Today's statistics at "SQL Exercises"

May 19, 11:46 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	Khakimova Ya.A. (yanixhaki)	2			5	5	12	15
2	Safronov P.A. (Paulus73)	2	1	107		2
3	DO R.M. (danchikPi)	1	1	25		2
4	olegpsh (oleg1909)	1			1	2	11	22
5	Zubov D.Z. (Dmitrij84)	4			1	2
6	Borschovetskij I.N. (Igor2.0)	1	1	15		1
7	Stepanov D.V. (dimkanehall)	1			1	1
8	Moroz A.I. (frostanast)	1					ban	ban
9	Eleusuzov H.B. (aweaseed)	1					15	24
10	Kotyalrov M.V. (GUSb)	1					13	23
11	Abbasov A.A. (azizabbasov)	1					ban	ban
12	Kuchkin I.V. (Keyblast)	2					12	20
13	Bezuglova M.G. (Mariya Bezuglova 2.6)	1					11	19
14	Sergienko K. (k.i.sergienko)	1					15	18
15	Dzyuba A.D. (artem5231)	1					10	18
16	Kim D.I. (kimxwq)	2					ban	ban
17	Lampieva P.S. (Lampieva Polina)	1					11	14
18	Nevazhno Z.P. (DRDRStepa)	1					11	14
19	Krasnoschekov (PavelPavelK)	1					ban	ban
20	el (elili)	1					6	12
21	Q (ala4ste)	2					ban	ban
22	Oliveira D.R. (Danilo101)	2					7	9
23	FEJODECASINE F.J. (Neto2026)	1					7	9
24	Zubkov D. (Dm54)	2					5	8
25	Popopo (ASergeev111)	1					4	8
26	Vasil'ev (GudiniMoonlight)	1					4	8
27	mannanov M.R. (Stra1D3)	2					6	7
28	Fedorov M.V. (femakc)	1					6	7
29	Matyuhanov D.A. (Lineagi4)	1					4	7
30	Vittman M. (DarkWatcher)	3					5	5
31	Voterk'yu (voterque1)	2					5	5
32	Lipin E. (Junior2222)	2					5	5
33	Tsakhilova T.K. (tamats)	1					5	5
34	Kirillova (yo_elv)	1					5	5
35	Ogaj A.K. (AO19)	1					5	5
36	Ivanova (molecule-_-)	3					3	5
37	Poselentseva D.Yu. (kurochka_kurlik)	1					3	5
38	Sivolozskii (kirill_szz)	1					3	5
39	Frolov V. (Lanovarian)	1					4	4
40	Ganiyev A. (lernanto)	1					3	4
41	Ivanov I.I. (sql_svinger_double_finger)	1					2	4
42	Komyakov Yu.V. (dreamersleet)	1					2	4
43	K S.B. (SvetA23.)	1					2	4
44	Zubrinkina A.S. (Anastasiya05-209)	1					2	4
45	Lago G.S. (neyDoSql10)	2					ban	ban
46	Oliveira J.L. (Jean Lucas)	1					2	3
47	Kairatov Y. (yernaty)	3					2	2
48	squirrel (squir_el)	1					2	2
49	K A.Yu. (Mad Harper)	1					ban	ban
50	Stepanov (LexFrom)	1					1	2
51	Zakharov (Ave_Asuka)	1					1	2
52	Novitskaya (Katinn)	1					ban	ban
53	Skorenko D.Yu. (sozdatell)	1					ban	ban
54	Popov (Kuningas)	1					1	2
55	Golovenko M. (gomotya)	2					1	1
56	Kovalenko P.S. (pskovalenko)	2					ban	ban
57	Kachkaev A. (alevaka)	1					1	1
58	Lysenko R.A. (Ruslan+)	1					1	1
59	Khomich D.L. (Tipelllo)	1					1	1
60	darak A. (OrganicJuice8)	1					1	1
61	Govorov S. (serggv)	1					1	1
62	Koptel'tsev V. (selber)	4
63	Krasnov M. (Max903)	3
64	Kurochkin P.A. (qwrqwr)	2
65	Batnasunov (Alatriste)	2					ban	ban
66	Marar A.S. (16_capybara_02)	2
67	Butnaru M.V. (775.nn)	2
68	Shevtsov K. (KonstantinXL)	2
69	Katashevskij (YaUstalPridumyvat'Nik)	2					ban	ban
70	Kirkilan A.E. (AionK)	2
71	santos A.C. (blackghost666)	2
