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SQL exercises

October 15, 11:13 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: 15197

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		2628
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		138841
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		260561
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		334617
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		342716
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		372964
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		385152
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		533005
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		534313
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		557064
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		584504
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		666602
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		778667
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		778667
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		807823
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		834344
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		847976
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		914018
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		917332
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		919722
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		952387
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		997562
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1004649
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1029226
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1274258
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1311813
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1345803
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1449792
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1545957
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1585165
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1702075
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1848656
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1962706
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2100413
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2228765
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2363119
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2405305
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2409053
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2651119
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2718482
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2792812
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2857766
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2865736
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2905251
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2928978
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3239368
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3266650
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3274712
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3292995
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3337073
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3477048
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3575316
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3578497
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3720688
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3781235
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3834595
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3882059
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3974126
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3978035
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3978114
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4000743
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4014900
64	F (uff)	65	25	95	2018-01-22 15:57:03		4064837
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4116505
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4153975
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4155736
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4156804
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4194519
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4221636
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4254699
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4331344
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4377889
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4382038
75	F (uff)	65	25	185	2017-06-01 10:27:49		4403566
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4443439
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4505330
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4740234
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4775706
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4854930
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4985265
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5027364
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5196785
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5228472
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5262471
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5271833
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5297679
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5311983
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5313669
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5325278
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5328849
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5332180
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5375866
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5377133
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5385695
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5395425
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5404052
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5634491
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5636117
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5684277

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