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SQL exercises

December 04, 10:02 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: 14383

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	56	31	150	2023-11-22 17:11:28		16851
2	Koptel'tsev V. (selber)	25	95	203	2023-11-22 09:13:25	2023-11-22 10:36:45	83
3	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		23938
4	Rudikov E. (cubie)	130	0	138	2023-10-31 17:27:54		48515
5	Komarov A.N. (Shveda Saulya)	56	31	149	2023-05-14 13:36:07		293547
6	Zajtsev V.S. (Sleeping)	20	109	150	2023-04-18 11:40:16		331103
7	Shkarednyj I.N. (Gosha)	33	66	198	2023-03-25 21:10:27		365092
8	Latyntsev N.G. (aks_nsk)	51	37	255	2023-01-12 16:01:39		469081
9	Koptel'tsev V. (selber)	25	95	237	2022-11-06 21:16:51		565246
10	Borisenkov D.V. (xuser)	94	9	173	2022-10-10 15:48:20		604454
11	Lukov D.R. (Gendalf)	228	0	90	2022-07-21 11:18:50		721364
12	Pavlov A.V. (Anton)	58	29	141	2022-04-10 16:17:39		867945
13	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		981995
14	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1119702
15	Fedevych V.I. (labuch_fedev)	34	65	221	2021-07-20 17:09:05		1248054
16	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1382408
17	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1424594
18	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1428342
19	Kozharinov A. (bubala)	193	0	10	2020-09-30 09:55:07		1670408
20	Samarin A. (not.yet.sql.master)	132	0	112	2020-08-14 15:12:10		1737771
21	Koptel'tsev V. (selber)	25	95	259	2020-06-24 00:22:07		1812101
22	Samarin A. (not.yet.sql.master)	132	0	138	2020-05-09 21:48:04		1877055
23	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		1885025
24	Fedevych V.I. (labuch_fedev)	34	65	226	2020-04-06 22:22:48		1924540
25	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		1948267
26	Williams B. (BW)	36	63	233	2019-11-20 18:28:22		2123494
27	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2258657
28	Bazavluk M. (DoNotLook)	92	9	141	2019-07-30 23:04:12		2285939
29	Romanov K.Yu. (kostik)	287	0	12	2019-07-25 08:42:10		2294001
30	Kordyum A. (alko58)	210	0	12	2019-07-12 15:58:52		2312284
31	Pavlov A.V. (Anton)	58	29	168	2019-06-12 01:20:21		2356362
32	Mal'tsev A.V. (Palkin)	108	8	218	2019-03-06 20:25:17		2496338
33	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		2594605
34	Grishunin M.F. (MikhailFG)	88	10	144	2018-12-26 09:36:27		2597786
35	Williams B. (BW)	36	63	222	2018-10-25 12:18:14		2686905
36	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		2739977
37	Skorohod I. (Dracul4ik)	75	15	45	2018-08-07 14:38:23		2800524
38	Voevutskij S.A. (SergLK)	196	0	45	2018-07-01 13:19:14		2853884
39	Zyrin V.E. (Vezyr)	506	0	29	2018-05-29 14:14:19		2901348
40	Zajtsev V.S. (Sleeping)	20	109	226	2018-04-05 11:18:07		2979285
41	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		2993415
42	Shkarednyj I.N. (Gosha)	33	66	151	2018-03-23 22:38:32		2997324
43	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		2997403
44	Azbel' E.G. (enull)	74	15	148	2018-03-08 04:10:21		3020032
45	Shkarednyj I.N. (Gosha)	33	66	147	2018-02-26 08:13:30		3034189
46	F (uff)	63	25	95	2018-01-22 15:57:03		3084126
47	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3135794
48	Kordyum A. (alko58)	210	0	101	2017-11-21 18:18:43		3173264
49	Zajtsev V.S. (Sleeping)	20	109	190	2017-11-20 12:57:31		3175025
