Today's statistics at "SQL Exercises"

June 24, 18:29 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	Kornienko (Ivan Kornienko)	1			5	6
2	fioletovaya (fioletovaya2)	1	1	116		5
3	Williams B. (BW)	8	1	262		2
4	Shibaev (saah)	2	1	20		2
5	Kharitonov N. (RogueLikeLHR)	1					15	26
6	ZH K. (KOKS1996)	1					15	21
7	nex (Nexkex)	1					14	21
8	Bobosvin (Bobosvin1)	2					15	20
9	Hophey (Hophey)	3					15	18
10	qwerty (Sakaturro)	3					15	18
11	Karaulov (vlad0707)	1					14	18
12	Bezhnar A.I. (artikius)	1					9	15
13	Kutlumbetov V.V. (vkutlumbetov13)	1					8	14
14	Zazhigalkin (kzazhigalkin)	1					10	13
15	Istomin A.E. (iShurik)	1					10	13
16	Saperov S.V. (s4per)	1					9	12
17	Kryukova Yu. (July_1201)	1					9	11
18	L A.S. (antonio01110011)	1					9	11
19	Akhmetova Yu.M. (qwertyjhbjhb)	1					9	11
20	Fedotov A. (Amaterasu111111)	2					8	11
21	Molokanov (kotulya)	1					8	11
22	Shpak (vaster666)	1					7	11
23	Mishra (Ginger457)	1					6	11
24	gtclkmck J.E. (dklcokeco)	1					9	10
25	Osipov M.N. (Maksim22)	2					8	10
26	Scherbakov (chYwarY)	1					6	10
27	Panov A.A. (AAPanov)	1					8	9
28	Umrshatyan H. (Har27)	2					7	9
29	Anisimova A.V. (alinkka67)	1					7	9
30	Shevchenko G.M. (psychokitty01)	1					7	9
31	Leonidouse (LeonidouseT)	2					6	9
32	Studenikin N.I. (Stdnkn)	1					5	8
33	Lustina Yu.I. (YuliyaLy)	2					6	7
34	Ermolaev R.G. (CryEngi)	1					6	7
35	Dyushembiev A.M. (Dexiv)	1					6	7
36	Kolesnikova A. (pupupu11)	1					6	7
37	Aksenov D.A. (ak5eda)	1					4	7
38	Petrov A.I. (Tobo-bobo)	2					4	6
39	Nusipov D.E. (pingvinittos)	1					4	6
40	Sal'manov O.P. (3303)	1					4	6
41	Tret'yakov A. (Tolyas88)	3					3	6
42	Pushkarev S. (PSV_n)	1					3	6
43	Terekh V. (m3ntor)	1					5	5
44	Vasin V.V. (BakaJan2345)	1					5	5
45	Sukhov K.A. (ska_126)	1					5	5
46	Prozukina N. (13Sova13)	1					5	5
47	Bondarenko E. (ad_Astra)	2					ban	ban
48	Shalabaev R. (wiki_rus)	2					4	5
49	Mal'kov G.V. (Grigor1i)	1					4	4
50	Gantulga (Danna_g7)	3					3	4
51	Kravchuk O.T. (Popori)	2					ban	ban
52	Pedur (gitaristdaone)	2					3	4
53	Ivanov V. (vityansk)	1					3	4
54	Kyroto1 A. (Kyroto)	2					2	4
55	dubrovina (mrctrla)	1					2	4
56	Petesheva (Yung Satan)	1					2	4
57	Davydov S.M. (Dexx)	1					2	4
58	Khakimov B.S. (0511)	1					2	4
59	Pahadayeu A. (AndOffline)	1					2	4
60	Shashok (hallucination)	1					2	4
61	Babayan A. (Artur.4443)	1					2	4
62	Krylov P.E. (Pavel333333)	2					3	3
63	Turuzbekova A.M. (Aylin120699)	1					3	3
64	Sverdlov (Saxo_Grammaticus)	1					3	3
