Recent leaders activity at "SQL Exercises"

SQL exercises

April 19, 12:20 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: 15152

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	31	79	164	2025-04-11 16:03:00	2025-04-18 15:01:09	10018
2	Williams B. (BW)	34	66	262	2025-04-17 12:32:37		2868
3	Williams B. (BW)	34	66	303	2025-04-08 16:47:17	2025-04-17 12:24:23	12697
4	Koptel'tsev V. (selber)	21	110	167	2025-04-12 13:06:32		10034
5	Sarkis'yan G. (gennadi_s)	31	79	163	2025-03-30 14:14:08	2025-04-09 18:01:54	14628
6	Williams B. (BW)	34	66	306	2025-04-08 15:18:15	2025-04-08 16:42:28	84
7	Fomichev A.V. (Fomichev)	194	0	7	2025-02-25 02:16:37		76924
8	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		85022
9	Chuvstvin M. (chuvstvinmaxim)	87	11	141	2025-01-29 11:09:56		115270
10	Chuvstvin M. (chuvstvinmaxim)	87	11	258	2025-01-21 00:01:28		127459
11	Lyubomudrov R.G. (born2tilt)	70	22	162	2024-10-10 07:48:40		275312
12	Lyubomudrov R.G. (born2tilt)	70	22	202	2024-10-09 10:00:37		276620
13	Frolov K.A. (Murderface_)	133	0	138	2024-09-23 14:49:59		299370
14	Komarov A.N. (Shveda Saulya)	45	49	157	2024-09-04 13:29:47		326811
15	Zajtsev V.S. (Sleeping)	20	112	164	2024-07-09 13:11:22		408909
16	Slavutinskij V.V. (Vasilko)	444	0	5	2024-04-22 17:26:35		520974
17	Slavutinskij V.V. (Vasilko)	444	0	7	2024-04-22 17:26:21		520974
18	Williams B. (BW)	34	66	141	2024-04-02 11:30:28		550130
19	Kukushkin S.A. (smog)	15	153	194	2024-03-15 01:29:39		576651
20	Latyntsev N.G. (aks_nsk)	53	37	253	2024-03-05 14:17:51		590283
21	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	305	2024-01-19 17:35:31		656325
22	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	306	2024-01-17 10:21:39		659639
23	Kurbanoff N.I. (Nariman Kurbanoff)	99	9	71	2024-01-15 18:32:03		662028
24	Nikolaenko A.V. (Shadow77)	82	14	135	2023-12-24 02:07:10		694693
25	Komarov A.N. (Shveda Saulya)	45	49	150	2023-11-22 17:11:28		739869
26	Boiko D. (Angellore)	8	233	262	2023-11-17 19:04:36		746956
27	Rudikov E. (cubie)	134	0	138	2023-10-31 17:27:54		771532
28	Komarov A.N. (Shveda Saulya)	45	49	149	2023-05-14 13:36:07		1016564
29	Zajtsev V.S. (Sleeping)	20	112	150	2023-04-18 11:40:16		1054120
30	Shkarednyj I.N. (Gosha)	35	66	198	2023-03-25 21:10:27		1088110
31	Latyntsev N.G. (aks_nsk)	53	37	255	2023-01-12 16:01:39		1192099
32	Koptel'tsev V. (selber)	21	110	237	2022-11-06 21:16:51		1288264
33	Borisenkov D.V. (xuser)	98	9	173	2022-10-10 15:48:20		1327472
34	Lukov D.R. (Gendalf)	238	0	90	2022-07-21 11:18:50		1444382
35	Pavlov A.V. (Anton)	59	29	141	2022-04-10 16:17:39		1590963
36	Varenikov D.M. (Dmitriy Varenikov)	18	125	175	2022-01-21 11:28:01		1705012
37	Sigankov V.I. (vasilyvanc)	32	74	161	2021-10-17 20:21:01		1842719
38	Fedevych V.I. (labuch_fedev)	36	65	221	2021-07-20 17:09:05		1971071
39	Pusev D.V. (Pusev_Denis)	17	134	234	2021-04-18 09:55:08		2105425
40	Kukushkin S.A. (smog)	15	153	12	2021-03-20 02:48:36		2147612
41	Pusev D.V. (Pusev_Denis)	17	134	159	2021-03-17 12:21:10		2151359
42	Kozharinov A. (bubala)	204	0	10	2020-09-30 09:55:07		2393425
43	Samarin A. (not.yet.sql.master)	139	0	112	2020-08-14 15:12:10		2460788
44	Koptel'tsev V. (selber)	21	110	259	2020-06-24 00:22:07		2535118
45	Samarin A. (not.yet.sql.master)	139	0	138	2020-05-09 21:48:04		2600072
46	Karasyova N.V. (vlksm)	9	225	230	2020-05-04 08:57:25		2608043
47	Fedevych V.I. (labuch_fedev)	36	65	226	2020-04-06 22:22:48		2647558
48	Pusev D.V. (Pusev_Denis)	17	134	184	2020-03-21 10:55:32		2671285
