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SQL exercises

September 11, 19:31 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: 14748

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	72	18	144	2024-09-09 11:12:22		3379
2	Sarkis'yan G. (gennadi_s)	72	18	148	2024-09-07 11:13:55	2024-09-08 15:36:50	1703
3	Komarov A.N. (Shveda Saulya)	44	49	157	2024-09-04 13:29:47		10442
4	Mityurin V. (mitvol)	131	0	137	2024-09-02 15:22:37	2024-09-03 10:21:47	1139
5	Koptel'tsev V. (selber)	24	97	165	2024-09-01 11:14:57	2024-09-03 06:46:30	2612
6	Komarov A.N. (Shveda Saulya)	44	49	156	2024-08-30 18:57:21	2024-09-02 00:50:25	3233
7	Sarkis'yan G. (gennadi_s)	72	18	166	2024-08-31 16:42:49	2024-09-01 13:19:56	1237
8	Komarov A.N. (Shveda Saulya)	44	49	155	2024-08-06 19:10:45	2024-08-30 14:57:20	34307
9	Sarkis'yan G. (gennadi_s)	72	18	143	2024-08-22 15:10:56	2024-08-30 11:56:06	11325
10	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		92540
11	Slavutinskij V.V. (Vasilko)	430	0	5	2024-04-22 17:26:35		204605
12	Slavutinskij V.V. (Vasilko)	430	0	7	2024-04-22 17:26:21		204605
13	Williams B. (BW)	33	66	141	2024-04-02 11:30:28		233761
14	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		260282
15	Latyntsev N.G. (aks_nsk)	52	37	253	2024-03-05 14:17:51		273914
16	Kurbanoff N.I. (Nariman Kurbanoff)	97	9	305	2024-01-19 17:35:31		339956
17	Kurbanoff N.I. (Nariman Kurbanoff)	97	9	306	2024-01-17 10:21:39		343270
18	Kurbanoff N.I. (Nariman Kurbanoff)	97	9	71	2024-01-15 18:32:03		345659
19	Nikolaenko A.V. (Shadow77)	81	14	135	2023-12-24 02:07:10		378324
20	Komarov A.N. (Shveda Saulya)	44	49	150	2023-11-22 17:11:28		423500
21	Boiko D. (Angellore)	8	237	262	2023-11-17 19:04:36		430587
22	Rudikov E. (cubie)	133	0	138	2023-10-31 17:27:54		455164
23	Komarov A.N. (Shveda Saulya)	44	49	149	2023-05-14 13:36:07		700195
24	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		737751
25	Shkarednyj I.N. (Gosha)	34	66	198	2023-03-25 21:10:27		771741
26	Latyntsev N.G. (aks_nsk)	52	37	255	2023-01-12 16:01:39		875730
27	Koptel'tsev V. (selber)	24	97	237	2022-11-06 21:16:51		971895
28	Borisenkov D.V. (xuser)	95	9	173	2022-10-10 15:48:20		1011103
29	Lukov D.R. (Gendalf)	233	0	90	2022-07-21 11:18:50		1128013
30	Pavlov A.V. (Anton)	58	29	141	2022-04-10 16:17:39		1274594
31	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1388643
32	Sigankov V.I. (vasilyvanc)	31	74	161	2021-10-17 20:21:01		1526350
33	Fedevych V.I. (labuch_fedev)	35	65	221	2021-07-20 17:09:05		1654702
34	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		1789056
35	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		1831243
36	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		1834990
37	Kozharinov A. (bubala)	198	0	10	2020-09-30 09:55:07		2077056
38	Samarin A. (not.yet.sql.master)	136	0	112	2020-08-14 15:12:10		2144419
39	Koptel'tsev V. (selber)	24	97	259	2020-06-24 00:22:07		2218749
40	Samarin A. (not.yet.sql.master)	136	0	138	2020-05-09 21:48:04		2283703
41	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		2291674
42	Fedevych V.I. (labuch_fedev)	35	65	226	2020-04-06 22:22:48		2331189
43	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2354916
44	Fokin A. (Vizitor )	42	52	217	2019-08-18 21:46:14		2665305
45	Bazavluk M. (DoNotLook)	93	9	141	2019-07-30 23:04:12		2692587
46	Romanov K.Yu. (kostik)	292	0	12	2019-07-25 08:42:10		2700649
47	Kordyum A. (alko58)	215	0	12	2019-07-12 15:58:52		2718933
48	Pavlov A.V. (Anton)	58	29	168	2019-06-12 01:20:21		2763011
