Recent leaders activity at "SQL Exercises"

SQL exercises

October 11, 04:45 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: 15170

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		132693
3	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		254413
4	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		328469
5	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		336568
6	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		366816
7	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		379004
8	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		526857
9	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		528165
10	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		550916
11	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		578356
12	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		660454
13	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		772519
14	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		772519
15	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		801675
16	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		828196
17	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		841828
18	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		907870
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		911184
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		913574
21	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		946239
22	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		991414
23	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		998501
24	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1023078
25	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1268110
26	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1305666
27	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1339655
28	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1443644
29	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1539809
30	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1579017
31	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1695927
32	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1842508
33	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1956558
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2094265
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2222617
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2356971
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2399157
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2402905
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2644971
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2712334
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2786664
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2851618
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2859588
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2899103
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2922830
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3233220
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3260502
48	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3268564
49	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3286847
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3330925
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3470901
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3569168
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3572349
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3714540
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3775087
56	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3828447
57	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3875911
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3967978
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3971887
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3971966
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		3994595
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4008752
63	F (uff)	65	25	95	2018-01-22 15:57:03		4058689
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4110357
65	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4147827
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4149588
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4150657
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4188371
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4215488
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4248551
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4325196
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4371741
73	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4375890
74	F (uff)	65	25	185	2017-06-01 10:27:49		4397418
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4437291
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4499182
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4734086
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4769558
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4848782
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4979117
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5021216
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5190637
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5222324
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5256323
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5265685
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5291531
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5305835
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5307521
89	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5319130
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5322701
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5326032
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5369718
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5370985
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5379547
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5389277
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5397904
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5628343
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5629969
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5678129
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5706289

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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