50	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3176094
51	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3213808
52	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3240925
53	Skorohod I. (Dracul4ik)	75	15	156	2017-09-12 19:34:33		3273988
54	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3350633
55	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3397178
56	Vorob'ev E.V. (Johnnymnemonic)	147	0	138	2017-06-16 09:15:49		3401327
57	F (uff)	63	25	185	2017-06-01 10:27:49		3422855
58	Skorohod I. (Dracul4ik)	75	15	146	2017-05-04 17:54:53		3462728
59	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3524619
60	Skorohod I. (Dracul4ik)	75	15	144	2016-10-10 15:20:14		3759523
61	Sysoev A.V. (Sysa)	47	39	165	2016-09-16 00:07:24		3794995
62	Sysoev A.V. (Sysa)	47	39	168	2016-07-22 23:44:07		3874219
63	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4004554
64	Titovskij P.S. (kli3ma)	45	45	164	2016-03-25 05:49:30		4046653
65	Sivoglazov M.A. (Gaizenberg)	64	24	127	2015-11-28 14:08:52		4216074
66	Maslyaev V.S. (Velmont)	86	11	170	2015-11-06 14:01:20		4247761
67	Sivoglazov M.A. (Gaizenberg)	64	24	261	2015-10-13 23:22:26		4281760
68	Fomichev A.V. (Fomichev)	190	0	101	2015-10-07 11:21:04		4291122
69	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4316968
70	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4331272
71	Frolov (dr.shtopor)	78	14	141	2015-09-08 10:04:55		4332958
72	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4344567
73	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4348138
74	Halushka B. (halushka)	44	46	211	2015-08-26 13:33:28		4351469
75	Maslyaev V.S. (Velmont)	86	11	140	2015-07-27 05:27:50		4395155
76	Khromulyak O.M. (ChOleg)	117	5	150	2015-07-26 08:20:51		4396422
77	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4404984
78	Halushka B. (halushka)	44	46	143	2015-07-13 15:28:55		4414714
79	Halushka B. (halushka)	44	46	204	2015-07-07 15:42:03		4423341
80	Skorohod I. (Dracul4ik)	75	15	256	2015-01-28 15:03:11		4653780
81	Skorohod I. (Dracul4ik)	75	15	252	2015-01-27 11:56:41		4655406
82	Sysoev A.V. (Sysa)	47	39	143	2014-12-25 01:16:19		4703566
83	Grishin (alvigr)	76	15	185	2014-12-05 11:56:29		4731726
84	Fajnberg M.L. (burnall)	70	21	122	2014-10-31 12:46:14		4782077
85	Kabanets E.G. (azkaban)	90	9	209	2014-09-27 01:00:23		4831742
86	Sivoglazov M.A. (Gaizenberg)	64	24	178	2014-08-26 23:17:37		4876485
87	Perfilov B.V. (B o r i s)	97	9	29	2014-02-23 19:20:39		5141682
88	Utyonkov M.N. (=Maxim=)	46	42	255	2014-02-03 12:39:35		5170883
89	Shaymardanov M.M. (xLiSPirit)	38	62	147	2013-12-11 13:22:21		5248600
90	Martynyuk (Wiedzmen)	54	32	135	2013-11-26 20:27:27		5269775
91	Chebykin D. (GriGrim)	37	62	255	2013-11-07 15:23:46		5297439
92	Titovskij P.S. (kli3ma)	45	45	203	2013-10-31 10:01:45		5307841
93	Martynyuk (Wiedzmen)	54	32	185	2013-10-22 15:41:24		5320461
94	Kabanets E.G. (azkaban)	90	9	142	2013-08-22 17:11:21		5408211
95	Dvoryaninov V. (Valdaj)	40	55	37	2013-03-30 09:57:45		5617445
96	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	181	2013-03-26 10:24:33		5623178
97	Voevutskij S.A. (SergLK)	196	0	136	2013-02-18 20:46:29		5674396
98	Klimentov S.V. (Es-K'yu-El')	198	0	138	2013-01-28 22:22:27		5704540
99	Kozlov M.V. (mensch)	183	0	138	2012-11-25 12:12:47		5797310
100	Evseev D.V. (DerFroG)	126	2	140	2012-10-21 18:15:13		5847348

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