Recent leaders activity at "SQL Exercises"

SQL exercises

June 02, 19:49 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: 15105

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		88
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		14247
8	Chernov D.V. (Kursist)	2	262	303	2026-05-23 20:49:50		14340
9	Koptel'tsev V. (selber)	19	129	303	2026-05-23 20:23:43		14366
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		26304
16	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		34945
17	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		48004
18	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		58232
19	Vyazovetskov A.S. (alex_v)	8	235	264	2026-04-22 19:15:17		59074
20	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		89786
21	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		183013
22	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		258853
23	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		470556
24	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		592277
25	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		674431
26	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		704679
27	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		716868
28	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		864721
29	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		866029
30	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		888779
31	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		998318
32	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1110383
33	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1110383
34	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1139539
35	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1166060
36	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1179692
37	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1245734
38	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1249048
39	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1251437
40	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1284102
41	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1336365
42	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1360942
43	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1677519
44	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1781508
45	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1877673
46	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1916881
47	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2033791
48	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2180372
49	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2432128
50	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2560480
51	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2694834
52	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2737021
53	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2740768
54	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		2982834
55	Samarin A. (not.yet.sql.master)	145	0	112	2020-08-14 15:12:10		3050197
56	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3124527
57	Samarin A. (not.yet.sql.master)	145	0	138	2020-05-09 21:48:04		3189481
58	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3197452
59	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3236967
60	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3260694
61	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3571083
62	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3598365
63	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3606427
64	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3624711
65	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3668789
66	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3808764
67	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3907032
68	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3910213
69	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4052404
70	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4112951
71	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4166310
72	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4213775
73	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4305842
74	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4309751
75	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4309830
76	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4332459
77	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4346616
78	F (uff)	65	25	95	2018-01-22 15:57:03		4396552
79	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4448221
80	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4485691
81	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4487452
82	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4488520
83	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4526235
84	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4553352
85	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4586415
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4663060
87	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4709605
88	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4713754
89	F (uff)	65	25	185	2017-06-01 10:27:49		4735282
90	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4775155
91	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4837046
92	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5071949
93	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5107422
94	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5186645
95	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5316981
96	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5359080
97	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5528501
98	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5560188
99	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5594187
100	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5603548

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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