72	Savitskij D.V. (Savacool2212)	2					ban	ban
73	Blokhin (Blokhin Aleksandr)	2
74	Sagunov N.S. (Ksywka)	2
75	Kish (Zhkish)	2
76	Krechetov D.V. (Rugby)	2
77	KLIMOVa (Amorrr)	2
78	Vyazovetskov A.S. (alex_v)	1
79	Yudin A.A. (AlexeusCrasher)	1
80	Shibaev (saah)	1
81	Nyachoto M. (Mancaps)	1
82	Grigorovich S.G. (Sergej Grrrr)	1
83	Sudlenkova N. (sudlik)	1
84	Anand R. (rosty)	1
85	Kiselev D.A. (jsabinaa)	1
86	Biktagirov R.I. (biktag1)	1
87	kochetov I. (ilyaali)	1
88	Osipenko M.O. (Nezhit)	1					ban	ban
89	Chibisov S. (ss_chibisov)	1
90	Alina (Meyhe)	1
91	Gemazudinov D.R. (DimonLemon)	1
92	vktory369 (vk1991)	1
93	Simonov V.A. (Vasilij84)	1
94	Strukov (StrukovSA)	1
95	Markova (Irena280880)	1
96	Sarkis'yan G. (gennadi_s)	1
97	Zheleznov (zhelezzyaka)	1
98	Popov D. (linklib.web)	1
99	Aniskovich E. (evgeniyaniskovich)	1
100	P I.*. (IrinaPetr)	1
101	Way B. (wayback)	1					ban	ban
102	R. (Wra1th)	1
103	Komov S.M. (Komov S. M.)	1
104	Zhandarov A. (Leshka_1322)	1
105	Gromov E. (JekaLegenda)	1
106	Volkov S.A. (Servol)	1
107	Shingireev M. (Mastaz)	1
108	Sten'kova V.S. (BarabashkaV)	1
109	Grechishnikova L.M. (Lidiya0512)	1
110	Peresetskaya S.A. (sssofi)	1
111	Tulaikin V. (tulaikinv)	1
112	Ponomarenko (Artem1337h4ck3r)	1
113	Bulgakov A.S. (temchik30)	1
114	Konovalov (JustUty1)	1
115	Lastochkina (0Mak0)	1
116	. (danya123456789)	1					ban	ban
117	Kast M. (MarkusKast)	1					ban	ban
118	Kast M. (MarkusKast228)	1					ban	ban
119	Markevich A.A. (Nastyayaya)	1					ban	ban
120	Degovtsov K.A. (brazilian.pdf)	1
121	Baboshina E.S. (lizoch_ka)	1
122	Kulikov A.Yu. (Ondrata)	1
123	Schegol' Yu. (JulyaSchegol)	1
124	- -.-. (Khlebushek2)	1
125	Duisenbayev (3UMF)	1
126	Morozov G.A. (Morozz2222)	1
127	Romanov (JerseyDevil)	1
128	Soboleva I.Yu. (Matreshka_)	1
129	Boudoux A. (ayran)	1
130	Venas M.P. (MatTzZ)	1
131	ana A.B. (eyeaaka)	1
132	menezes L.S. (Lz171)	1
133	Joao V.N. (victornerves)	1
134	Amorim A.M. (Xann1)	1
135	Souza E.M. (lk2003)	1
136	Mota E.S. (Eduardo Mota)	1
137	Souza B. (b1nho)	1
138	heat (rodrigo142)	1
139	lima R.C. (Rayanguitar01)	1
140	Oliveira L.A. (gutoladraodegalinha)	1
141	Biba N.V. (gipnogaba)	1
142	Voronova T. (Selena87)	1
143	V A.Kh. (Arslan9)	1
144	um G.P. (hjkn)	1
145	Ryzhkova S.A. (callmelanaplease)	1
146	Frolov A. (afrolov05)	1
147	Shiryaeva V.O. (vikashiriaeva)	1
148	Ryasnoy A.A. (Andrey186)	1
149	S (n1pron)	1
150	Voroshilova (Loser_Bruno)	1
151	Sobolev N.A. (NickolaySobolev)	1
152	Pisklov I.S. (Goti)	1
153	Orazbaeva A.D. (Darkhan Aray)	1
154	Mustafina A. (alestafina)	1
155	Mi (Valentisiami)	1
156	Salyakhova A. (albina007)	1
157	Phit T. (lokk2002)	1
158	Kubasu I.S. (Kubasu)	1
159	Norkova E. (enorkovaa)	1
160	Unregistered	19

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References