65	Anesyan A.A. (Ara23)	2					2	3
66	Zhukov N. (sariya_)	1					2	3
67	Yana Y.Y. (KeiYana)	1					ban	ban
68	E (neri)	1					2	3
69	G G.G. (grishagg)	1					2	3
70	Ivanov N. (nick8998)	1					2	3
71	Travkin A.A. (minon)	1					2	3
72	Fisenko P.V. (fisenkopv)	1					ban	ban
73	Berdnikov P. (stllife1)	1					2	2
74	Shin (ES1989)	1					2	2
75	Anan'eva V. (v.valerievna)	1					2	2
76	Semenov A. (antsmionov)	1					2	2
77	Lom A.V. (andy405)	1					1	2
78	Kudaibergenova (Aizhan_nur)	1					ban	ban
79	Vodolazova A.V. (Vodolla)	1					1	2
80	Vyaz'mitin (Wwwowa14)	1					1	2
81	Bitsoev E.T. (Bisotti Eduard)	1					1	2
82	Markelova (Gun'ka)	1					1	2
83	Artsyshevskaya I. (esc_del)	1					1	2
84	Berezovskaya D.V. (dashaeverafter)	1					1	2
85	Romanov E.D. (megakiller221105)	1					1	2
86	Golubova N. (NSQL)	1					1	2
87	Dev109 (Dev109)	1					1	2
88	Il'in I.N. (Igor_Il)	1					1	2
89	Pagin D.F. (paginxd)	1					1	2
90	Komissarova E.A. (guccigova)	1					1	2
91	Averianov L.A. (levio_))	3					1	1
92	Ko (123kont)	2					1	1
93	Samovarov P.M. (Petya_Samovar)	1					1	1
94	QWEQWE Q.Q. (GATS322)	1					1	1
95	Obukhov A.V. (Alex_71)	1					1	1
96	Stonis S.O. (Sergjik23t)	1					1	1
97	Alekseevich A. (Aleksei.P)	1					1	1
98	Shamakov (Work_work)	1					1	1
99	Iva E.A. (PlatinumKub10)	1					1	1
100	Daron (Daron_g)	1					1	1
101	Soroka (Niksa7)	1					1	1
102	Lymar' K.K. (Kirill L (TsI))	4					ban	ban
103	Koptel'tsev V. (selber)	3
104	DJ (SqlBoy17)	3
105	Sarkis'yan G. (gennadi_s)	3
106	Danyushin M. (GonLimon)	2
107	Polikarpov D.V. (meowthezy)	2					ban	ban
108	Denisenko E.S. (Denchiklenchik)	2
109	Zhmyshenko (notepu1)	2
110	P I.*. (IrinaPetr)	2
111	Komov S.M. (Komov S. M.)	2
112	Odnokurtsev (AlFochino)	2
113	Schegol' Yu. (JulyaSchegol)	2
114	Zajtsev V.P. (Vyacheslav28)	2
115	Tikhomirov V.B. (t-slava)	2
116	Putilina E.E. (knyaz'676767)	2
117	nyan A. (arinyanx)	2
118	Justice (Bodya_Cr)	2
119	Singh R. (risb)	2
120	K E.K. (Ermek77)	2
121	Kuz'mina E.V. (Fiction)	1
122	Krasovskij E.A. (pegoopik)	1
123	Gitinomagomedov (gmansur88)	1
124	Filippova (verve)	1
125	Ryazantsev I. (heyheyhey)	1
126	Pototskaya (kusochek-91)	1
127	Abdulmanapov A. (Dvarik)	1
128	Voronov D. (Elnov.70)	1
129	Sah (tomatiks)	1
130	Tikhonova E.N. (evti)	1
131	Chetin (Chetin)	1
132	Nikol'skij I.Yu. (igoryun)	1
133	Ivanov I.I. (vlad91)	1
134	Khvostantseva A.M. (czm_nevi)	1
135	Egorenkov (shrek3d)	1
136	Sergey (Floony.by)	1
137	R (kirok)	1
138	Sidorovich O.V. (sidorovich_olga)	1
