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SQL exercises

December 24, 04:52 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: 15339

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	33	71	238	2025-12-21 01:40:19	2025-12-21 02:29:32	49
2	Petrov Y. (YuriPetrov)	33	71	235	2025-12-20 17:12:38	2025-12-20 17:59:08	47
3	Petrov Y. (YuriPetrov)	33	71	239	2025-12-20 00:52:23	2025-12-20 01:31:37	39
4	Petrov Y. (YuriPetrov)	33	71	236	2025-12-19 00:26:50	2025-12-19 01:32:46	66
5	Kostomarov A.V. (al29)	5	247	88	2025-12-16 13:08:02	2025-12-16 14:28:09	80
6	Sarkis'yan G. (gennadi_s)	17	134	188	2025-11-30 13:49:15	2025-12-15 18:47:38	21898
7	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		27556
8	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		239259
9	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		360980
10	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		435036
11	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		443134
12	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		473382
13	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		485571
14	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		633424
15	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		634732
16	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		657482
17	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		684922
18	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		767021
19	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		879086
20	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		879086
21	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		908242
22	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		934763
23	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		948394
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1014437
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1017751
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1020140
27	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1052805
28	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1097981
29	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1105068
30	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1129644
31	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1374676
32	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1412232
33	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1446222
34	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1550211
35	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1646375
36	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1685584
37	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1802493
38	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1949075
39	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2200831
40	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2329183
41	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2463537
42	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2505724
43	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2509471
44	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2751537
45	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2818900
46	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2893230
47	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2958184
48	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2966155
49	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3005669
50	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3029397
51	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3339786
52	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3367068
53	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3375130
54	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3393413
55	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3437492
56	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3577467
57	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3675735
58	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3678916
59	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3821107
60	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3881654
61	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3935013
62	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3982478
63	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4074544
64	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4078454
65	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4078532
66	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4101162
67	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4115319
68	F (uff)	65	25	95	2018-01-22 15:57:03		4165255
69	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4216924
70	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4254393
71	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4256155
72	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4257223
73	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4294938
74	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4322055
75	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4355118
76	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4431763
77	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4478307
78	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4482456
79	F (uff)	65	25	185	2017-06-01 10:27:49		4503984
80	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4543857
81	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4605748
82	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4840652
83	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4876125
84	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4955348
85	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5085683
86	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5127783
87	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5297203
88	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5328891
89	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5362890
90	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5372251
91	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5398097
92	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5412401
93	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5414087
94	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5425697
95	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5429268
96	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5432599
97	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5476284
98	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5477551
99	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5486113
100	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5495843

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