Recent leaders activity at "SQL Exercises"

SQL exercises

August 14, 17:50 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: 15149

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	180	205	2026-08-07 13:45:21	2026-08-10 17:09:13	4524
2	Sarkis'yan G. (gennadi_s)	15	180	204	2026-08-04 12:34:26	2026-08-04 13:41:32	67
3	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		20417
4	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		23309
5	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		32017
6	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		34785
7	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		84911
8	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		119341
9	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		139946
10	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		153005
11	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		163233
12	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		164075
13	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		194787
14	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		288014
15	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		363854
16	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		575557
17	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		809680
18	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		821869
19	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		969722
20	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		971030
21	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		993780
22	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1103319
23	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1215384
24	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1215384
25	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1244540
26	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1271061
27	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1284693
28	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1350735
29	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1354049
30	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1356438
31	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1389103
32	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1441366
33	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1465942
34	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1782520
35	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1886509
36	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1982674
37	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2021882
38	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2138792
39	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2285373
40	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2537129
41	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2665481
42	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2799835
43	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2842022
44	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2845769
45	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3087835
46	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3155198
47	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3229528
48	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3294482
49	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3302453
50	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3341968
51	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3365695
52	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3676084
53	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3703366
54	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3711428
55	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3729712
56	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3773790
57	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3913765
58	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4012033
59	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4015214
60	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4157405
61	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4217952
62	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4271311
63	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4318776
64	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4410843
65	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4414752
66	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4414831
67	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4437460
68	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4451617
69	F (uff)	65	25	95	2018-01-22 15:57:03		4501553
70	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4553222
71	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4590692
72	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4592453
73	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4593521
74	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4631236
75	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4658353
76	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4691416
77	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4768061
78	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4814605
79	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4818755
80	F (uff)	65	25	185	2017-06-01 10:27:49		4840283
81	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4880156
82	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4942047
83	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5176950
84	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5212423
85	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5291646
86	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5421982
87	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5464081
88	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5633502
89	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5665189
90	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5699188
91	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5708549
92	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5734396
93	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5748700
94	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5750385
95	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5761995
96	Chebykin D. (GriGrim)	39	62	263	2015-08-28 21:04:30		5765566
97	Halushka B. (halushka)	46	46	211	2015-08-26 13:33:28		5768897
98	Maslyaev V.S. (Velmont)	91	11	140	2015-07-27 05:27:50		5812583
99	Khromulyak O.M. (ChOleg)	121	5	150	2015-07-26 08:20:51		5813850
100	Chebykin D. (GriGrim)	39	62	216	2015-07-20 09:39:02		5822411

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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