Recent leaders activity at "SQL Exercises"

SQL exercises

November 12, 21:43 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: 15258

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	19	127	186	2025-11-12 16:36:56		307
2	Sarkis'yan G. (gennadi_s)	19	127	185	2025-11-08 14:38:59	2025-11-10 12:02:03	2723
3	Sarkis'yan G. (gennadi_s)	19	127	184	2025-10-30 12:40:58	2025-11-07 11:56:37	11476
4	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		179791
5	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		301511
6	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		375567
7	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		383666
8	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		413914
9	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		426102
10	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		573955
11	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		575263
12	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		598014
13	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		625454
14	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		707553
15	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		819617
16	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		819618
17	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		848773
18	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		875294
19	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		888926
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		954968
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		958282
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		960672
23	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		993337
24	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1038512
25	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1045599
26	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1070176
27	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1315208
28	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1352764
29	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1386753
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1490742
31	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1586907
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1626116
33	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1743025
34	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1889606
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2141363
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2269715
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2404069
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2446255
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2450003
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2692069
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2759432
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2833762
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2898716
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2906687
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2946201
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2969928
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3280318
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3307600
49	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3315662
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3333945
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3378024
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3517999
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3616267
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3619447
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3761638
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3822186
57	Voevutskij S.A. (SergLK)	213	0	45	2018-07-01 13:19:14		3875545
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3923010
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4015076
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4018985
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4019064
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4041694
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4055850
64	F (uff)	65	25	95	2018-01-22 15:57:03		4105787
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4157455
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4194925
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4196686
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4197755
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4235470
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4262586
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4295649
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4372294
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4418839
74	Vorob'ev E.V. (Johnnymnemonic)	160	0	138	2017-06-16 09:15:49		4422988
75	F (uff)	65	25	185	2017-06-01 10:27:49		4444516
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4484389
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4546280
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4781184
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4816657
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4895880
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5026215
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5068314
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5237735
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5269423
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5303422
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5312783
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5338629
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5352933
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5354619
90	Varenikov D.M. (Dmitriy Varenikov)	18	128	263	2015-08-31 08:35:37		5366228
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5369799
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5373130
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5416816
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5418083
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5426645
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5436375
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5445002
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5675441
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5677067
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5725228

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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