139	Dzhigirey A. (andrey_f0x)	1
140	Sanni A. (W_Squirrel)	1
141	Kuvshinov S.M. (passag)	1
142	Shabanova N. (ssssh)	1
143	Shestakov K. (password720)	1
144	Petrov (R1ko)	1
145	Novikov K. (novikovkostya)	1
146	Atoyan (N V)	1
147	Usov E.V. (YegorYssov990)	1
148	Khabirov B.A. (bulyn)	1
149	Ochirov Zh.A. (zao3)	1
150	Panicheva V.D. (_Vika_)	1
151	Mirgaleev I. (darius1)	1
152	Belalova A. (anabe)	1
153	Aro E.F. (Ekaterina Araud)	1					ban	ban
154	Golanov A.A. (Shikano)	1
155	Zan'ko D.I. (PRUF)	1
156	Bykovskij K.S. (_Uncore_)	1
157	Safaryan E.A. (edgar06081986)	1					ban	ban
158	Rodin (uoloki)	1
159	Zajtsev R.O. (zayrox)	1
160	Stepanenkova M.A. (Zireael47)	1
161	Musin A.R. (Azat3007)	1
162	adamova L.R. (leroniiii)	1
163	Ivanov I. (olegMagento123)	1
164	R. (Wra1th)	1
165	Nik (nikvip)	1
166	Tokar K.I. (Zegwaer)	1					ban	ban
167	Myagkostupov E.P. (Evgeny_Myagkostupov)	1
168	Korolkovs (fkorolkov2)	1
169	Engler (engler)	1
170	Skibin V.V. (SQL_vvs)	1
171	Kruglyak T. (wvwhi)	1
172	Lysykh V.K. (Usilitel')	1
173	S (sergeenko@phystech.edu)	1					ban	ban
174	Akameeva S.V. (SVA1)	1
175	Bulavko D.V. (az.esm)	1
176	Morozova P.D. (mat_harp)	1
177	siiiz A.E. (yotsumeeeeet454hg)	1
178	Lityushkin A.I. (alexlit)	1
179	Sokolov A.A. (Sok_91)	1					ban	ban
180	m4d (m4df0x)	1
181	Denisov N.A. (colorized!)	1
182	Ivanova (Alexa11111dsfsd)	1
183	Sar B. (Sobol-08)	1
184	Taranets A.A. (AnaStar)	1
185	Lyal'kova I.S. (Davydova)	1
186	--- (lockjaw556)	1
187	Shutova P.A. (iolin)	1
188	Soboleva I.Yu. (Matreshka_)	1					ban	ban
189	Bochkova (AnyaBo)	1
190	Lebedev E.A. (hardbit)	1
191	Ganiyev A. (lernanto)	1
192	S (n1pron)	1
193	Volod'kin Zh.Ch. (BakaJan1234)	1
194	Nazarov (Neislaw)	1
195	Novikov S.V. (StepashkaRuiner)	1
196	Petrukhin M.A. (DidicitDiscere)	1
197	Komarova (pkomarova)	1
198	Ivanov M.A. (Yokki)	1
199	Dsrov (dsrovvv)	1
200	test (qwerty37892)	1
201	Stroev A.A. (sni1lout1)	1
202	Amirbekov A. (lawest02)	1
203	Prokhorova (TeronSL)	1
204	Ivanova A.A. (Nasstia449)	1
205	roit (roiti_demo)	1
206	Yusupov T. (senddd)	1
207	lolkeker I.G. (smetenayoy)	1
208	Ivanov I. (aoaooaoaooaoaooaoa)	1
209	El'yashova E. (eelyashova)	1
210	Kurb (bibawyw)	1
211	Kozionov M.Yu. (perfalll)	1
212	Arakcheev (ragtime)	1
213	Dojko D.A. (ddoyko)	1
214	Bukov V.A. (Darkvran)	1
215	Bozhko D.A. (DanDjeck)	1
216	Semenich D. (MorganIskuplenie)	1
217	Serikbaj A. (arssssss)	1
218	Unregistered	52

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References