Recent leaders activity at "SQL Exercises"

SQL exercises

April 08, 20:12 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: 15070

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	38	62	158	2026-04-06 16:38:40	2026-04-07 00:39:10	481
2	Komarov A.N. (Shveda Saulya)	38	62	24	2026-04-06 16:13:31	2026-04-06 16:30:45	17
3	Polyakov V.M. (rock_4)	116	6	146	2026-04-06 15:53:06		3139
4	Polyakov V.M. (rock_4)	116	6	254	2026-03-25 09:58:47	2026-04-06 15:22:00	17603
5	Sarkis'yan G. (gennadi_s)	15	159	196	2026-04-04 14:52:32	2026-04-06 14:56:09	2884
6	Chernov D.V. (Kursist)	2	262	24	2026-04-05 21:27:47	2026-04-05 22:13:10	45
7	Koptel'tsev V. (selber)	20	122	24	2026-04-05 18:00:17	2026-04-05 18:20:48	21
8	Kurochkin P.A. (qwrqwr)	11	211	24	2026-04-05 13:51:41	2026-04-05 14:52:27	61
9	Sarkis'yan G. (gennadi_s)	15	159	24	2026-04-04 13:32:52	2026-04-04 13:45:41	13
10	Krasovskij E.A. (pegoopik)	1	262	24	2026-04-03 23:24:48	2026-04-03 23:24:51	0
11	Polyakov V.M. (rock_4)	116	6	148	2026-04-01 11:23:28		10609
12	Polyakov V.M. (rock_4)	116	6	140	2026-03-31 09:33:07	2026-04-01 10:33:47	1501
13	Polyakov V.M. (rock_4)	116	6	256	2026-03-25 09:59:37	2026-03-30 17:47:18	7668
14	Sarkis'yan G. (gennadi_s)	15	159	195	2026-03-23 13:36:04	2026-03-29 14:18:04	8682
15	Polyakov V.M. (rock_4)	116	6	142	2026-03-26 09:29:52	2026-03-27 15:24:51	1795
16	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		103836
17	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		179676
18	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		391379
19	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		513099
20	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		595254
21	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		625502
22	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		637691
23	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		785543
24	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		786851
25	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		809602
26	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		919141
27	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		1031205
28	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		1031206
29	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1060362
30	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1086882
31	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1100514
32	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1166557
33	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1169870
34	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1172260
35	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1204925
36	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1257187
37	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1281764
38	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1598342
39	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1702330
40	Koptel'tsev V. (selber)	20	122	237	2022-11-06 21:16:51		1798495
41	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1837704
42	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		1954613
43	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2101194
44	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2352951
45	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2481303
46	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2615657
47	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2657843
48	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2661591
49	Kozharinov A. (bubala)	211	0	10	2020-09-30 09:55:07		2903657
50	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2971020
51	Koptel'tsev V. (selber)	20	122	259	2020-06-24 00:22:07		3045350
52	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3110304
53	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3118275
54	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3157789
55	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3181517
56	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3491906
57	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3519188
58	Romanov K.Yu. (kostik)	311	0	12	2019-07-25 08:42:10		3527250
59	Kordyum A. (alko58)	229	0	12	2019-07-12 15:58:52		3545533
60	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3589612
61	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3729587
62	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3827855
63	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3831036
64	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3973227
65	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		4033774
66	Voevutskij S.A. (SergLK)	217	0	45	2018-07-01 13:19:14		4087133
67	Zyrin V.E. (Vezyr)	545	0	29	2018-05-29 14:14:19		4134598
68	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4226664
69	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4230574
70	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4230652
71	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4253282
72	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4267439
73	F (uff)	65	25	95	2018-01-22 15:57:03		4317375
74	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4369043
75	Kordyum A. (alko58)	229	0	101	2017-11-21 18:18:43		4406513
76	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4408275
77	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4409343
78	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4447058
79	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4474175
80	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4507238
81	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4583882
82	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4630427
83	Vorob'ev E.V. (Johnnymnemonic)	162	0	138	2017-06-16 09:15:49		4634576
84	F (uff)	65	25	185	2017-06-01 10:27:49		4656104
85	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4695977
86	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4757868
87	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4992772
88	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		5028245
89	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5107468
90	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5237803
91	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5279903
92	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5449323
93	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5481011
94	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5515010
95	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5524371
96	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5550217
97	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5564521
98	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5566207
99	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5577816
100	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5581388

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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