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SQL exercises

December 17, 19:25 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: 15354

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Kostomarov A.V. (al29)	5	247	88	2025-12-16 13:08:02	2025-12-16 14:28:09	80
2	Sarkis'yan G. (gennadi_s)	17	134	188	2025-11-30 13:49:15	2025-12-15 18:47:38	21898
3	Petrov Y. (YuriPetrov)	37	64	88	2025-12-10 15:24:13	2025-12-10 15:35:04	11
4	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14	2025-12-09 14:51:32	1572
5	Petrov Y. (YuriPetrov)	37	64	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
6	Petrov Y. (YuriPetrov)	37	64	5	2025-12-08 14:40:28	2025-12-08 15:14:01	34
7	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47	2025-12-08 10:54:29	4130
8	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		18349
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		230052
10	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		351773
11	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		425829
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		433927
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		464176
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		476364
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		624217
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		625525
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		648275
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		675716
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		757814
20	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		869879
21	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		869879
22	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		899035
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		925556
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		939188
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1005230
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1008544
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1010933
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1043598
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1088774
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1095861
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1120438
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1365469
33	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1403025
34	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1437015
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1541004
36	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1637169
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1676377
38	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1793287
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1939868
40	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2191624
41	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2319976
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2454330
43	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2496517
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2500264
45	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2742330
46	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2809693
47	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2884023
48	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2948977
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2956948
50	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2996463
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3020190
52	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3330579
53	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3357861
54	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3365923
55	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3384207
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3428285
57	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3568260
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3666528
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3669709
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3811900
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3872447
62	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3925806
63	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3973271
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4065338
65	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4069247
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4069326
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4091955
68	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4106112
69	F (uff)	65	25	95	2018-01-22 15:57:03		4156048
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4207717
71	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4245187
72	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4246948
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4248016
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4285731
75	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4312848
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4345911
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4422556
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4469101
79	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4473250
80	F (uff)	65	25	185	2017-06-01 10:27:49		4494778
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4534651
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4596542
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4831445
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4866918
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4946141
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5076477
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5118576
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5287997
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5319684
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5353683
91	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5363044
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5388891
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5403195
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5404881
95	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5416490
96	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5420061
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5423392
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5467078
99	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5468345
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5476906

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