Recent leaders activity at "SQL Exercises"

SQL exercises

March 19, 20:36 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: 15421

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Zajtsev V.S. (Sleeping)	22	118	32	2026-03-19 13:18:10	2026-03-19 14:58:33	100
2	Zajtsev V.S. (Sleeping)	22	118	264	2026-03-19 12:44:12	2026-03-19 13:12:45	29
3	Zajtsev V.S. (Sleeping)	22	118	239	2026-03-19 11:19:45	2026-03-19 12:26:56	67
4	Zajtsev V.S. (Sleeping)	22	118	150	2023-04-18 11:40:16	2026-03-19 11:14:56	1535015
5	Koptel'tsev V. (selber)	20	122	179	2026-02-21 19:34:16	2026-03-09 22:57:01	23243
6	Polyakov V.M. (rock_4)	133	0	138	2026-02-20 17:03:21		39094
7	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		75061
8	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		150901
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		362604
10	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		484324
11	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		566479
12	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		596727
13	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		608915
14	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		756768
15	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		758076
16	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		780827
17	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		890366
18	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1002430
19	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1002431
20	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1031586
21	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1058107
22	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1071739
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1137781
24	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1141095
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1143485
26	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1176150
27	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1228412
28	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1252989
29	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1569566
30	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1673555
31	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1769720
32	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1808929
33	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1925838
34	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2072419
35	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2324176
36	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2452528
37	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2586882
38	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2629068
39	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2632816
40	Kozharinov A. (bubala)	210	0	10	2020-09-30 09:55:07		2874882
41	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2942245
42	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3016575
43	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3081529
44	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3089500
45	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3129014
46	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3152741
47	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3463131
48	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3490413
49	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3498475
50	Kordyum A. (alko58)	228	0	12	2019-07-12 15:58:52		3516758
51	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3560837
52	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3700812
53	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3799080
54	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3802260
55	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3944451
56	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4004999
57	Voevutskij S.A. (SergLK)	216	0	45	2018-07-01 13:19:14		4058358
58	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4105823
59	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4197889
60	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4201798
61	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4201877
62	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4224507
63	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4238663
64	F (uff)	65	25	95	2018-01-22 15:57:03		4288600
65	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4340268
66	Kordyum A. (alko58)	228	0	101	2017-11-21 18:18:43		4377738
67	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4379499
68	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4380568
69	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4418283
70	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4445399
71	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4478462
72	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4555107
73	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4601652
74	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4605801
75	F (uff)	65	25	185	2017-06-01 10:27:49		4627329
76	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4667202
77	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4729093
78	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4963997
79	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4999470
80	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5078693
81	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5209028
82	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5251127
83	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5420548
84	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5452236
85	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5486235
86	Fomichev A.V. (Fomichev)	198	0	101	2015-10-07 11:21:04		5495596
87	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5521442
88	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5535746
89	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5537432
90	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5549041
91	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5552612
92	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5555943
93	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5599629
94	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5600896
95	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5609458
96	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5619188
97	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5627815
98	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5858254
99	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5859880
100	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5908041

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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