Today's statistics at "SQL Exercises"

February 25, 11:01 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	Koverdin K.D. (koverdin)	1			16	22
2	Kalimullin E.R. (EmilKalim)	1			15	17
3	Chechushkina A.M. (Anastasiya Chechushkina)	2			6	9
4	Annageldiyeva G. (Annageldiyeva)	1			7	9	ban	ban
5	Kosovskij I.P. (kosovskii)	1			7	9
6	Bugaev K.E. (Kostya_B74)	1			4	5
7	Kayanovich A. (ArtemKaMMF)	1			3	4
8	Safronov P.A. (Paulus73)	1			1	4
9	Burmenskiy D.O. (dnlbrm)	1	3	-13		3
10	Shlygin D.A. (Denis Shlygin)	1			3	3
11	Zenov K.D. (kirillzenov)	1			3	3
12	Androsenkov (Evgeny_Andr)	1			2	3
13	fioletovaya (fioletovaya2)	2	2	114		2
14	Primakova (PrimakovaKristina)	1			1	2	ban	ban
15	Sikovskaya V.O. (lerkas)	1			1	2
16	Lev (Romanza400)	1	1	1		1
17	Akylbekov I.N. (geto)	1					13	22
18	Bashkirov V.Yu. (Go gora)	1					15	19
19	Zhilin N. (Nikita Zhilin)	2					9	11
20	Banzarov E.B. (buddha.)	1					9	11
21	Kudimov A. (Artem.K)	1					6	10
22	Sebastian A. (Anandhu)	1					5	10
23	Nov I. (indels)	2					ban	ban
24	Matytsina (Vetra)	1					7	9
25	Yumanov A.Yu. (Alexey-dwae12)	1					5	9
26	Marat A.N. (Abla1)	1					5	8
27	Mankhirova S.N. (mayandso)	1					5	8
28	Chernova A.S. (fubarbert)	1					5	8
29	Ogorodnikov D.A. (TanatosX)	1					4	8
30	Chernyshov (Egych)	2					6	7
31	Fil'ko Yu.G. (1ns@)	2					6	7
32	Tkacheva K.A. (krissttik)	1					6	7
33	Romanenko A.S. (ladybag2319)	1					6	7
34	Tarsekar A.D. (@ntara)	1					5	7
35	Grinenko I.S. (grenka9)	1					5	7
36	Gombozhapov A.V. (skandall)	1					ban	ban
37	Pil'chinov I. (Sengoku)	3					4	6
38	Tagirov F.F. (Fidail21021998)	3					4	6
39	Pan'shina A.G. (AlexashaKim)	1					5	5
40	Erykalin P. (Lavorit)	1					4	5
41	Amankulov A. (qawqaw)	1					3	5
42	Gabdulkhaev (yolomafi)	1					3	5
43	Sukhov (egorkagodik)	1					3	5
44	akm (educatedf)	2					4	4
45	Rabdanova K.E. (hwq)	1					3	4
46	Drygin D.D. (DanilDryg)	1					3	4
47	Bogatyrev Zh.I. (ujin9011)	1					3	4
48	Egorova S.V. (sondanu)	1					3	4
49	Shutov S. (SkiZzo)	2					2	4
50	Erzhanov E.E. (erzhan1981)	2					2	4
51	n A.N. (Fra1z)	1					2	4
52	Mel'nikov E.A. (Evgeniy_2.0)	1					3	3
53	Nik_ 3. (Nik_1337)	3					ban	ban
54	Abramova K. (axiang)	2					2	3
55	Zhebegenova M.R. (29330)	1					2	3
56	Afanevich E. (Ketra)	1					2	3
57	Lysakova (Svet Amur)	1					2	3
58	Lobanova M.L. (lobanovamariya)	1					2	3
59	discopony3 (discopony)	1					2	3
60	Prokof'ev A.O. (Artem123414)	1					2	3
61	Sabanova (diana1989)	1					2	2
62	Reuben D. (Rbn977)	1					2	2
63	Selokar A.R. (Anjali0307)	1					2	2
64	kamble (Meetkumar)	1					2	2
65	Fomin R.I. (Romashka2006)	1					2	2
66	Tsyrendylykov A.A. (pulymup)	1					2	2
67	Tyuleshkaliev K.R. (Megazhir67)	1					2	2
68	Rakhmatullin I.A. (boysbandmibru)	1					2	2
69	Ivanov I.I. (vlad91)	2					1	2
70	Pelepelin A. (ToniMekh)	2					1	2
71	Shilova A.A. (Alyona Shilova)	1					1	2
72	Vakulko A.V. (VAlexandrV)	1					1	2
73	sontakke V.V. (vanshsontakke)	1					1	2
74	Kamyshov D.N. (SlavaRossii3)	1					1	2
75	K B.S. (Xpline)	1					1	2
76	Andromedov (Andromeda12)	1					1	2
77	Namdakova S.Ts. (larakar0_0)	1					1	2
78	Monte-Cristo G. (Danikk)	1					1	2
79	Krinberg A.I. (LEHAKR13)	2					1	1
80	Dampilov E.M. (Dampilov Erdem)	2					1	1
81	Pavlovskij (Pavlovsky_maxim)	2					1	1
82	Gorbunkov M.S. (gms)	1					1	1
83	Ergonov A.G. (LexusLeha)	1					1	1
84	Novikov N.D. (nikitosikss)	1					1	1
85	Litejkin M.L. (Liteykin)	1					1	1
86	Yukee (YukeeQR)	1					1	1
87	KWON D. (daegyeom)	1					1	1
