Recent leaders activity at "SQL Exercises"

SQL exercises

October 05, 23:26 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: 15168

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	Sarkis'yan G. (gennadi_s)	21	115	181	2025-09-06 14:04:35		42322
4	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		125174
5	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		246894
6	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		320950
7	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		329049
8	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		359297
9	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		371485
10	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		519338
11	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		520646
12	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		543397
13	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		570837
14	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		652935
15	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		765000
16	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		765000
17	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		794156
18	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		820677
19	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		834309
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		900351
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		903665
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		906055
23	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		938719
24	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		983895
25	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		990982
26	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1015559
27	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1260591
28	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1298146
29	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1332136
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1436125
31	Koptel'tsev V. (selber)	20	116	237	2022-11-06 21:16:51		1532290
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1571498
33	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1688408
34	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1834989
35	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1949039
36	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2086746
37	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2215098
38	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2349452
39	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2391638
40	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2395385
41	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2637452
42	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2704814
43	Koptel'tsev V. (selber)	20	116	259	2020-06-24 00:22:07		2779145
44	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2844099
45	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2852069
46	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2891584
47	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2915311
48	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3225700
49	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3252982
50	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3261044
51	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3279328
52	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3323406
53	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3463381
54	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3561649
55	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3564830
56	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3707021
57	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3767568
58	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3820927
59	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3868392
60	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3960459
61	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3964368
62	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3964447
63	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3987076
64	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4001233
65	F (uff)	65	25	95	2018-01-22 15:57:03		4051170
66	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4102838
67	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4140308
68	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4142069
69	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4143137
70	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4180852
71	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4207969
72	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4241032
73	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4317677
74	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4364222
75	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4368371
76	F (uff)	65	25	185	2017-06-01 10:27:49		4389899
77	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4429772
78	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4491663
79	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4726566
80	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4762039
81	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4841263
82	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4971598
83	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5013697
84	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5183118
85	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5214805
86	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5248804
87	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5258166
88	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5284012
89	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5298316
90	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5300002
91	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5311611
92	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5315182
93	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5318513
94	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5362199
95	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5363466
96	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5372028
97	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5381758
98	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5390385
99	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5620823
100	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5622450

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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