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SQL exercises

October 15, 00:51 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: 15194

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		2006
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		138219
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		259939
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		333995
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		342094
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		372342
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		384530
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		532383
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		533691
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		556442
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		583882
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		665980
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		778045
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		778045
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		807201
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		833722
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		847354
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		913396
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		916710
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		919100
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		951765
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		996940
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1004027
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1028604
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1273636
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1311192
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1345181
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1449170
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1545335
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1584543
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1701453
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1848034
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1962084
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2099791
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2228143
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2362497
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2404683
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2408431
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2650497
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2717860
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2792190
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2857144
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2865114
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2904629
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2928356
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3238746
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3266028
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3274090
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3292373
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3336451
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3476426
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3574694
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3577875
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3720066
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3780613
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3833973
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3881437
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3973504
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3977413
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3977492
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4000121
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4014278
64	F (uff)	65	25	95	2018-01-22 15:57:03		4064215
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4115883
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4153353
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4155114
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4156182
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4193897
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4221014
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4254077
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4330722
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4377267
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4381416
75	F (uff)	65	25	185	2017-06-01 10:27:49		4402944
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4442817
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4504708
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4739612
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4775084
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4854308
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4984643
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5026742
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5196163
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5227850
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5261849
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5271211
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5297057
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5311361
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5313047
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5324656
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5328227
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5331558
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5375244
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5376511
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5385073
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5394803
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5403430
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5633869
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5635495
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5683655

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