Today's statistics at "SQL Exercises"

September 10, 15:02 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	Sarkis'yan G. (gennadi_s)	3	1	207		3
2	Tsybin A.V. (magicdragon)	2			1	2
3	Gerasimova M.V. (Mar_G)	1			1	1
4	Bashkirov V.Yu. (Go gora)	2					15	26
5	Zanegina S.N. (asdfggk)	1					ban	ban
6	Bayguchukova A.M. (ABayguchukova)	14					12	21
7	Nebol'sin N.A. (Gripenll)	8					15	20
8	Gladkov D.E. (Horor39)	1					15	20
9	Malykh K. (CartOwOgraph)	2					15	18
10	S (shrl)	2					14	17
11	Malysh M.A. (Agur)	2					12	16
12	Dovganyuk T.D. (Tima12451)	2					10	16
13	Myakishev M.N. (iuiui)	3					12	15
14	Tazhibaev M.B. (MikoMiner)	2					11	14
15	Khen S.G. (KhenAlexandr001)	1					11	14
16	Ozerov K.A. (Nxthxn)	2					10	13
17	guru (rgcust)	2					10	13
18	Sadyk R.K. (Rukhaaa)	2					10	13
19	Kanatuly N. (kanatuly)	1					10	13
20	Karimov M.M. (marseel)	1					10	13
21	Kvitko E. (EkaterinaTOP1)	1					10	13
22	Shamshiev (Zhangir09)	1					10	13
23	Nikonova Y.V. (yanik27)	2					9	11
24	sul (sulem7)	2					6	11
25	Salmorbekov A.I. (Almabek03)	3					7	9
26	Zheludkov S. (zhsvyach)	2					6	9
27	Zhivotnoe B. (Limonna)	1					6	9
28	Turchuk A.V. (Anastasiya_Turchuk)	8					5	9
29	Chelovek P. (SQLovichock)	1					7	8
30	Oliver (klavamish)	1					6	7
31	Bespalova A.A. (verbi)	3					5	7
32	Ivanov (denisssss1234444)	19					4	7
33	Eliseeva O.S. (wspw777)	4					4	7
34	Kanetskij A.M. (ancami)	1					4	7
35	Evg E.E. (evg32)	1					4	7
36	Roflan (tk31)	1					3	6
37	Vlasenko V. (John 2484N1)	1					3	6
38	Tsyrenzhapova N.A. (nomini)	1					5	5
39	Ananasov M.A. (Ananasik11110)	1					5	5
40	Sokolova L.O. (vaaymee)	1					5	5
41	Shimbarevich M.A. (elevation)	1					5	5
42	Margaryan G.Kh. (margaryan_g)	1					5	5
43	Kozachek N.S. (@NikolasIoSif)	2					3	5
44	Fakhretdinov I.I. (Ildarushka1)	1					3	5
45	Mironenko O. (Ol'ga Miro)	1					3	5
46	Mal'kevich (Livex)	1					2	5
47	Kosov A.A. (Kintoky-san)	1					3	4
48	Ismajlova K.V. (ismkami)	1					3	4
49	Bulychev F.A. (Fedya2011)	2					2	4
50	Korolev R.V. (zouker)	1					2	4
51	Litvinenko I. (DivanLitva)	1					3	3
52	Sobachkin A.F. (Al_Wolf)	2					2	3
53	Mal'tsev V.A. (Viktorus2018)	2					2	3
54	Nikiforov L. (LeoNik991233212)	2					2	3
55	Sandrkina M.S. (kvosti)	2					2	3
56	Bykovskikh K. (Chirchik)	2					2	3
57	Shelaeva M.S. (reinaster)	2					2	3
58	Rogulyov S.M. (StasMixa11)	2					2	3
59	Khakhulina E.V. (Akulina)	1					2	3
60	Pitel' N.L. (NikiMx)	1					2	3
