Today's statistics at "SQL Exercises"

May 05, 12:19 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.

Ratings

  • 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

Statistics

  • 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)

Forums

  • Learning stage
  • Rating stages
  • Favorites
  • Search
  • Blogs

Certification

  • About certification
  • Certified professionals
  • Statistics
  • Statistics over regions (map)
  • Confirm certificate

HELP

Query optimization

For employers

Support SQL-EX.RU

Today statistics

nLog - number of logins;
nSelEx - number of select exercises solved today;
lastEx - number of last select exercise solved;
nDmlEx - number of dml exercises solved today;
Scores - sum of points on the exercises solved today (select and dml);
numLrnEx, LrnScores - number of exercises solved today and sum of points on learning stage

No	Surname	nLog	nSelEx	lastEx	nDmlEx	Scores	numLrnEx	LrnScores
1	Ab R. (rrXX)	1	5	2		6	ban	ban
2	Nesov (80STH)	1	2	32		4
3	Safronov P.A. (Paulus73)	1	1	99		3
4	Kapitanova A.O. (Kapitanova)	2			3	3	12	15
5	Shafigullina D. (Dineira)	1			3	3
6	ASI (asi_sql)	4	1	24		2
7	Mikov A.O. (xxxp)	1					15	26
8	Radzhabov R.S. (Remma)	1					15	25
9	Lutskina E.V. (Lina-eva)	2					15	24
10	Shehonina (arina_shehonina)	1					15	24
11	Ochagov E.E. (uwu2017)	2					14	23
12	Rozhnov I.G. (IvanRozhnov)	1					14	23
13	Abbasov A.A. (azizabbasov)	1					13	22
14	Solov'ev D.I. (popkinpipkin)	2					15	18
15	Zaidi I. (IFRA)	1					15	18
16	Ivanova O. (juroni)	1					13	16
17	Koroleva A.P. (KorolevaAP)	2					12	15
18	Kazitskij D.S. (psaewd)	1					12	15
19	Savushkina E. (aveslahaha)	1					12	14
20	KhKhKh (dpkkk)	1					11	14
21	Babu E. (Eldhoo)	1					11	14
22	Boby H. (HarithaBoby)	1					11	14
23	Benny B. (Beno_Benny)	1					11	14
24	Lymar' K.K. (Kirill L (TsI))	1					11	14
25	aitbaeva M.K. (merekease)	1					11	14
26	Umbetova N.S. (nurdanka)	1					9	13
27	Taraskin A.P. (taranttt)	1					8	13
28	Gamynin N.V. (ngamynin)	1					9	12
29	kkkzzzsvo K.K. (kkkzzzsvo1)	1					9	12
30	Vasilyov A.A. (quiry)	1					7	12
31	Shershen' Ya. (kokos12467)	1					8	11
32	Akimtsev M.A. (AkimtsevMaks)	1					6	11
33	boris.isma (boris.4240)	1					6	10
34	Secret Key (Secret Key)	1					6	10
35	Gor (kristi16109091)	1					8	9
36	Malyukin K.A. (Stepan228)	1					8	9
37	enriquegiottonini E.G. (egiotto)	2					7	9
38	ozzlik O.O. (ozzlikOz)	1					7	9
39	Moroz A.I. (frostanast)	1					5	9
40	Novikova (novikovadasha)	2					5	8
41	Zhuravlev D. (Zhuravlev_dyu)	2					5	8
42	Biba N.V. (gipnogaba)	2					4	6
43	Ovchinnikov R. (Ovchinnikov Roman)	1					3	6
44	Drkv I. (AsDei)	1					3	6
45	qwerty (wqewrt)	1					5	5
46	Anisimov E.A. (egor_anisimov)	2					4	5
47	GG (Chamomilla)	1					4	5
48	Marchello K.G. (audi100c3)	1					ban	ban
49	Dovganyuk M. (KhlOpushka Lyubyatovo)	1					4	4
50	Fokin (fourty)	1					ban	ban
51	Agafonov P. (Lids17)	2					2	4
52	Iskhaev E. (Elisey6543211)	1					2	4
53	Alekseev A.S. (Andser)	1					2	4
54	Scherbakov D.S. (Scherbakov Dmitrij)	1					2	4
55	Vasil'ev (GudiniMoonlight)	1					2	4
56	Berekenov D.I. (DaniilB99)	2					3	3
57	Ryzhenkov A.S. (Andreu_grey)	1					3	3
58	Fedoseev A. (woodkid)	3					2	3
59	Beketov (becat)	1					2	2
