Recent leaders activity at "SQL Exercises"

SQL exercises

October 10, 20:45 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: 15169

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
2	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		132212
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		253933
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		327989
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		336087
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		366335
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		378524
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		526376
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		527685
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		550435
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		577875
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		659974
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		772039
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		772039
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		801195
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		827716
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		841347
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		907390
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		910704
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		913093
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		945758
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		990934
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		998021
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1022597
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1267629
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1305185
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1339175
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1443164
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1539328
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1578537
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1695446
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1842028
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1956077
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2093784
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2222136
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2356490
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2398677
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2402424
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2644490
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2711853
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2786183
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2851137
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2859108
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2898622
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2922350
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3232739
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3260021
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3268083
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3286366
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3330445
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3470420
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3568688
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3571869
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3714060
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3774607
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3827966
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3875431
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3967497
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3971407
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3971485
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3994115
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4008272
63	F (uff)	65	25	95	2018-01-22 15:57:03		4058208
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4109877
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4147346
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4149108
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4150176
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4187891
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4215008
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4248071
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4324716
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4371260
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4375409
74	F (uff)	65	25	185	2017-06-01 10:27:49		4396937
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4436810
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4498701
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4733605
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4769078
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4848301
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4978636
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5020736
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5190156
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5221844
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5255843
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5265204
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5291050
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5305354
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5307040
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5318650
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5322221
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5325552
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5369237
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5370504
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5379066
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5388796
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5397423
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5627862
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5629488
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5677649
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5705809

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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