49	Mal'tsev A.V. (Palkin)	109	8	218	2019-03-06 20:25:17		2902986
50	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3001254
51	Grishunin M.F. (MikhailFG)	89	10	144	2018-12-26 09:36:27		3004435
52	Shindin A.V. (AlShin)	23	99	45	2018-09-18 15:45:28		3146626
53	Skorohod I. (Dracul4ik)	76	15	45	2018-08-07 14:38:23		3207173
54	Voevutskij S.A. (SergLK)	201	0	45	2018-07-01 13:19:14		3260532
55	Zyrin V.E. (Vezyr)	517	0	29	2018-05-29 14:14:19		3307997
56	Chebykin D. (GriGrim)	37	62	228	2018-03-26 15:47:45		3400064
57	Shkarednyj I.N. (Gosha)	34	66	151	2018-03-23 22:38:32		3403973
58	Boiko D. (Angellore)	8	237	229	2018-03-23 21:19:51		3404052
59	Azbel' E.G. (enull)	75	15	148	2018-03-08 04:10:21		3426681
60	Shkarednyj I.N. (Gosha)	34	66	147	2018-02-26 08:13:30		3440838
61	F (uff)	63	25	95	2018-01-22 15:57:03		3490774
62	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3542443
63	Kordyum A. (alko58)	215	0	101	2017-11-21 18:18:43		3579913
64	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3581674
65	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3582742
66	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3620457
67	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3647574
68	Skorohod I. (Dracul4ik)	76	15	156	2017-09-12 19:34:33		3680637
69	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	115	2017-07-21 14:09:37		3757282
70	Bezhaev A.Yu. (Baser)	7	240	220	2017-06-19 06:24:54		3803827
71	Vorob'ev E.V. (Johnnymnemonic)	150	0	138	2017-06-16 09:15:49		3807976
72	F (uff)	63	25	185	2017-06-01 10:27:49		3829504
73	Skorohod I. (Dracul4ik)	76	15	146	2017-05-04 17:54:53		3869377
74	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		3931268
75	Skorohod I. (Dracul4ik)	76	15	144	2016-10-10 15:20:14		4166171
76	Sysoev A.V. (Sysa)	48	39	165	2016-09-16 00:07:24		4201644
77	Sysoev A.V. (Sysa)	48	39	168	2016-07-22 23:44:07		4280867
78	Karasyova N.V. (vlksm)	10	225	217	2016-04-23 11:28:43		4411203
79	Titovskij P.S. (kli3ma)	46	45	164	2016-03-25 05:49:30		4453302
80	Sivoglazov M.A. (Gaizenberg)	64	24	127	2015-11-28 14:08:52		4622723
81	Maslyaev V.S. (Velmont)	87	11	170	2015-11-06 14:01:20		4654410
82	Sivoglazov M.A. (Gaizenberg)	64	24	261	2015-10-13 23:22:26		4688409
83	Fomichev A.V. (Fomichev)	188	0	101	2015-10-07 11:21:04		4697770
84	Grinkevich D.L. (Dmitrij Grinkevich)	21	109	188	2015-09-19 12:34:48		4723617
85	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		4737921
86	Frolov (dr.shtopor)	79	14	141	2015-09-08 10:04:55		4739607
87	Varenikov D.M. (Dmitriy Varenikov)	18	125	217	2015-08-31 08:35:37		4751216
88	Chebykin D. (GriGrim)	37	62	217	2015-08-28 21:04:30		4754787
89	Halushka B. (halushka)	45	46	211	2015-08-26 13:33:28		4758118
90	Maslyaev V.S. (Velmont)	87	11	140	2015-07-27 05:27:50		4801804
91	Khromulyak O.M. (ChOleg)	118	5	150	2015-07-26 08:20:51		4803071
92	Chebykin D. (GriGrim)	37	62	216	2015-07-20 09:39:02		4811632
93	Halushka B. (halushka)	45	46	143	2015-07-13 15:28:55		4821363
94	Halushka B. (halushka)	45	46	204	2015-07-07 15:42:03		4829989
95	Skorohod I. (Dracul4ik)	76	15	256	2015-01-28 15:03:11		5060428
96	Skorohod I. (Dracul4ik)	76	15	252	2015-01-27 11:56:41		5062055
97	Sysoev A.V. (Sysa)	48	39	143	2014-12-25 01:16:19		5110215
98	Grishin (alvigr)	77	15	185	2014-12-05 11:56:29		5138375
99	Fajnberg M.L. (burnall)	70	21	122	2014-10-31 12:46:14		5188725
100	Kabanets E.G. (azkaban)	91	9	209	2014-09-27 01:00:23		5238391

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