Recent leaders activity at "SQL Exercises"

SQL exercises

October 05, 15:50 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: 13878

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Filippkin D.V. (_dimon_)	3	259	240	2026-10-05 14:13:38		97
2	Safronov P.A. (Paulus73)	135	0	53	2026-10-05 09:54:21	2026-10-05 12:48:36	174
3	Vinogradova S.M. (Tigra1)	124	4	140	2026-10-04 15:59:22	2026-10-05 11:25:11	1166
4	Vinogradova S.M. (Tigra1)	124	4	139	2026-10-03 08:58:36	2026-10-03 17:36:51	518
5	Filippkin D.V. (_dimon_)	3	259	53	2026-10-02 10:34:22	2026-10-02 13:34:56	181
6	Kostomarov A.V. (al29)	5	247	53	2026-09-30 08:53:59		7617
7	Vinogradova S.M. (Tigra1)	124	4	53	2026-09-27 16:28:34	2026-09-27 18:57:12	149
8	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31	2026-09-27 11:56:35	5618
9	Sarkis'yan G. (gennadi_s)	14	187	303	2026-09-26 14:18:02	2026-09-26 14:40:37	23
10	Koptel'tsev V. (selber)	19	133	53	2026-09-20 05:35:11	2026-09-23 22:59:05	5364
11	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		40780
12	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		54849
13	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		65358
14	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		95177
15	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		98069
16	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		106778
17	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		109545
18	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		159672
19	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		194101
20	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		227765
21	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		237993
22	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		238835
23	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		269547
24	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		362774
25	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		438614
26	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		650318
27	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		884441
28	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		896629
29	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1044482
30	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1045790
31	Frolov K.A. (Murderface_)	136	0	138	2024-09-23 14:49:59		1068541
32	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1178079
33	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1290144
34	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1290144
35	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1319300
36	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1345821
37	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1359453
38	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1425495
39	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1428809
40	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1431199
41	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1463864
42	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1516126
43	Rudikov E. (cubie)	137	0	138	2023-10-31 17:27:54		1540703
44	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1857280
45	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1961269
46	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2057434
47	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2096642
48	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2213552
49	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2360133
50	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2611890
51	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2740242
52	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2874596
53	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2916782
54	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2920530
55	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3162596
56	Samarin A. (not.yet.sql.master)	148	0	112	2020-08-14 15:12:10		3229959
57	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3304289
58	Samarin A. (not.yet.sql.master)	148	0	138	2020-05-09 21:48:04		3369243
59	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3377213
60	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3416728
61	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3440455
62	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3750844
63	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3778126
64	Romanov K.Yu. (kostik)	313	0	12	2019-07-25 08:42:10		3786189
65	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3804472
66	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3848550
67	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3988525
68	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4086793
69	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4089974
70	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4232165
71	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4292712
72	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4346071
73	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4393536
74	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4485603
75	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4489512
76	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4489591
77	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4512220
78	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4526377
79	F (uff)	65	25	95	2018-01-22 15:57:03		4576314
80	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4627982
81	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4665452
82	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4667213
83	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4668281
84	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4705996
85	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4733113
86	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4766176
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4842821
88	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4889366
89	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4893515
90	F (uff)	65	25	185	2017-06-01 10:27:49		4915043
91	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4954916
92	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5016807
93	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5251710
94	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5287183
95	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5366407
96	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5496742
97	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5538841
98	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5708262
99	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5739949
100	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5773948

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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