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SQL exercises

February 19, 00:56 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: 15421

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	41	56	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
2	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		12074
3	Sarkis'yan G. (gennadi_s)	16	149	193	2026-02-02 14:48:13	2026-02-06 14:23:09	5735
4	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		33561
5	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		109401
6	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		321104
7	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		442824
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		524979
9	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		555227
10	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		567416
11	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		715268
12	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		716576
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		739327
14	Komarov A.N. (Shveda Saulya)	41	56	157	2024-09-04 13:29:47		766767
15	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		848866
16	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		960930
17	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		960931
18	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		990087
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1016607
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1030239
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1096281
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1099595
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1101985
24	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1134650
25	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1186912
26	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1211489
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1494077
28	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1528067
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1632055
30	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1728220
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1767429
32	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1884338
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2030919
34	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2282676
35	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2411028
36	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2545382
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2587568
38	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2591316
39	Kozharinov A. (bubala)	209	0	10	2020-09-30 09:55:07		2833382
40	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2900745
41	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2975075
42	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3040029
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3048000
44	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3087514
45	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3111241
46	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3421631
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3448913
48	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3456975
49	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3475258
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3519337
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3659312
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3757580
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3760761
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3902952
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3963499
56	Voevutskij S.A. (SergLK)	215	0	45	2018-07-01 13:19:14		4016858
57	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4064323
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4156389
59	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4160298
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4160377
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4183007
62	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4197163
63	F (uff)	65	25	95	2018-01-22 15:57:03		4247100
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4298768
65	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4336238
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4337999
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4339068
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4376783
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4403900
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4436962
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4513607
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4560152
73	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4564301
74	F (uff)	65	25	185	2017-06-01 10:27:49		4585829
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4625702
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4687593
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4922497
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4957970
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5037193
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5167528
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5209627
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5379048
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5410736
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5444735
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5454096
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5479942
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5494246
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5495932
89	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5507541
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5511112
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5514444
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5558129
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5559396
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5567958
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5577688
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5586315
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5816754
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5818380
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5866541
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5894701

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