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SQL exercises

December 09, 10:28 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: 15357

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	37	64	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
2	Petrov Y. (YuriPetrov)	37	64	5	2025-12-08 14:40:28	2025-12-08 15:14:01	34
3	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14		1309
4	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47	2025-12-08 10:54:29	4130
5	Lukov D.R. (Gendalf)	241	0	32	2025-12-05 01:36:21		6292
6	Sarkis'yan G. (gennadi_s)	18	131	188	2025-11-30 13:49:15		12759
7	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		217996
8	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		339716
9	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		413772
10	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		421870
11	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		452119
12	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		464307
13	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		612160
14	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		613468
15	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		636219
16	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		663659
17	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		745757
18	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		857822
19	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		857822
20	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		886978
21	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		913499
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		927131
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		993173
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		996487
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		998876
26	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1031541
27	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1076717
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1083804
29	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1108381
30	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1353412
31	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1390968
32	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1424958
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1528947
34	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1625112
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1664320
36	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1781230
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1927811
38	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2179567
39	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2307919
40	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2442273
41	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2484460
42	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2488207
43	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2730273
44	Samarin A. (not.yet.sql.master)	143	0	112	2020-08-14 15:12:10		2797636
45	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2871966
46	Samarin A. (not.yet.sql.master)	143	0	138	2020-05-09 21:48:04		2936920
47	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2944891
48	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2984406
49	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		3008133
50	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3318522
51	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3345804
52	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3353866
53	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3372150
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3416228
55	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3556203
56	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3654471
57	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3657652
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3799843
59	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3860390
60	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3913749
61	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3961214
62	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4053281
63	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4057190
64	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4057269
65	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4079898
66	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4094055
67	F (uff)	65	25	95	2018-01-22 15:57:03		4143991
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4195660
69	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4233130
70	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4234891
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4235959
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4273674
73	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4300791
74	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4333854
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4410499
76	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4457044
77	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4461193
78	F (uff)	65	25	185	2017-06-01 10:27:49		4482721
79	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4522594
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4584485
81	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4819388
82	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4854861
83	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4934084
84	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5064420
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5106519
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5275940
87	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5307627
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5341626
89	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5350987
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5376834
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5391138
92	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5392824
93	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5404433
94	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5408004
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5411335
96	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5455021
97	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5456288
98	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5464849
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5474580
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5483206

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