Recent leaders activity at "SQL Exercises"

SQL exercises

December 17, 00:08 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: 15352

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Kostomarov A.V. (al29)	5	247	88	2025-12-16 13:08:02	2025-12-16 14:28:09	80
2	Sarkis'yan G. (gennadi_s)	17	134	188	2025-11-30 13:49:15	2025-12-15 18:47:38	21898
3	Petrov Y. (YuriPetrov)	37	64	88	2025-12-10 15:24:13	2025-12-10 15:35:04	11
4	Kostomarov A.V. (al29)	5	247	32	2025-12-08 12:39:14	2025-12-09 14:51:32	1572
5	Petrov Y. (YuriPetrov)	37	64	32	2025-12-09 02:20:04	2025-12-09 03:54:09	94
6	Petrov Y. (YuriPetrov)	37	64	5	2025-12-08 14:40:28	2025-12-08 15:14:01	34
7	Kostomarov A.V. (al29)	5	247	5	2025-12-05 14:04:47	2025-12-08 10:54:29	4130
8	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		17192
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		228895
10	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		350615
11	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		424671
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		432770
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		463018
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		475207
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		623059
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		624367
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		647118
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		674558
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		756657
20	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		868721
21	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		868722
22	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		897878
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		924398
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		938030
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1004072
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1007386
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1009776
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1042441
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1087617
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1094703
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1119280
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1364312
33	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1401868
34	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1435858
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1539846
36	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1636011
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1675220
38	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1792129
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1938710
40	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2190467
41	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		2318819
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2453173
43	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2495359
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2499107
45	Kozharinov A. (bubala)	207	0	10	2020-09-30 09:55:07		2741173
46	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2808536
47	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2882866
48	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2947820
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2955791
50	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2995305
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3019032
52	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3329422
53	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3356704
54	Romanov K.Yu. (kostik)	307	0	12	2019-07-25 08:42:10		3364766
55	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3383049
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3427128
57	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3567103
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3665371
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3668552
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3810743
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3871290
62	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3924649
63	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3972114
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4064180
65	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		4068089
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4068168
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4090798
68	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		4104955
69	F (uff)	65	25	95	2018-01-22 15:57:03		4154891
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4206559
71	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4244029
72	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4245790
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4246859
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4284574
75	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4311691
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4344753
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4421398
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4467943
79	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4472092
80	F (uff)	65	25	185	2017-06-01 10:27:49		4493620
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4533493
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4595384
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4830288
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4865761
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4944984
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5075319
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5117419
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5286839
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5318527
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5352526
91	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5361887
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5387733
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5402037
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5403723
95	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5415332
96	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5418904
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5422235
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5465920
99	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5467187
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5475749

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

Copyright SQL-EX © 2002-2025. All rights reserved.
contact