Recent leaders activity at "SQL Exercises"

SQL exercises

June 02, 22:29 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.
NOTE: Your browser should support Cookies and Javascript to provide correct usage of this site. If you use content filter, it should allow opening child windows to explore help pages.

  • Top 100
  • Top 100 on latest exercises
  • "Liberal" rating
  • Olympic rating
  • TOP 100 of Learning Stage
  • Rating by summation of ranks
  • Top 10 (photos)
  • Last-week results
  • Rating of second-stage exercises (average)
  • Rating of 2nd-stage exercises (median)
  • Author's rating  • 2nd stage rating up to exercise:
   enter No 
  • Rating on the exercise:
   enter No
  • Optimistic rating
   enter factor

  • Today statistics
  • Site's old residents
  • Recent leaders activity
  • Сhanges in exercises' TOP 10
  • Results' chart

SQL exercises

  • Site rules
  • SELECT (learning stage)
  • SELECT (learning stage,
      choosing DBMS)
  • SELECT (rating stages)
  • DML 
  • Transact-SQL tests
  • Data simulation
  • Data simulation (DML);
  • Visual simulation (painting)
  • Exercises voting (SELECT)
  • Exercises voting (DML)

  • Learning stage
  • Rating stages
  • Favorites
  • Search
  • Blogs

Certification

  • About certification
  • Certified professionals
  • Statistics
  • Statistics over regions (map)
  • Confirm certificate

HELP

Query optimization

Developers & Thanks

For employers

Support SQL-EX.RU

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: 15109

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Vyazovetskov A.S. (alex_v)	8	235	234	2026-06-02 18:21:50		248
2	Vyazovetskov A.S. (alex_v)	8	235	231	2026-06-01 13:05:50	2026-06-02 11:49:03	1363
3	Makarov I.A. (_Bkmz_)	55	33	185	2026-05-30 11:04:38	2026-05-30 12:08:17	64
4	Vyazovetskov A.S. (alex_v)	8	235	157	2026-05-28 09:45:32	2026-05-29 14:38:42	1733
5	Vyazovetskov A.S. (alex_v)	8	235	216	2026-05-26 11:29:01	2026-05-27 11:29:15	1440
6	Vyazovetskov A.S. (alex_v)	8	235	155	2026-05-22 11:18:23	2026-05-25 14:49:10	4531
7	Varenikov D.M. (Dmitriy Varenikov)	20	128	303	2026-05-23 22:21:57		14408
8	Chernov D.V. (Kursist)	2	262	303	2026-05-23 20:49:50		14500
9	Koptel'tsev V. (selber)	19	129	303	2026-05-23 20:23:43		14526
10	Krasovskij E.A. (pegoopik)	1	262	303	2026-05-23 15:29:26	2026-05-23 19:54:13	265
11	Makarov I.A. (_Bkmz_)	55	33	195	2026-05-23 10:27:06	2026-05-23 15:11:29	284
12	Sarkis'yan G. (gennadi_s)	15	170	303	2026-05-23 13:24:38	2026-05-23 13:24:42	0
13	Filippkin D.V. (_dimon_)	3	259	24	2026-05-21 10:12:47	2026-05-21 10:19:45	7
14	Vyazovetskov A.S. (alex_v)	8	235	230	2026-05-18 12:59:52	2026-05-20 15:56:52	3057
15	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		26464
16	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		35105
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		48164
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		58392
19	Vyazovetskov A.S. (alex_v)	8	235	264	2026-04-22 19:15:17		59234
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		89946
21	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		183173
22	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		259013
23	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		470717
24	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		592437
25	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		674592
26	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		704840
27	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		717028
28	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		864881
29	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		866189
30	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		888940
31	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		998478
32	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1110543
33	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1110543
34	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1139699
35	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1166220
36	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1179852
37	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1245894
38	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1249208
39	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1251598
40	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1284262
41	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1336525
42	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1361102
43	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1677679
44	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1781668
45	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1877833
46	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1917041
47	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2033951
48	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2180532
49	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2432289
50	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2560641
51	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2694994
52	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2737181
53	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2740928
54	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		2982994
55	Samarin A. (not.yet.sql.master)	145	0	112	2020-08-14 15:12:10		3050357
56	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3124687
57	Samarin A. (not.yet.sql.master)	145	0	138	2020-05-09 21:48:04		3189642
58	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3197612
59	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3237127
60	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3260854
61	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3571243
62	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3598525
63	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3606587
64	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3624871
65	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3668949
66	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3808924
67	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3907192
68	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3910373
69	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4052564
70	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4113111
71	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4166470
72	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4213935
73	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4306002
74	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4309911
75	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4309990
76	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4332619
77	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4346776
78	F (uff)	65	25	95	2018-01-22 15:57:03		4396713
79	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4448381
80	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4485851
81	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4487612
82	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4488680
83	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4526395
84	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4553512
85	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4586575
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4663220
87	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4709765
88	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4713914
89	F (uff)	65	25	185	2017-06-01 10:27:49		4735442
90	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4775315
91	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4837206
92	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5072109
93	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5107582
94	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5186805
95	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5317141
96	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5359240
97	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5528661
98	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5560348
99	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5594347
100	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5603709

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

Copyright SQL-EX © 2002-2026. All rights reserved.
contact