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SQL exercises

October 14, 07:47 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: 15190

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		981
2	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		137194
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		258914
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		332970
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		341069
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		371317
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		383506
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		531358
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		532666
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		555417
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		582857
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		664956
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		777020
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		777021
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		806177
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		832697
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		846329
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		912372
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		915685
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		918075
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		950740
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		995916
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1003002
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1027579
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1272611
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1310167
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1344157
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1448145
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1544310
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1583519
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1700428
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1847009
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1961059
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2098766
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2227118
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2361472
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2403658
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2407406
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2649472
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2716835
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2791165
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2856119
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2864090
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2903604
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2927332
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3237721
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3265003
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3273065
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3291348
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3335427
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3475402
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3573670
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3576851
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3719042
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3779589
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3832948
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3880413
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3972479
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3976389
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3976467
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3999097
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4013254
64	F (uff)	65	25	95	2018-01-22 15:57:03		4063190
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4114858
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4152328
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4154090
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4155158
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4192873
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4219990
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4253052
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4329697
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4376242
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4380391
75	F (uff)	65	25	185	2017-06-01 10:27:49		4401919
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4441792
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4503683
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4738587
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4774060
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4853283
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4983618
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5025718
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5195138
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5226826
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5260825
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5270186
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5296032
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5310336
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5312022
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5323631
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5327203
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5330534
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5374219
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5375486
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5384048
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5393778
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5402405
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5632844
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5634470
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5682631

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