Recent leaders activity at "SQL Exercises"

SQL exercises

August 01, 02:53 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: 15136

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	19	132	198	2026-07-12 02:54:38	2026-07-31 20:31:37	28417
2	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		799
3	Williams B. (BW)	35	67	236	2026-07-29 13:21:56	2026-07-31 13:32:08	2890
4	Vyazovetskov A.S. (alex_v)	6	245	181	2026-07-29 14:43:59	2026-07-30 18:38:40	1675
5	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		3692
6	Williams B. (BW)	35	67	308	2026-07-23 14:59:30	2026-07-29 13:19:06	8540
7	Sarkis'yan G. (gennadi_s)	15	176	203	2026-07-28 14:11:50	2026-07-28 15:38:56	87
8	Filippkin D.V. (_dimon_)	3	259	264	2026-07-23 15:54:45	2026-07-23 15:55:46	1
9	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04	2026-07-23 15:27:06	747609
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		12400
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		15168
12	Sarkis'yan G. (gennadi_s)	15	176	202	2026-07-19 14:34:28	2026-07-20 18:03:08	1649
13	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		65294
14	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		99723
15	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		120329
16	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		133388
17	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		143616
18	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		144458
19	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		175170
20	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		268397
21	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		344237
22	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		555940
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		790063
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		802252
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		950105
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		951413
27	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		974163
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1083702
29	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1195767
30	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1195767
31	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1224923
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1251444
33	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1265075
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1331118
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1334432
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1336821
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1369486
38	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1421749
39	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1446325
40	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1762903
41	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1866892
42	Koptel'tsev V. (selber)	19	132	237	2022-11-06 21:16:51		1963056
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2002265
44	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2119174
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2265756
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2517512
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2645864
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2780218
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2822405
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2826152
51	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3068218
52	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3135581
53	Koptel'tsev V. (selber)	19	132	259	2020-06-24 00:22:07		3209911
54	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3274865
55	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3282836
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3322351
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3346078
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3656467
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3683749
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3691811
61	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3710094
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3754173
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3894148
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3992416
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3995597
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4137788
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4198335
68	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4251694
69	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4299159
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4391226
71	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4395135
72	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4395213
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4417843
74	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4432000
75	F (uff)	65	25	95	2018-01-22 15:57:03		4481936
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4533605
77	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4571075
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4572836
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4573904
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4611619
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4638736
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4671799
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4748444
84	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4794988
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4799137
86	F (uff)	65	25	185	2017-06-01 10:27:49		4820665
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4860538
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4922429
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5157333
90	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5192806
91	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5272029
92	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5402365
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5444464
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5613884
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5645572
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5679571
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5688932
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5714779
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5729082
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5730768

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

Copyright SQL-EX © 2002-2026. All rights reserved.
contact