Recent leaders activity at "SQL Exercises"

SQL exercises

January 01, 00:11 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: 15376

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	32	75	219	2025-12-31 15:27:52	2025-12-31 20:05:34	278
2	Petrov Y. (YuriPetrov)	32	75	215	2025-12-29 23:33:14	2025-12-30 01:24:17	111
3	Sarkis'yan G. (gennadi_s)	17	134	189	2025-12-25 14:50:28		9201
4	Koptel'tsev V. (selber)	21	116	149	2025-12-24 22:13:41		10198
5	Petrov Y. (YuriPetrov)	32	75	238	2025-12-21 01:40:19	2025-12-21 02:29:32	49
6	Petrov Y. (YuriPetrov)	32	75	235	2025-12-20 17:12:38	2025-12-20 17:59:08	47
7	Petrov Y. (YuriPetrov)	32	75	239	2025-12-20 00:52:23	2025-12-20 01:31:37	39
8	Petrov Y. (YuriPetrov)	32	75	236	2025-12-19 00:26:50	2025-12-19 01:32:46	66
9	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		38795
10	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		250498
11	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		372219
12	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		446275
13	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		454373
14	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		484621
15	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		496810
16	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		644663
17	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		645971
18	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		668721
19	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		696161
20	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		778260
21	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		890325
22	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		890325
23	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		919481
24	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		946002
25	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		959633
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1025676
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1028990
28	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1031379
29	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1064044
30	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1109220
31	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1116307
32	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1140883
33	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1385915
34	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1423471
35	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1457461
36	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1561450
37	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1657614
38	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1696823
39	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1813732
40	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1960314
41	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2212070
42	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2340422
43	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2474776
44	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2516963
45	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2520710
46	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2762776
47	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2830139
48	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2904469
49	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2969423
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2977394
51	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3016908
52	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3040636
53	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3351025
54	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3378307
55	Romanov K.Yu. (kostik)	308	0	12	2019-07-25 08:42:10		3386369
56	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3404652
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3448731
58	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3588706
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3686974
60	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3690155
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3832346
62	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3892893
63	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3946252
64	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3993717
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4085783
66	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4089693
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4089771
68	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4112401
69	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4126558
70	F (uff)	65	25	95	2018-01-22 15:57:03		4176494
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4228163
72	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4265632
73	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4267394
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4268462
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4306177
76	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4333294
77	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4366357
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4443002
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4489546
80	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4493695
81	F (uff)	65	25	185	2017-06-01 10:27:49		4515223
82	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4555096
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4616987
84	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4851891
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4887364
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4966587
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5096922
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5139022
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5308442
90	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5340130
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5374129
92	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5383490
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5409336
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5423640
95	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5425326
96	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5436936
97	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5440507
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5443838
99	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5487523
100	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5488790

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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