
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3631490
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3773681
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3834228
56	Voevutskij S.A. (SergLK)	213	0	45	2018-07-01 13:19:14		3887587
57	Zyrin V.E. (Vezyr)	539	0	29	2018-05-29 14:14:19		3935052
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4027118
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4031027
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4031106
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4053736
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4067893
63	F (uff)	65	25	95	2018-01-22 15:57:03		4117829
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4169497
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4206967
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4208728
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4209797
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4247512
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4274629
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4307691
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4384336
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4430881
73	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4435030
74	F (uff)	65	25	185	2017-06-01 10:27:49		4456558
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4496431
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4558322
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4793226
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4828699
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4907922
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5038257
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5080357
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5249777
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5281465
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5315464
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5324825
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5350671
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5364975
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5366661
89	Varenikov D.M. (Dmitriy Varenikov)	18	128	263	2015-08-31 08:35:37		5378270
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5381842
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5385173
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5428858
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5430125
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5438687
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5448417
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5457044
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5687483
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5689109
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5737270
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5765430

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