Recent leaders activity at "SQL Exercises"

SQL exercises

October 02, 22:47 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: 15184

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	20	116	240	2025-09-08 22:07:14	2025-09-24 08:05:14	22198
2	Kreslavskij O.M. (Arcan)	6	244	264	2025-09-22 15:49:45	2025-09-22 15:51:24	2
3	Kreslavskij O.M. (Arcan)	6	244	308	2025-09-21 19:41:47	2025-09-21 23:16:59	215
4	Chernov D.V. (Kursist)	2	262	264	2025-09-21 20:16:45	2025-09-21 21:50:30	94
5	Chernov D.V. (Kursist)	2	262	308	2025-09-06 21:42:05	2025-09-21 21:43:05	21601
6	Koptel'tsev V. (selber)	20	116	264	2025-09-20 22:13:46	2025-09-20 22:17:11	3
7	Krasovskij E.A. (pegoopik)	1	262	264	2025-09-20 11:13:01	2025-09-20 11:14:31	2
8	Sarkis'yan G. (gennadi_s)	21	115	181	2025-09-06 14:04:35		37963
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		120814
10	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		242535
11	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		316591
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		324689
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		354937
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		367126
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		514979
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		516287
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		539037
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		566478
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		648576
20	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		760641
21	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		760641
22	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		789797
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		816318
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		829950
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		895992
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		899306
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		901695
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		934360
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		979536
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		986623
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1011199
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1256231
33	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1293787
34	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1327777
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1431766
36	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1527931
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1567139
38	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1684049
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1830630
40	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1944679
41	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2082386
42	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2210738
43	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2345092
44	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2387279
45	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2391026
46	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2633092
47	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2700455
48	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2774785
49	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2839739
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2847710
51	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2887225
52	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2910952
53	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3221341
54	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3248623
55	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3256685
56	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3274968
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3319047
58	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3459022
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3557290
60	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3560471
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3702662
62	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3763209
63	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3816568
64	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3864033
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3956100
66	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3960009
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3960088
68	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3982717
69	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3996874
70	F (uff)	65	25	95	2018-01-22 15:57:03		4046810
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4098479
72	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4135949
73	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4137710
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4138778
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4176493
76	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4203610
77	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4236673
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4313318
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4359862
80	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4364012
81	F (uff)	65	25	185	2017-06-01 10:27:49		4385540
82	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4425412
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4487304
84	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4722207
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4757680
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4836903
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4967239
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5009338
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5178758
90	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5210446
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5244445
92	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5253806
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5279653
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5293956
95	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5295642
96	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5307252
97	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5310823
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5314154
99	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5357840
100	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5359107

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

Copyright SQL-EX © 2002-2025. All rights reserved.
contact