Recent leaders activity at "SQL Exercises"

SQL exercises

April 01, 19:01 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: 15419

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		458
2	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
3	Polyakov V.M. (rock_4)	116	6	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
4	Sarkis'yan G. (gennadi_s)	15	156	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
5	Polyakov V.M. (rock_4)	116	6	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
6	Polyakov V.M. (rock_4)	116	6	139	2026-03-24 13:03:07	2026-03-25 16:32:20	1649
7	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47		10623
8	Polyakov V.M. (rock_4)	116	6	138	2026-02-20 17:03:21	2026-03-24 11:15:38	45732
9	Zajtsev V.S. (Sleeping)	22	118	32	2026-03-19 13:18:10	2026-03-19 14:58:33	100
10	Zajtsev V.S. (Sleeping)	22	118	264	2026-03-19 12:44:12	2026-03-19 13:12:45	29
11	Zajtsev V.S. (Sleeping)	22	118	239	2026-03-19 11:19:45	2026-03-19 12:26:56	67
12	Zajtsev V.S. (Sleeping)	22	118	150	2023-04-18 11:40:16	2026-03-19 11:14:56	1535015
13	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		93686
14	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		169525
15	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		381229
16	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		502949
17	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		585104
18	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		615352
19	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		627540
20	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		775393
21	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		776701
22	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		799452
23	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		908990
24	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1021055
25	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1021055
26	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1050211
27	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1076732
28	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1090364
29	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1156406
30	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1159720
31	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1162110
32	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1194775
33	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1247037
34	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1271614
35	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1588191
36	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1692180
37	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1788345
38	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1827553
39	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1944463
40	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2091044
41	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2342801
42	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2471153
43	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2605507
44	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2647693
45	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2651441
46	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2893507
47	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2960870
48	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3035200
49	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3100154
50	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3108124
51	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3147639
52	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3171366
53	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3481755
54	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3509038
55	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3517100
56	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3535383
57	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3579461
58	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3719436
59	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3817704
60	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3820885
61	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3963076
62	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4023623
63	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4076982
64	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4124447
65	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4216514
66	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4220423
67	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4220502
68	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4243131
69	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4257288
70	F (uff)	65	25	95	2018-01-22 15:57:03		4307225
71	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4358893
72	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4396363
73	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4398124
74	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4399192
75	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4436907
76	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4464024
77	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4497087
78	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4573732
79	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4620277
80	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4624426
81	F (uff)	65	25	185	2017-06-01 10:27:49		4645954
82	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4685827
83	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4747718
84	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4982621
85	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5018094
86	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5097318
87	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5227653
88	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5269752
89	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5439173
90	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5470860
91	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5504859
92	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5514221
93	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5540067
94	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5554371
95	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5556057
96	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5567666
97	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5571237
98	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5574568
99	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5618254
100	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5619521

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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