Recent leaders activity at "SQL Exercises"

SQL exercises

July 16, 19:35 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: 15146

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Timofeeva E.V. (Umrikhina)	26	96	24	2026-07-15 10:55:13	2026-07-15 11:24:36	29
2	Safronov P.A. (Paulus73)	134	0	137	2026-07-13 10:19:08	2026-07-14 00:12:15	833
3	Koptel'tsev V. (selber)	19	130	198	2026-07-12 02:54:38		6761
4	Safronov P.A. (Paulus73)	134	0	136	2026-07-10 10:15:27	2026-07-10 15:00:38	285
5	Safronov P.A. (Paulus73)	134	0	135	2026-07-09 10:47:01	2026-07-10 00:27:56	821
6	Safronov P.A. (Paulus73)	134	0	134	2026-07-08 10:21:00	2026-07-08 15:48:42	328
7	Safronov P.A. (Paulus73)	134	0	133	2026-07-07 10:28:03	2026-07-07 11:59:53	92
8	Koptel'tsev V. (selber)	19	130	241	2026-05-23 20:23:43	2026-07-07 07:38:38	64035
9	Safronov P.A. (Paulus73)	134	0	132	2026-07-06 11:09:01	2026-07-06 18:52:03	463
10	Safronov P.A. (Paulus73)	134	0	131	2026-07-03 10:10:01	2026-07-03 11:05:45	56
11	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		43257
12	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		77686
13	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		98291
14	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		111351
15	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		121579
16	Vyazovetskov A.S. (alex_v)	7	241	264	2026-04-22 19:15:17		122420
17	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		153132
18	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		246360
19	Lukov D.R. (Gendalf)	246	0	32	2025-12-05 01:36:21		322199
20	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		533903
21	Filippkin D.V. (_dimon_)	3	259	263	2025-02-19 11:18:04		737778
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		768026
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		780214
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		928067
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		929375
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		952126
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1061664
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1173729
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1173729
30	Williams B. (BW)	35	66	141	2024-04-02 11:30:28		1202885
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1229406
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1243038
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1309080
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1312394
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1314784
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1347449
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1399711
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1424288
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1740865
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1844854
41	Koptel'tsev V. (selber)	19	130	237	2022-11-06 21:16:51		1941019
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		1980227
43	Lukov D.R. (Gendalf)	246	0	90	2022-07-21 11:18:50		2097137
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2243718
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2495475
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2623827
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2758181
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2800367
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2804115
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3046181
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3113544
52	Koptel'tsev V. (selber)	19	130	259	2020-06-24 00:22:07		3187874
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3252828
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3260798
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3300313
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3324040
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3634430
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3661712
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3669774
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3688057
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3732135
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3872110
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		3970378
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		3973559
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4115750
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4176297
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4229657
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4277121
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4369188
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4373097
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4373176
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4395805
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4409962
74	F (uff)	65	25	95	2018-01-22 15:57:03		4459899
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4511567
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4549037
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4550798
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4551866
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4589581
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4616698
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4649761
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4726406
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4772951
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4777100
85	F (uff)	65	25	185	2017-06-01 10:27:49		4798628
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4838501
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4900392
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5135296
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5170768
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5249992
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5380327
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5422426
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5591847
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5623534
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5657533
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5666895
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5692741
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5707045
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5708731
100	Varenikov D.M. (Dmitriy Varenikov)	20	129	263	2015-08-31 08:35:37		5720340

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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