Recent leaders activity at "SQL Exercises"

SQL exercises

June 17, 20:47 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: 15116

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		1568
2	Makarov I.A. (_Bkmz_)	49	40	143	2026-06-12 10:09:54	2026-06-13 03:07:28	1018
3	Suprun D. (TimonSP)	77	15	24	2026-06-06 13:08:47	2026-06-06 13:25:05	16
4	Makarov I.A. (_Bkmz_)	49	40	168	2026-06-06 10:14:03	2026-06-06 11:42:23	88
5	Varenikov D.M. (Dmitriy Varenikov)	20	129	241	2026-05-23 22:21:57	2026-06-05 18:53:52	18512
6	Vyazovetskov A.S. (alex_v)	7	241	163	2026-06-04 13:05:06	2026-06-05 15:49:57	1605
7	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		35998
8	Koptel'tsev V. (selber)	19	129	241	2026-05-23 20:23:43		36024
9	Williams B. (BW)	35	66	24	2026-05-15 13:25:32		47962
10	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		56603
11	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		69662
12	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		79890
13	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		80732
14	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		111444
15	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		204671
16	Lukov D.R. (Gendalf)	245	0	32	2025-12-05 01:36:21		280511
17	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		492214
18	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		613935
19	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		696089
20	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		726337
21	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		738526
22	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		886379
23	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		887687
24	Frolov K.A. (Murderface_)	134	0	138	2024-09-23 14:49:59		910437
25	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1019976
26	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1132041
27	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1132041
28	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1161197
29	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1187718
30	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1201349
31	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1267392
32	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1270706
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1273095
34	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1305760
35	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1358023
36	Rudikov E. (cubie)	135	0	138	2023-10-31 17:27:54		1382599
37	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1699177
38	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1803166
39	Koptel'tsev V. (selber)	19	129	237	2022-11-06 21:16:51		1899330
40	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1938539
41	Lukov D.R. (Gendalf)	245	0	90	2022-07-21 11:18:50		2055449
42	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2202030
43	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2453786
44	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2582138
45	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2716492
46	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2758679
47	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2762426
48	Kozharinov A. (bubala)	212	0	10	2020-09-30 09:55:07		3004492
49	Samarin A. (not.yet.sql.master)	146	0	112	2020-08-14 15:12:10		3071855
50	Koptel'tsev V. (selber)	19	129	259	2020-06-24 00:22:07		3146185
51	Samarin A. (not.yet.sql.master)	146	0	138	2020-05-09 21:48:04		3211139
52	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3219110
53	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3258625
54	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3282352
55	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3592741
56	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3620023
57	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3628085
58	Kordyum A. (alko58)	230	0	12	2019-07-12 15:58:52		3646368
59	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3690447
60	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3830422
61	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3928690
62	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3931871
63	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4074062
64	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4134609
65	Voevutskij S.A. (SergLK)	218	0	45	2018-07-01 13:19:14		4187968
66	Zyrin V.E. (Vezyr)	549	0	29	2018-05-29 14:14:19		4235433
67	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4327500
68	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4331409
69	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4331487
70	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4354117
71	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4368274
72	F (uff)	65	25	95	2018-01-22 15:57:03		4418210
73	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4469879
74	Kordyum A. (alko58)	230	0	101	2017-11-21 18:18:43		4507349
75	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4509110
76	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4510178
77	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4547893
78	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4575010
79	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4608073
80	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4684718
81	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4731262
82	Vorob'ev E.V. (Johnnymnemonic)	163	0	138	2017-06-16 09:15:49		4735412
83	F (uff)	65	25	185	2017-06-01 10:27:49		4756940
84	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4796812
85	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4858704
86	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5093607
87	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5129080
88	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5208303
89	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5338639
90	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5380738
91	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5550158
92	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5581846
93	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5615845
94	Fomichev A.V. (Fomichev)	199	0	101	2015-10-07 11:21:04		5625206
95	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5651053
96	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5665356
97	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5667042
98	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5678652
99	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5682223
100	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5685554

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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