Recent leaders activity at "SQL Exercises"

SQL exercises

August 10, 00:33 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: 15142

No	Person	Rating	3rd score	Ex	Start	Finish	S_time (min)
1	Sarkis'yan G. (gennadi_s)	15	178	205	2026-08-07 13:45:21		3528
2	Sarkis'yan G. (gennadi_s)	15	178	204	2026-08-04 12:34:26	2026-08-04 13:41:32	67
3	Koptel'tsev V. (selber)	19	133	198	2026-07-12 02:54:38	2026-07-31 20:31:37	28417
4	Williams B. (BW)	35	67	252	2026-07-31 13:33:49		13620
5	Williams B. (BW)	35	67	236	2026-07-29 13:21:56	2026-07-31 13:32:08	2890
6	Vyazovetskov A.S. (alex_v)	6	245	181	2026-07-29 14:43:59	2026-07-30 18:38:40	1675
7	Williams B. (BW)	35	67	264	2026-07-29 13:21:27		16512
8	Williams B. (BW)	35	67	308	2026-07-23 14:59:30	2026-07-29 13:19:06	8540
9	Sarkis'yan G. (gennadi_s)	15	178	203	2026-07-28 14:11:50	2026-07-28 15:38:56	87
10	Sigankov V.I. (vasilyvanc)	33	74	216	2026-07-23 12:13:08		25221
11	Sigankov V.I. (vasilyvanc)	33	74	241	2026-07-21 14:05:13		27989
12	Zajtsev V.S. (Sleeping)	22	118	241	2026-06-16 18:38:55		78115
13	Chernov D.V. (Kursist)	2	262	241	2026-05-23 20:49:50		112544
14	Komarov A.N. (Shveda Saulya)	37	65	160	2026-05-09 13:24:21		133149
15	Polyakov V.M. (rock_4)	76	15	173	2026-04-30 11:45:12		146209
16	Polyakov V.M. (rock_4)	76	15	164	2026-04-23 09:17:13		156437
17	Vyazovetskov A.S. (alex_v)	6	245	264	2026-04-22 19:15:17		157279
18	Polyakov V.M. (rock_4)	76	15	148	2026-04-01 11:23:28		187990
19	Petrov Y. (YuriPetrov)	32	78	210	2026-01-26 17:36:12		281218
20	Lukov D.R. (Gendalf)	247	0	32	2025-12-05 01:36:21		357057
21	Chebykin D. (GriGrim)	39	62	210	2025-07-11 01:12:59		568761
22	Chuvstvin M. (chuvstvinmaxim)	89	11	141	2025-01-29 11:09:56		802884
23	Chuvstvin M. (chuvstvinmaxim)	89	11	258	2025-01-21 00:01:28		815072
24	Lyubomudrov R.G. (born2tilt)	71	22	162	2024-10-10 07:48:40		962925
25	Lyubomudrov R.G. (born2tilt)	71	22	202	2024-10-09 10:00:37		964233
26	Frolov K.A. (Murderface_)	135	0	138	2024-09-23 14:49:59		986984
27	Zajtsev V.S. (Sleeping)	22	118	164	2024-07-09 13:11:22		1096522
28	Slavutinskij V.V. (Vasilko)	455	0	5	2024-04-22 17:26:35		1208587
29	Slavutinskij V.V. (Vasilko)	455	0	7	2024-04-22 17:26:21		1208587
30	Williams B. (BW)	35	67	141	2024-04-02 11:30:28		1237743
31	Kukushkin S.A. (smog)	16	153	194	2024-03-15 01:29:39		1264264
32	Latyntsev N.G. (aks_nsk)	54	37	253	2024-03-05 14:17:51		1277896
33	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	305	2024-01-19 17:35:31		1343938
34	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	306	2024-01-17 10:21:39		1347252
35	Kurbanoff N.I. (Nariman Kurbanoff)	100	9	71	2024-01-15 18:32:03		1349642
36	Nikolaenko A.V. (Shadow77)	84	14	135	2023-12-24 02:07:10		1382307
37	Boiko D. (Angellore)	9	233	262	2023-11-17 19:04:36		1434569
38	Rudikov E. (cubie)	136	0	138	2023-10-31 17:27:54		1459146
39	Shkarednyj I.N. (Gosha)	36	66	198	2023-03-25 21:10:27		1775723
40	Latyntsev N.G. (aks_nsk)	54	37	255	2023-01-12 16:01:39		1879712
41	Koptel'tsev V. (selber)	19	133	237	2022-11-06 21:16:51		1975877
42	Borisenkov D.V. (xuser)	99	9	173	2022-10-10 15:48:20		2015085
43	Lukov D.R. (Gendalf)	247	0	90	2022-07-21 11:18:50		2131995
44	Pavlov A.V. (Anton)	60	29	141	2022-04-10 16:17:39		2278576
45	Sigankov V.I. (vasilyvanc)	33	74	161	2021-10-17 20:21:01		2530333
46	Fedevych V.I. (labuch_fedev)	38	65	221	2021-07-20 17:09:05		2658685
47	Pusev D.V. (Pusev_Denis)	18	134	234	2021-04-18 09:55:08		2793039
48	Kukushkin S.A. (smog)	16	153	12	2021-03-20 02:48:36		2835225
49	Pusev D.V. (Pusev_Denis)	18	134	159	2021-03-17 12:21:10		2838973