60	Shibaev (saah)	1					1	2
61	Ch (ilywkaa)	1					1	2
62	Komyakov Yu.V. (dreamersleet)	1					1	2
63	Khisamov A. (ArchieSomethin)	1					1	2
64	Belleezee M.I. (Mikhaell)	1					1	1
65	Khomich D.L. (Tipelllo)	1					1	1
66	Sharapa A.V (LX26)	1					1	1
67	Terent'eva P.N. (Polina999nikol)	1					1	1
68	Kudr (Kudr_el)	1					1	1
69	Sviridov (witne7s)	1					1	1
70	Yuzbashev E.R. (Emyu)	1					1	1
71	Koptel'tsev V. (selber)	6
72	Krasovskij E.A. (pegoopik)	2
73	Kornienko A. (andr-123)	2
74	Komarov A.N. (Shveda Saulya)	2
75	Bogachev A.I. (balex_044)	2
76	petrov G. (G1alga_06)	2
77	Gorokhov (Krasauvicza)	2					ban	ban
78	Kornilov A.S. (Pipkinpopkin)	2
79	Zap M. (MarinaZap)	2
80	Varenikov D.M. (Dmitriy Varenikov)	1
81	Kurochkin P.A. (qwrqwr)	1
82	Utrobin (GENE1)	1
83	Allayarova (aalba)	1
84	Morozova I. (IMorozova)	1
85	Platonova Yu.V. (kyv)	1
86	Gudkov K.S. (CSKir)	1
87	Shipilov A.A. (sansanysh)	1
88	Shatunov (Tapac174)	1
89	Shestakov (Randomize)	1
90	Danyushin M. (GonLimon)	1
91	Artemenkov P. (39525D)	1
92	Kerrik (Zayne Carrick)	1
93	Orlov A. (esterio)	1
94	Tsay S. (Sergey Ts.)	1
95	Frantovskaya (dfrant)	1
96	Aleksashina N. (hungry_hamster)	1					ban	ban
97	Erzhan B.B. (YerzhanBux)	1
98	Yakshin I.V. (ivan_y)	1
99	Bondarchuk I. (Igor' Bondarchuk)	1
100	Xaydarov S.S. (rolevel01)	1
101	Nikitina D.V. (dasandree)	1
102	Sysueva A.D. (Sackamacki)	1
103	vktory369 (vk1991)	1
104	F M. (marie_f)	1
105	Sarkis'yan G. (gennadi_s)	1
106	SQLov (SQLov)	1
107	Noskin (CptBubbles)	1
108	Revenko M.A. (CptDisturbed)	1
109	Peev V.A. (vasili_peev)	1
110	Markelov (PavelME)	1
111	Kaban H. (Kaban123)	1
112	P I.*. (IrinaPetr)	1
113	R. (Wra1th)	1
114	Bidnenko K.E. (chef777)	1
115	Stepanov (LexFrom)	1
116	Andriyanova D.A. (andarinka)	1
117	Komov S.M. (Komov S. M.)	1
118	Zak (Bnn1)	1
119	Skibin V.V. (SQL_vvs)	1
120	Kolesnikov S.O. (bulbasaurus)	1
121	Hydyrova T... (Hydyrova)	1
122	Smol'nikov F.A. (_smolnikov_)	1
123	Buraevskaya A.O. (Alexandra Buraevskaya)	1
124	Semenova L. (lsmnv)	1
125	Rogachev L. (leonid19101110)	1
126	Pogorel'tsev D.P. (PashaDmitrii)	1
127	Vyatkin A.N. (viatkin)	1
128	Vlad V.V. (Bleckeid)	1
129	Kolenko S.S. (Denitsa)	1
130	D V. (DlytexKtoPoidetSledom)	1
131	Utkin S.A. (Aethel)	1
132	Lastochkina (0Mak0)	1
133	Soryu A.L. (RemiliaScarlet3)	1
134	Kanajkin N.P. (NikolayMordvin)	1
135	Pavlinov D. (danil_panamera)	1
136	Hutchinson L. (Luther_Hutchinson)	1
137	Murzabekov M.Kh. (Magich)	1
138	Budilova A.S. (Abud)	1
139	Ust'yanova (Sharki4)	1
140	Kim D.I. (kimxwq)	1
141	Serdyuchenko E.Yu. (eserdyuchenko)	1					ban	ban
142	Duisenbayev (3UMF)	1
143	Kuzmanovska (Maja_QA)	1
144	Bocharova V.E. (Malvisa)	1
145	Bannikova V.S. (ValeriaB)	1
146	Milyaeva K. (MadamSengo)	1
147	Martini T. (tumblu)	1
148	Snorenkova (anna_sn)	1
149	Nikonov S.A. (serg0123456789)	1
150	Kulmanova (Aikesha)	1					ban	ban
151	Kalinin L.A. (levk9594)	1
152	Zhargalov M.Zh. (zharmas)	1
153	Peremitin (doka804)	1
154	jsda J.J. (micky00000)	1
155	Buslovich E.G. (Omega0987)	1
156	Sajfutdinov V.R. (Viswald)	1
157	Savel'ev (longerthe)	1
158	Tolstoguzov E.S. (EgorGUZ)	1
159	X (AS87)	1
160	Yuzupov N.D. (5433434)	1
161	Mel'nikov A.I. (050036Almaty)	1
162	Unregistered	23

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References