Recent leaders activity at "SQL Exercises"

SQL exercises

February 19, 14:01 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: 15423

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Komarov A.N. (Shveda Saulya)	41	56	150	2023-11-22 17:11:28	2026-02-13 01:49:19	1171238
2	Sarkis'yan G. (gennadi_s)	16	149	194	2026-02-10 15:42:58		12859
3	Sarkis'yan G. (gennadi_s)	16	149	193	2026-02-02 14:48:13	2026-02-06 14:23:09	5735
4	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		34346
5	Lukov D.R. (Gendalf)	244	0	32	2025-12-05 01:36:21		110186
6	Chebykin D. (GriGrim)	38	62	210	2025-07-11 01:12:59		321889
7	Williams B. (BW)	35	66	262	2025-04-17 12:32:37		443609
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		525764
9	Chuvstvin M. (chuvstvinmaxim)	88	11	141	2025-01-29 11:09:56		556012
10	Chuvstvin M. (chuvstvinmaxim)	88	11	258	2025-01-21 00:01:28		568200
11	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		716053
12	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		717361
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		740112
14	Komarov A.N. (Shveda Saulya)	41	56	157	2024-09-04 13:29:47		767552
15	Zajtsev V.S. (Sleeping)	22	112	164	2024-07-09 13:11:22		849651
16	Slavutinskij V.V. (Vasilko)	453	0	5	2024-04-22 17:26:35		961715
17	Slavutinskij V.V. (Vasilko)	453	0	7	2024-04-22 17:26:21		961716
18	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		990871
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		1017392
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		1031024
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		1097066
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		1100380
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		1102770
24	Nikolaenko A.V. (Shadow77)	83	14	135	2023-12-24 02:07:10		1135435
25	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		1187697
26	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		1212274
27	Zajtsev V.S. (Sleeping)	22	112	150	2023-04-18 11:40:16		1494862
28	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1528851
29	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1632840
30	Koptel'tsev V. (selber)	21	119	237	2022-11-06 21:16:51		1729005
31	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1768214
32	Lukov D.R. (Gendalf)	244	0	90	2022-07-21 11:18:50		1885123
33	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2031704
34	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2283461
35	Fedevych V.I. (labuch_fedev)	37	65	221	2021-07-20 17:09:05		2411813
36	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2546167
37	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2588353
38	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2592101
39	Kozharinov A. (bubala)	209	0	10	2020-09-30 09:55:07		2834167
40	Samarin A. (not.yet.sql.master)	144	0	112	2020-08-14 15:12:10		2901530
41	Koptel'tsev V. (selber)	21	119	259	2020-06-24 00:22:07		2975860
42	Samarin A. (not.yet.sql.master)	144	0	138	2020-05-09 21:48:04		3040814
43	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		3048785
44	Fedevych V.I. (labuch_fedev)	37	65	226	2020-04-06 22:22:48		3088299
45	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3112026
46	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3422416
47	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3449698
48	Romanov K.Yu. (kostik)	309	0	12	2019-07-25 08:42:10		3457760
49	Kordyum A. (alko58)	227	0	12	2019-07-12 15:58:52		3476043
50	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3520122
51	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3660097
52	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3758365
53	Grishunin M.F. (MikhailFG)	92	10	144	2018-12-26 09:36:27		3761545
54	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		3903736
55	Skorohod I. (Dracul4ik)	78	15	45	2018-08-07 14:38:23		3964284
56	Voevutskij S.A. (SergLK)	215	0	45	2018-07-01 13:19:14		4017643
57	Zyrin V.E. (Vezyr)	544	0	29	2018-05-29 14:14:19		4065108
58	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		4157174
59	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4161083
60	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		4161162
61	Azbel' E.G. (enull)	77	15	148	2018-03-08 04:10:21		4183792
62	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4197948
63	F (uff)	65	25	95	2018-01-22 15:57:03		4247885
64	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4299553
65	Kordyum A. (alko58)	227	0	101	2017-11-21 18:18:43		4337023
66	Zajtsev V.S. (Sleeping)	22	112	190	2017-11-20 12:57:31		4338784
67	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4339853
68	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4377568
69	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		4404684
70	Skorohod I. (Dracul4ik)	78	15	156	2017-09-12 19:34:33		4437747
71	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4514392
72	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4560937
73	Vorob'ev E.V. (Johnnymnemonic)	161	0	138	2017-06-16 09:15:49		4565086
74	F (uff)	65	25	185	2017-06-01 10:27:49		4586614
75	Skorohod I. (Dracul4ik)	78	15	146	2017-05-04 17:54:53		4626487
76	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4688378
77	Skorohod I. (Dracul4ik)	78	15	144	2016-10-10 15:20:14		4923282
78	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4958755
79	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		5037978
80	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		5168313
81	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5210412
82	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5379833
83	Maslyaev V.S. (Velmont)	90	11	170	2015-11-06 14:01:20		5411521
84	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5445519
85	Fomichev A.V. (Fomichev)	197	0	101	2015-10-07 11:21:04		5454881
86	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5480727
87	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5495031
88	Frolov (dr.shtopor)	81	14	141	2015-09-08 10:04:55		5496717
89	Varenikov D.M. (Dmitriy Varenikov)	19	128	263	2015-08-31 08:35:37		5508326
90	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5511897
91	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5515228
92	Maslyaev V.S. (Velmont)	90	11	140	2015-07-27 05:27:50		5558914
93	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5560181
94	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5568743
95	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5578473
96	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5587100
97	Skorohod I. (Dracul4ik)	78	15	256	2015-01-28 15:03:11		5817539
98	Skorohod I. (Dracul4ik)	78	15	252	2015-01-27 11:56:41		5819165
99	Sysoev A.V. (Sysa)	49	39	143	2014-12-25 01:16:19		5867326
100	Grishin (alvigr)	79	15	185	2014-12-05 11:56:29		5895485

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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