Recent leaders activity at "SQL Exercises"

SQL exercises

December 30, 05:58 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: 15370

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Petrov Y. (YuriPetrov)	33	73	215	2025-12-29 23:33:14	2025-12-30 01:24:17	111
2	Sarkis'yan G. (gennadi_s)	17	134	189	2025-12-25 14:50:28		6668
3	Koptel'tsev V. (selber)	21	116	149	2025-12-24 22:13:41		7665
4	Petrov Y. (YuriPetrov)	33	73	238	2025-12-21 01:40:19	2025-12-21 02:29:32	49
5	Petrov Y. (YuriPetrov)	33	73	235	2025-12-20 17:12:38	2025-12-20 17:59:08	47
6	Petrov Y. (YuriPetrov)	33	73	239	2025-12-20 00:52:23	2025-12-20 01:31:37	39
7	Petrov Y. (YuriPetrov)	33	73	236	2025-12-19 00:26:50	2025-12-19 01:32:46	66
8	Lukov D.R. (Gendalf)	242	0	32	2025-12-05 01:36:21		36263
9	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		247966
10	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		369686
11	Fomichev A.V. (Fomichev)	197	0	7	2025-02-25 02:16:37		443742
12	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		451841
13	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		482089
14	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		494277
15	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		642130
16	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		643438
17	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		666189
18	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		693629
19	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		775728
20	Slavutinskij V.V. (Vasilko)	448	0	5	2024-04-22 17:26:35		887792
21	Slavutinskij V.V. (Vasilko)	448	0	7	2024-04-22 17:26:21		887793
22	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		916948
23	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		943469
24	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		957101
25	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1023143
26	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1026457
27	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1028847
28	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1061512
29	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		1106687
30	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1113774
31	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1138351
32	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1383383
33	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1420939
34	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1454928
35	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1558917
36	Koptel'tsev V. (selber)	21	116	237	2022-11-06 21:16:51		1655082
37	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1694291
38	Lukov D.R. (Gendalf)	242	0	90	2022-07-21 11:18:50		1811200
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		1957781
40	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		2209538
41	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2337890
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2472244
43	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2514430
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2518178
45	Kozharinov A. (bubala)	208	0	10	2020-09-30 09:55:07		2760244
46	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2827607
47	Koptel'tsev V. (selber)	21	116	259	2020-06-24 00:22:07		2901937
48	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		2966891
49	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2974861
50	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3014376
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3038103
52	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		3348493
53	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3375775
54	Romanov K.Yu. (kostik)	308	0	12	2019-07-25 08:42:10		3383837
55	Kordyum A. (alko58)	225	0	12	2019-07-12 15:58:52		3402120
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3446199
57	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3586174
58	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3684441
59	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3687622
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3829813
61	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3890361
62	Voevutskij S.A. (SergLK)	214	0	45	2018-07-01 13:19:14		3943720
63	Zyrin V.E. (Vezyr)	540	0	29	2018-05-29 14:14:19		3991185
64	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4083251
65	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4087160
66	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4087239
67	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4109869
68	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4124025
69	F (uff)	65	25	95	2018-01-22 15:57:03		4173962
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4225630
71	Kordyum A. (alko58)	225	0	101	2017-11-21 18:18:43		4263100
72	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4264861
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4265930
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4303645
75	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4330761
76	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4363824
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4440469
78	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4487014
79	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4491163
80	F (uff)	65	25	185	2017-06-01 10:27:49		4512691
81	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4552564
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4614455
83	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4849359
84	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4884831
85	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4964055
86	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5094390
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5136489
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5305910
89	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5337598
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5371596
91	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5380958
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5406804
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5421108
94	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5422794
95	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5434403
96	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5437974
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5441305
98	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5484991
99	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5486258
100	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5494820

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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