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SQL exercises

October 20, 09:33 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: 15192

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	182	2025-10-13 15:25:57		9727
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		145940
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		267660
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		341716
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		349815
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		380063
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		392252
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		540104
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		541412
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		564163
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		591603
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		673702
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		785766
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		785767
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		814923
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		841443
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		855075
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		921118
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		924431
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		926821
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		959486
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1004662
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1011748
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1036325
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1281357
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1318913
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1352903
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1456891
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1553056
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1592265
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1709174
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1855755
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1969805
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2107512
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2235864
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2370218
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2412404
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2416152
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2658218
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2725581
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2799911
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2864865
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2872836
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2912350
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2936078
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3246467
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3273749
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3281811
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3300094
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3344173
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3484148
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3582416
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3585597
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3727788
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3788335
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3841694
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3889159
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3981225
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3985135
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3985213
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4007843
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4022000
63	F (uff)	65	25	95	2018-01-22 15:57:03		4071936
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4123604
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4161074
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4162836
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4163904
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4201619
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4228736
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4261798
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4338443
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4384988
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4389137
74	F (uff)	65	25	185	2017-06-01 10:27:49		4410665
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4450538
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4512429
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4747333
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4782806
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4862029
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4992364
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5034464
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5203884
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5235572
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5269571
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5278932
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5304778
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5319082
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5320768
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5332377
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5335949
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5339280
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5382965
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5384232
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5392794
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5402524
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5411151
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5641590
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5643216
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5691377
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5719537

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