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SQL exercises

May 06, 08:30 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: 14594

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	47	40	154	2024-05-03 17:30:12		3780
2	Komarov A.N. (Shveda Saulya)	47	40	153	2024-04-29 20:51:23	2024-05-02 20:16:54	4286
3	Komarov A.N. (Shveda Saulya)	47	40	152	2024-04-27 19:00:22	2024-04-28 02:27:44	447
4	Slavutinskij V.V. (Vasilko)	425	0	5	2024-04-22 17:26:35		19624
5	Slavutinskij V.V. (Vasilko)	425	0	7	2024-04-22 17:26:21		19624
6	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		48780
7	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		75301
8	Latyntsev N.G. (aks_nsk)	52	37	253	2024-03-05 14:17:51		88932
9	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	305	2024-01-19 17:35:31		154975
10	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	306	2024-01-17 10:21:39		158289
11	Kurbanoff N.I. (Nariman Kurbanoff)	96	9	71	2024-01-15 18:32:03		160678
12	Nikolaenko A.V. (Shadow77)	80	14	135	2023-12-24 02:07:10		193343
13	Komarov A.N. (Shveda Saulya)	47	40	150	2023-11-22 17:11:28		238519
14	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		245606
15	Rudikov E. (cubie)	130	0	138	2023-10-31 17:27:54		270182
16	Komarov A.N. (Shveda Saulya)	47	40	149	2023-05-14 13:36:07		515214
17	Zajtsev V.S. (Sleeping)	20	109	150	2023-04-18 11:40:16		552770
18	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		586760
19	Latyntsev N.G. (aks_nsk)	52	37	255	2023-01-12 16:01:39		690749
20	Koptel'tsev V. (selber)	25	95	237	2022-11-06 21:16:51		786913
21	Borisenkov D.V. (xuser)	94	9	173	2022-10-10 15:48:20		826122
22	Lukov D.R. (Gendalf)	231	0	90	2022-07-21 11:18:50		943031
23	Pavlov A.V. (Anton)	58	29	141	2022-04-10 16:17:39		1089613
24	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1203662
25	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1341369
26	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1469721
27	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1604075
28	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1646262
29	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1650009
30	Kozharinov A. (bubala)	196	0	10	2020-09-30 09:55:07		1892075
31	Samarin A. (not.yet.sql.master)	133	0	112	2020-08-14 15:12:10		1959438
32	Koptel'tsev V. (selber)	25	95	259	2020-06-24 00:22:07		2033768
33	Samarin A. (not.yet.sql.master)	133	0	138	2020-05-09 21:48:04		2098722
34	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2106693
35	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2146207
36	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2169935
37	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2480324
38	Bazavluk M. (DoNotLook)	92	9	141	2019-07-30 23:04:12		2507606
39	Romanov K.Yu. (kostik)	289	0	12	2019-07-25 08:42:10		2515668
40	Kordyum A. (alko58)	213	0	12	2019-07-12 15:58:52		2533951
41	Pavlov A.V. (Anton)	58	29	168	2019-06-12 01:20:21		2578030
42	Mal'tsev A.V. (Palkin)	108	8	218	2019-03-06 20:25:17		2718005
43	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		2816273
44	Grishunin M.F. (MikhailFG)	88	10	144	2018-12-26 09:36:27		2819454
45	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		2961645
46	Skorohod I. (Dracul4ik)	75	15	45	2018-08-07 14:38:23		3022192
47	Voevutskij S.A. (SergLK)	199	0	45	2018-07-01 13:19:14		3075551
48	Zyrin V.E. (Vezyr)	512	0	29	2018-05-29 14:14:19		3123016
49	Zajtsev V.S. (Sleeping)	20	109	226	2018-04-05 11:18:07		3200952
50	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		3215082
51	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3218992
52	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3219070
53	Azbel' E.G. (enull)	74	15	148	2018-03-08 04:10:21		3241700
54	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3255857
55	F (uff)	63	25	95	2018-01-22 15:57:03		3305793
56	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3357462
57	Kordyum A. (alko58)	213	0	101	2017-11-21 18:18:43		3394932
58	Zajtsev V.S. (Sleeping)	20	109	190	2017-11-20 12:57:31		3396693
59	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3397761
60	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3435476
61	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3462593
62	Skorohod I. (Dracul4ik)	75	15	156	2017-09-12 19:34:33		3495656
63	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3572301
64	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3618845
65	Vorob'ev E.V. (Johnnymnemonic)	147	0	138	2017-06-16 09:15:49		3622994
66	F (uff)	63	25	185	2017-06-01 10:27:49		3644522
67	Skorohod I. (Dracul4ik)	75	15	146	2017-05-04 17:54:53		3684395
68	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3746286
69	Skorohod I. (Dracul4ik)	75	15	144	2016-10-10 15:20:14		3981190
70	Sysoev A.V. (Sysa)	48	39	165	2016-09-16 00:07:24		4016663
71	Sysoev A.V. (Sysa)	48	39	168	2016-07-22 23:44:07		4095886
72	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4226222
73	Titovskij P.S. (kli3ma)	45	45	164	2016-03-25 05:49:30		4268321
74	Sivoglazov M.A. (Gaizenberg)	64	24	127	2015-11-28 14:08:52		4437741
75	Maslyaev V.S. (Velmont)	86	11	170	2015-11-06 14:01:20		4469429
76	Sivoglazov M.A. (Gaizenberg)	64	24	261	2015-10-13 23:22:26		4503428
77	Fomichev A.V. (Fomichev)	187	0	101	2015-10-07 11:21:04		4512789
78	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4538635
79	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4552939
80	Frolov (dr.shtopor)	78	14	141	2015-09-08 10:04:55		4554625
81	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4566235
82	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4569806
83	Halushka B. (halushka)	44	46	211	2015-08-26 13:33:28		4573137
84	Maslyaev V.S. (Velmont)	86	11	140	2015-07-27 05:27:50		4616822
85	Khromulyak O.M. (ChOleg)	117	5	150	2015-07-26 08:20:51		4618089
86	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4626651
87	Halushka B. (halushka)	44	46	143	2015-07-13 15:28:55		4636381
88	Halushka B. (halushka)	44	46	204	2015-07-07 15:42:03		4645008
89	Skorohod I. (Dracul4ik)	75	15	256	2015-01-28 15:03:11		4875447
90	Skorohod I. (Dracul4ik)	75	15	252	2015-01-27 11:56:41		4877074
91	Sysoev A.V. (Sysa)	48	39	143	2014-12-25 01:16:19		4925234
92	Grishin (alvigr)	76	15	185	2014-12-05 11:56:29		4953394
93	Fajnberg M.L. (burnall)	70	21	122	2014-10-31 12:46:14		5003744
94	Kabanets E.G. (azkaban)	90	9	209	2014-09-27 01:00:23		5053410
95	Sivoglazov M.A. (Gaizenberg)	64	24	178	2014-08-26 23:17:37		5098153
96	Perfilov B.V. (B o r i s)	97	9	29	2014-02-23 19:20:39		5363350
97	Utyonkov M.N. (=Maxim=)	46	42	255	2014-02-03 12:39:35		5392551
98	Shaymardanov M.M. (xLiSPirit)	38	62	147	2013-12-11 13:22:21		5470268
99	Martynyuk (Wiedzmen)	55	32	135	2013-11-26 20:27:27		5491443
100	Chebykin D. (GriGrim)	37	62	255	2013-11-07 15:23:46		5519106

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