Recent leaders activity at "SQL Exercises"

SQL exercises

December 03, 08:48 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: 15374

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	18	131	188	2025-11-30 13:49:15		4019
2	Sarkis'yan G. (gennadi_s)	18	131	187	2025-11-21 15:27:25	2025-11-25 14:09:56	5683
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		209255
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		330976
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		405032
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		413130
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		443379
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		455567
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		603420
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		604728
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		627478
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		654919
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		737017
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		849082
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		849082
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		878238
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		904759
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		918391
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		984433
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		987747
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		990136
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1022801
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1067977
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1075064
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1099641
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1344672
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1382228
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1416218
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1520207
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1616372
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1655580
32	Lukov D.R. (Gendalf)	241	0	90	2022-07-21 11:18:50		1772490
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1919071
34	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2170827
35	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2299179
36	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2433533
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2475720
38	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2479467
39	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2721533
40	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2788896
41	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2863226
42	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2928180
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2936151
44	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2975666
45	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2999393
46	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3309782
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3337064
48	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3345126
49	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3363410
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3407488
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3547463
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3645731
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3648912
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3791103
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3851650
56	Voevutskij S.A. (SergLK)	213	0	45	2018-07-01 13:19:14		3905009
57	Zyrin V.E. (Vezyr)	539	0	29	2018-05-29 14:14:19		3952474
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4044541
59	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4048450
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4048529
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4071158
62	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4085315
63	F (uff)	65	25	95	2018-01-22 15:57:03		4135251
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4186920
65	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4224390
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4226151
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4227219
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4264934
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4292051
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4325114
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4401759
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4448304
73	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4452453
74	F (uff)	65	25	185	2017-06-01 10:27:49		4473981
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4513854
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4575745
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4810648
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4846121
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4925344
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5055680
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5097779
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5267200
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5298887
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5332886
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5342247
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5368094
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5382398
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5384084
89	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5395693
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5399264
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5402595
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5446281
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5447548
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5456109
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5465840
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5474466
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5704905
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5706532
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5754692
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5782852

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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