88	Koptel'tsev V. (selber)	3
89	Krasovskij E.A. (pegoopik)	2
90	Shipilov M. (Nishtyak)	2
91	Zmushko O.A. (OlyaZmushko)	2
92	Zhunsaliyev S. (Mirocu)	2
93	oorzhak A.E. (oorzhak)	2
94	Ionis K.M. (K@trina)	2
95	Nikonorov O.A. (nikolega)	1
96	Kir'yanova (key1)	1
97	Yakushev E.A. (Ejhi)	1
98	Shibaev (saah)	1
99	Morokov A.L. (Flagman)	1
100	Frantsuzov E.A. (Micron)	1
101	Polyakov V.M. (rock_4)	1
102	Sil'van (silvr)	1
103	Grishina T. (Tatyana Grishina)	1					ban	ban
104	Migalko E.Yu. (LenaMiko)	1
105	Yarovaya Yu.V. (YuliyaYar)	1					ban	ban
106	Serebryakov I.B. (Vano23)	1
107	111 (4matt)	1
108	Anders (iGrayMan)	1
109	Abdyraim A.U. (aabdyraimova)	1
110	Topnikov M. (miktop97)	1
111	Kachalov Z.A. (love_kach)	1
112	Kuznetsov K.Yu. (kyzkiri)	1					ban	ban
113	Narmetov T... (MrSverg)	1
114	Amirzhanov B. (Beknar)	1					ban	ban
115	Perevoznikova M.I. (Mariya123456)	1
116	Najik (Najik7)	1
117	Ionis D.V. (Magic_Black18)	1
118	Frank V.V. (franknotpunker)	1
119	Skokov B.S. (leks$$)	1
120	Alabushev P.O. (Drama_Lim)	1
121	Prakop V.V. (VladPrakop)	1
122	Nerubatskaya A. (nerubashka)	1
123	P I.*. (IrinaPetr)	1
124	Novikov S.V. (@Ser589QA)	1
125	Nikonov A. (Nikon97)	1
126	Odegov A.I. (KovroLitik)	1
127	R. (Wra1th)	1
128	Nagibina S.V. (sofya_nagibina)	1
129	Ivanov I.I. (berezjymrf)	1
130	Geirby A.A. (Naranchika)	1
131	Nazymbekov B.B. (Bauka05)	1
132	iskarova L. (cyberdeadline)	1
133	Novikov I.D. (InDel)	1					ban	ban
134	Lysykh V.K. (Usilitel')	1
135	Kostin S. (Serg10_88)	1
136	Korgambekova A.K. (Ajzada27052000)	1					ban	ban
137	Arzumanova M.V. (marasql13)	1
138	Shejdak A.V. (sheidaknastya)	1
139	Druchkova R.A. (prveftir)	1
140	Yanpol'skij G. (9zno)	1
141	Odnoklubov I.A. (I. Odnok)	1
142	Dolgaya D.V. (dernilliop)	1
143	Lazarev D.D. (Lazarev)	1
144	JonDeer1 (JonDeer1)	1					ban	ban
145	Vladislavovich A.C. (ArtemChernov)	1
146	Belov V.A. (scraggyman_73)	1
147	Buraevskaya A.O. (Alexandra Buraevskaya)	1
148	P N.V. (Kolianio)	1					ban	ban
149	Tembhurne P.P. (prajkta)	1
150	Pyatkova Yu.V. (Yuksik)	1
151	banana D.M. (Danabanana77)	1
152	more T.D. (Trishti)	1
153	Kawle S.D. (Sandesh01)	1
154	Khovrin (LunarShadows)	1
155	Malakhov (dimmal)	1					ban	ban
156	Gurnule M.P. (moit8080)	1
157	Samandar S.M. (Samhf)	1
158	Duka L.V. (data_manipulator)	1
159	Sejtkan T.D. (Tair)	1
160	Kolokol'nikov A.A. (bdtest2v)	1					ban	ban
161	Protasov M. (MaxProtas)	1
162	Ayalwar V.V. (vidhiayalwar)	1
163	Leont'eva S.M. (sofyaleo)	1
164	Litvinenko (Tori Li)	1
165	Grechishnikova L.M. (Lidiya0512)	1
166	Deev A. (fhh)	1
167	Afanas'ev A.E. (sevanchik12)	1
168	Arshanov A.I. (Balzhima)	1
169	Antonov S.E. (AnSoE)	1
170	Zambalaeva M.V. (Maria642)	1
171	Tsytsykova A.D. (fhvhdchi)	1
172	Ilyakhin M.A. (Max Ilyakhin)	1
173	Spitsyn A.A. (Dep_Alex)	1
174	Ponomarenko N.G. (FLENDSPACE)	1
175	Shemyakov D. (happy_d)	1
176	Indira (MukhametoffIndira)	1
177	Kokhovets A. (angelina1599)	1
178	Shvetsov D.Sh. (DanechekSw)	1
179	Kakas'ev N. (DeJaVu_)	1
180	Hatamov J. (Javid_H)	1
181	Antonova M.A. (Marusyaka)	1
182	K D.I. (LK_)	1
183	xakimjonov N.K. (nayouzcard)	1
184	Korovina S.S. (Svetlana_SPb)	1
185	ergakov (snafcheg)	1
186	Sharakhmatov R.E. (FongrIX)	1
187	Trofimov H. (gr1kkk)	1
188	Li N.V. (nikita.nlv)	1
189	Efimova V. (Spaverabi)	1
190	Aldoshkin A. (Sablezub$$$)	1
191	Testing T.S. (Random1448Mand)	1
192	Malika M.M. (mmoldazaimova)	1
193	Unregistered	427

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References