50	Kozharinov A. (bubala)	213	0	10	2020-09-30 09:55:07		3081039
51	Samarin A. (not.yet.sql.master)	147	0	112	2020-08-14 15:12:10		3148402
52	Koptel'tsev V. (selber)	19	133	259	2020-06-24 00:22:07		3222732
53	Samarin A. (not.yet.sql.master)	147	0	138	2020-05-09 21:48:04		3287686
54	Karasyova N.V. (vlksm)	10	225	230	2020-05-04 08:57:25		3295656
55	Fedevych V.I. (labuch_fedev)	38	65	226	2020-04-06 22:22:48		3335171
56	Pusev D.V. (Pusev_Denis)	18	134	184	2020-03-21 10:55:32		3358898
57	Fokin A. (Vizitor )	44	52	263	2019-08-18 21:46:14		3669288
58	Bazavluk M. (DoNotLook)	97	9	141	2019-07-30 23:04:12		3696570
59	Romanov K.Yu. (kostik)	312	0	12	2019-07-25 08:42:10		3704632
60	Kordyum A. (alko58)	231	0	12	2019-07-12 15:58:52		3722915
61	Pavlov A.V. (Anton)	60	29	168	2019-06-12 01:20:21		3766993
62	Mal'tsev A.V. (Palkin)	112	8	218	2019-03-06 20:25:17		3906969
63	Kurochkin P.A. (qwrqwr)	12	211	227	2018-12-28 14:37:25		4005236
64	Grishunin M.F. (MikhailFG)	93	10	144	2018-12-26 09:36:27		4008417
65	Shindin A.V. (AlShin)	25	99	45	2018-09-18 15:45:28		4150608
66	Skorohod I. (Dracul4ik)	79	15	45	2018-08-07 14:38:23		4211155
67	Voevutskij S.A. (SergLK)	219	0	45	2018-07-01 13:19:14		4264515
68	Zyrin V.E. (Vezyr)	552	0	29	2018-05-29 14:14:19		4311979
69	Chebykin D. (GriGrim)	39	62	228	2018-03-26 15:47:45		4404046
70	Shkarednyj I.N. (Gosha)	36	66	151	2018-03-23 22:38:32		4407955
71	Boiko D. (Angellore)	9	233	229	2018-03-23 21:19:51		4408034
72	Azbel' E.G. (enull)	78	15	148	2018-03-08 04:10:21		4430663
73	Shkarednyj I.N. (Gosha)	36	66	147	2018-02-26 08:13:30		4444820
74	F (uff)	65	25	95	2018-01-22 15:57:03		4494757
75	Aliev R. (y4nzi)	27	95	259	2017-12-17 18:48:39		4546425
76	Kordyum A. (alko58)	231	0	101	2017-11-21 18:18:43		4583895
77	Zajtsev V.S. (Sleeping)	22	118	190	2017-11-20 12:57:31		4585656
78	Aliev R. (y4nzi)	27	95	257	2017-11-19 19:09:17		4586725
79	Aliev R. (y4nzi)	27	95	255	2017-10-24 14:34:21		4624439
80	Kukushkin S.A. (smog)	16	153	171	2017-10-05 18:37:27		4651556
81	Skorohod I. (Dracul4ik)	79	15	156	2017-09-12 19:34:33		4684619
82	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	115	2017-07-21 14:09:37		4761264
83	Bezhaev A.Yu. (Baser)	8	236	220	2017-06-19 06:24:54		4807809
84	Vorob'ev E.V. (Johnnymnemonic)	165	0	138	2017-06-16 09:15:49		4811958
85	F (uff)	65	25	185	2017-06-01 10:27:49		4833486
86	Skorohod I. (Dracul4ik)	79	15	146	2017-05-04 17:54:53		4873359
87	Movlyanov A.P. (Oct)	13	193	218	2017-03-22 18:23:50		4935250
88	Skorohod I. (Dracul4ik)	79	15	144	2016-10-10 15:20:14		5170154
89	Sysoev A.V. (Sysa)	50	39	165	2016-09-16 00:07:24		5205626
90	Sysoev A.V. (Sysa)	50	39	168	2016-07-22 23:44:07		5284850
91	Karasyova N.V. (vlksm)	10	225	263	2016-04-23 11:28:43		5415185
92	Titovskij P.S. (kli3ma)	47	45	164	2016-03-25 05:49:30		5457284
93	Sivoglazov M.A. (Gaizenberg)	66	24	127	2015-11-28 14:08:52		5626705
94	Maslyaev V.S. (Velmont)	91	11	170	2015-11-06 14:01:20		5658392
95	Sivoglazov M.A. (Gaizenberg)	66	24	261	2015-10-13 23:22:26		5692391
96	Fomichev A.V. (Fomichev)	200	0	101	2015-10-07 11:21:04		5701753
97	Grinkevich D.L. (Dmitrij Grinkevich)	23	109	188	2015-09-19 12:34:48		5727599
98	Movlyanov A.P. (Oct)	13	193	194	2015-09-09 14:10:52		5741903
99	Frolov (dr.shtopor)	82	14	141	2015-09-08 10:04:55		5743589
100	Varenikov D.M. (Dmitriy Varenikov)	20	130	263	2015-08-31 08:35:37		5755198

Home
Week news

Certification

SQL exercises

HELP

Performance

Profile
References

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