Recent leaders activity at "SQL Exercises"

SQL exercises

September 24, 02:17 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: 13864

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Koptel'tsev V. (selber)	19	133	53	2026-09-20 05:35:11	2026-09-23 22:59:05	5364
2	Sigankov V.I. (vasilyvanc)	33	74	53	2026-09-23 14:18:31		719
3	Sarkis'yan G. (gennadi_s)	14	187	53	2026-09-18 17:50:12	2026-09-19 18:45:38	1495
4	Krasovskij E.A. (pegoopik)	1	266	53	2026-09-18 15:39:39	2026-09-18 15:39:44	0
5	Krasovskij E.A. (pegoopik)	1	266	303	2026-09-11 20:13:12	2026-09-11 20:13:42	1
6	Vinogradova S.M. (Tigra1)	148	0	138	2026-09-06 14:09:20	2026-09-11 10:52:12	7003
7	Koptel'tsev V. (selber)	19	133	183	2026-09-07 08:11:06		24126
8	Komarov A.N. (Shveda Saulya)	35	68	165	2026-08-28 13:41:52		38196
9	Koptel'tsev V. (selber)	19	133	188	2026-08-21 06:33:00		48704
10	Williams B. (BW)	36	67	252	2026-07-31 13:33:49		78524
11	Williams B. (BW)	36	67	264	2026-07-29 13:21:27		81416
12	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		90124
13	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		92892
14	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		143018
15	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		177448
16	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		211112
17	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		221340
18	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		222182
19	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		252894
20	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		346121
21	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		421961
22	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		633664
23	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		867787
24	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		879976
25	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		1027829
26	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		1029137
27	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		1051887
28	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1161426
29	Slavutinskij V.V. (Vasilko)	456	0	5	2024-04-22 17:26:35		1273491
30	Slavutinskij V.V. (Vasilko)	456	0	7	2024-04-22 17:26:21		1273491
31	Williams B. (BW)	36	67	141	2024-04-02 11:30:28		1302647
32	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1329168
33	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1342800
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1408842
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1412156
36	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1414545
37	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1447210
38	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1499473
39	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1524050
40	Shkarednyj I.N. (Gosha)	37	66	198	2023-03-25 21:10:27		1840627
41	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1944616
42	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		2040781
43	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2079989
44	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2196899
45	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2343480
46	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2595236
47	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2723588
48	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2857942
49	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2900129
50	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2903876
51	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3145942
52	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3213305
53	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3287635
54	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3352589
55	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3360560
56	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3400075
57	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3423802
58	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3734191
59	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3761473
60	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3769535
61	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3787819
62	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3831897
63	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3971872
64	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4070140
65	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4073321
66	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4215512
67	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4276059
68	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4329418
69	Zyrin V.E. (Vezyr)	553	0	29	2018-05-29 14:14:19		4376883
70	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4468950
71	Shkarednyj I.N. (Gosha)	37	66	151	2018-03-23 22:38:32		4472859
72	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4472938
73	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4495567
74	Shkarednyj I.N. (Gosha)	37	66	147	2018-02-26 08:13:30		4509724
75	F (uff)	65	25	95	2018-01-22 15:57:03		4559660
76	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4611329
77	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4648799
78	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4650560
79	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4651628
80	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4689343
81	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4716460
82	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4749523
83	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4826168
84	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4872713
85	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4876862
86	F (uff)	65	25	185	2017-06-01 10:27:49		4898390
87	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4938263
88	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		5000154
89	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5235057
90	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5270530
91	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5349753
92	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5480089
93	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5522188
94	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5691609
95	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5723296
96	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5757295
97	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5766656
98	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5792503
99	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5806807
100	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5808492

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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