49	Fokin A. (Vizitor )	43	52	263	2019-08-18 21:46:14		2981674
50	Bazavluk M. (DoNotLook)	96	9	141	2019-07-30 23:04:12		3008956
51	Romanov K.Yu. (kostik)	304	0	12	2019-07-25 08:42:10		3017018
52	Kordyum A. (alko58)	222	0	12	2019-07-12 15:58:52		3035301
53	Pavlov A.V. (Anton)	59	29	168	2019-06-12 01:20:21		3079380
54	Mal'tsev A.V. (Palkin)	111	8	218	2019-03-06 20:25:17		3219355
55	Kurochkin P.A. (qwrqwr)	11	211	227	2018-12-28 14:37:25		3317623
56	Grishunin M.F. (MikhailFG)	91	10	144	2018-12-26 09:36:27		3320804
57	Shindin A.V. (AlShin)	24	99	45	2018-09-18 15:45:28		3462995
58	Skorohod I. (Dracul4ik)	77	15	45	2018-08-07 14:38:23		3523542
59	Voevutskij S.A. (SergLK)	209	0	45	2018-07-01 13:19:14		3576901
60	Zyrin V.E. (Vezyr)	536	0	29	2018-05-29 14:14:19		3624366
61	Chebykin D. (GriGrim)	38	62	228	2018-03-26 15:47:45		3716433
62	Shkarednyj I.N. (Gosha)	35	66	151	2018-03-23 22:38:32		3720342
63	Boiko D. (Angellore)	8	233	229	2018-03-23 21:19:51		3720421
64	Azbel' E.G. (enull)	76	15	148	2018-03-08 04:10:21		3743050
65	Shkarednyj I.N. (Gosha)	35	66	147	2018-02-26 08:13:30		3757207
66	F (uff)	64	25	95	2018-01-22 15:57:03		3807143
67	Aliev R. (y4nzi)	26	95	259	2017-12-17 18:48:39		3858812
68	Kordyum A. (alko58)	222	0	101	2017-11-21 18:18:43		3896282
69	Zajtsev V.S. (Sleeping)	20	112	190	2017-11-20 12:57:31		3898043
70	Aliev R. (y4nzi)	26	95	257	2017-11-19 19:09:17		3899111
71	Aliev R. (y4nzi)	26	95	255	2017-10-24 14:34:21		3936826
72	Kukushkin S.A. (smog)	15	153	171	2017-10-05 18:37:27		3963943
73	Skorohod I. (Dracul4ik)	77	15	156	2017-09-12 19:34:33		3997006
74	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	115	2017-07-21 14:09:37		4073651
75	Bezhaev A.Yu. (Baser)	7	236	220	2017-06-19 06:24:54		4120195
76	Vorob'ev E.V. (Johnnymnemonic)	157	0	138	2017-06-16 09:15:49		4124345
77	F (uff)	64	25	185	2017-06-01 10:27:49		4145873
78	Skorohod I. (Dracul4ik)	77	15	146	2017-05-04 17:54:53		4185745
79	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4247637
80	Skorohod I. (Dracul4ik)	77	15	144	2016-10-10 15:20:14		4482540
81	Sysoev A.V. (Sysa)	49	39	165	2016-09-16 00:07:24		4518013
82	Sysoev A.V. (Sysa)	49	39	168	2016-07-22 23:44:07		4597236
83	Karasyova N.V. (vlksm)	9	225	263	2016-04-23 11:28:43		4727572
84	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		4769671
85	Sivoglazov M.A. (Gaizenberg)	65	24	127	2015-11-28 14:08:52		4939091
86	Maslyaev V.S. (Velmont)	89	11	170	2015-11-06 14:01:20		4970779
87	Sivoglazov M.A. (Gaizenberg)	65	24	261	2015-10-13 23:22:26		5004778
88	Fomichev A.V. (Fomichev)	194	0	101	2015-10-07 11:21:04		5014139
89	Grinkevich D.L. (Dmitrij Grinkevich)	22	109	188	2015-09-19 12:34:48		5039986
90	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5054289
91	Frolov (dr.shtopor)	80	14	141	2015-09-08 10:04:55		5055975
92	Varenikov D.M. (Dmitriy Varenikov)	18	125	263	2015-08-31 08:35:37		5067585
93	Chebykin D. (GriGrim)	38	62	263	2015-08-28 21:04:30		5071156
94	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5074487
95	Maslyaev V.S. (Velmont)	89	11	140	2015-07-27 05:27:50		5118173
96	Khromulyak O.M. (ChOleg)	120	5	150	2015-07-26 08:20:51		5119440
97	Chebykin D. (GriGrim)	38	62	216	2015-07-20 09:39:02		5128001
98	Halushka B. (halushka)	46	46	143	2015-07-13 15:28:55		5137731
99	Halushka B. (halushka)	46	46	204	2015-07-07 15:42:03		5146358
100	Skorohod I. (Dracul4ik)	77	15	256	2015-01-28 15:03:11		5376797

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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