Recent leaders activity at "SQL Exercises"

SQL exercises

October 15, 08:19 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: 15195

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	20	119	182	2025-10-13 15:25:57		2454
2	Sarkis'yan G. (gennadi_s)	20	119	181	2025-09-06 14:04:35	2025-10-06 15:31:50	43287
3	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		138667
4	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		260387
5	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		334443
6	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		342542
7	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		372790
8	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		384978
9	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		532831
10	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		534139
11	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		556890
12	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		584330
13	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		666428
14	Slavutinskij V.V. (Vasilko)	447	0	5	2024-04-22 17:26:35		778493
15	Slavutinskij V.V. (Vasilko)	447	0	7	2024-04-22 17:26:21		778493
16	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		807649
17	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		834170
18	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		847802
19	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		913844
20	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		917158
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		919548
22	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		952213
23	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		997388
24	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1004475
25	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1029052
26	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1274084
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1311640
28	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1345629
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1449618
30	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1545783
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1584991
32	Lukov D.R. (Gendalf)	240	0	90	2022-07-21 11:18:50		1701901
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1848482
34	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1962532
35	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2100239
36	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2228591
37	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2362945
38	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2405131
39	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2408879
40	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2650945
41	Samarin A. (not.yet.sql.master)	141	0	112	2020-08-14 15:12:10		2718308
42	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2792638
43	Samarin A. (not.yet.sql.master)	141	0	138	2020-05-09 21:48:04		2857592
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2865562
45	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2905077
46	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2928804
47	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3239194
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3266476
49	Romanov K.Yu. (kostik)	306	0	12	2019-07-25 08:42:10		3274538
50	Kordyum A. (alko58)	224	0	12	2019-07-12 15:58:52		3292821
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3336899
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3476875
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3575142
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3578323
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3720514
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3781061
57	Voevutskij S.A. (SergLK)	212	0	45	2018-07-01 13:19:14		3834421
58	Zyrin V.E. (Vezyr)	538	0	29	2018-05-29 14:14:19		3881886
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3973952
60	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3977861
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3977940
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4000569
63	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4014726
64	F (uff)	65	25	95	2018-01-22 15:57:03		4064663
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4116331
66	Kordyum A. (alko58)	224	0	101	2017-11-21 18:18:43		4153801
67	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4155562
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4156631
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4194345
70	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4221462
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4254525
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4331170
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4377715
74	Vorob'ev E.V. (Johnnymnemonic)	159	0	138	2017-06-16 09:15:49		4381864
75	F (uff)	65	25	185	2017-06-01 10:27:49		4403392
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4443265
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4505156
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4740060
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4775532
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4854756
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4985091
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5027190
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5196611
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5228298
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5262297
86	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5271659
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5297505
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5311809
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5313495
90	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5325104
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5328675
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5332006
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5375692
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5376959
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5385521
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5395251
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5403878
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5634317
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5635943
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5684104

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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