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SQL exercises

December 09, 10:52 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: 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		1333
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		6316
6	Sarkis'yan G. (gennadi_s)	18	131	188	2025-11-30 13:49:15		12783
7	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		218020
8	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		339740
9	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		413796
10	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		421894
11	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		452143
12	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		464331
13	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		612184
14	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		613492
15	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		636243
16	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		663683
17	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		745781
18	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		857846
19	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		857846
20	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		887002
21	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		913523
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		927155
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		993197
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		996511
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		998901
26	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1031565
27	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1076741
28	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1083828
29	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1108405
30	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1353436
31	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1390992
32	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1424982
33	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1528971
34	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1625136
35	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1664344
36	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1781254
37	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1927835
38	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2179592
39	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2307943
40	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2442297
41	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2484484
42	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2488231
43	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2730297
44	Samarin A. (not.yet.sql.master)	143	0	112	2020-08-14 15:12:10		2797660
45	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2871990
46	Samarin A. (not.yet.sql.master)	143	0	138	2020-05-09 21:48:04		2936944
47	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2944915
48	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2984430
49	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		3008157
50	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3318546
51	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3345828
52	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3353890
53	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3372174
54	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3416252
55	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3556227
56	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3654495
57	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3657676
58	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3799867
59	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3860414
60	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3913773
61	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3961238
62	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4053305
63	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4057214
64	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4057293
65	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4079922
66	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4094079
67	F (uff)	65	25	95	2018-01-22 15:57:03		4144016
68	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4195684
69	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4233154
70	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4234915
71	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4235983
72	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4273698
73	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4300815
74	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4333878
75	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4410523
76	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4457068
77	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4461217
78	F (uff)	65	25	185	2017-06-01 10:27:49		4482745
79	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4522618
80	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4584509
81	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4819412
82	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4854885
83	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4934108
84	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5064444
85	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5106543
86	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5275964
87	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5307651
88	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5341650
89	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5351011
90	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5376858
91	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5391162
92	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5392848
93	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5404457
94	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5408028
95	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5411359
96	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5455045
97	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5456312
98	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5464874
99	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5474604
100	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5483231

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