61	Manosin (jieel)	2					2	2
62	Abramenkova (muroni)	1					2	2
63	Sofronov A. (SAstrateg)	1					2	2
64	Kuznetsov P.I. (sdam)	4					1	2
65	Manatov I.A. (igrus)	2					1	2
66	Nesterov D.A. (saha909)	2					1	2
67	Artemev L. (Leonid S.)	2					1	2
68	K E.V. (GAB_KING_MASTER_GURU_DOTA)	2					1	2
69	Romanov (PirateCat)	1					1	2
70	Piotka V. (Pilotich)	1					ban	ban
71	Goldobin E.G. (prm259)	1					1	2
72	El'tsova T.E. (elt.tana)	1					1	2
73	Efremkin (Innokentij 25-j)	1					1	2
74	Korotkevich I.A. (somnambula)	1					1	2
75	Budyukin L.D. (StanceInfaimm)	1					1	2
76	Kejl D. (kdanl)	1					1	2
77	Trifonova A.M. (AsSash)	1					1	2
78	Lebed' (annetta1905)	1					1	2
79	Popeshkina E.S. (lllll123)	5					1	1
80	Grankina A.V. (anggrankn.vrn)	2					1	1
81	El'yashova E. (eelyashova)	2					1	1
82	Levin Yu.A. (pdestroyer)	2					1	1
83	KURS A. (kursik)	2					1	1
84	Bilyalov A.T. (blvwrld)	2					1	1
85	TEST (test346356)	2					1	1
86	Chetverukhina V.D. (reindeer121VC)	1					1	1
87	Khazieva V.Kh. (vasilek82)	1					1	1
88	son D.S. (v golove - NULL)	1					1	1
89	Resheto S.M. (sekku)	1					1	1
90	Minikhanov E.F. (ezereal)	1					1	1
91	Vlasov I. (ilyuhezz)	1					1	1
92	Khkhkh A. (XAH20)	1					1	1
93	Kuznetsova (kuzlivit1)	1					1	1
94	ivanov (egorivnvv)	1					1	1
95	Kapitanov A. (Liriodendron)	1					1	1
96	Polikarpov (Ubermenh)	1					1	1
97	Mirza (yusifmrz)	19
98	Kovalevskij P.V. (soulshon)	14
99	Ivanova (krxwl)	13
100	Frolov K.A. (Murderface_)	11
101	Konakbaev N.B. (pfizer)	11
102	P I.*. (IrinaPetr)	11
103	Gr D. (Demon_gr)	10
104	Sysoeva Yu.A. (Sysoeva)	10
105	Dzhamaldinov M. (Benediktof)	9
106	Cherry K. (KyleCherry)	9
107	Yana Y.Y. (KeiYana)	7					ban	ban
108	Sarybaj R.B. (Rakhman Sarbai))	7
109	Kucherenko A. (antontbt)	6
110	Maevskij A.R. (Lucky__)	5
111	Yarmolyuk N.V. (natalitalk)	5
112	Shil'chenkov M.A. (msmshilchenkov)	5
113	kennedy L.W. (leonkennedy)	5
114	Grigorij (Grisha118)	5
115	Erm?rat D.A. (Yermurat Dias)	5
116	Isagul A.N. (pobedinsky)	5
117	Alekseeva T.M. (TM)	4					ban	ban
118	Arshidinova M.T. (AMT)	4
119	Motylyuk V.E. (Vlammm)	4					ban	ban
120	Shakirov (shakirov_aa)	4
121	Shibaev (saah)	3
122	gri (snoozer)	3
123	Mel'nichuk M.S. (Melzeep)	3
124	Shtatskikh S. (ProneToSomething)	3
125	Churilov O.E. (HocokTopok)	3
126	lakshsh H.B. (demmipt)	3
127	Il'inchik F.A. (btwwteo)	3
128	Derbenev A.M. (AlexeiDerbeneuv)	3
129	Talipzhan E.B. (KaiLen)	3
130	Karacheva E.N. (Shustrik4)	3
131	Kondrakova (kikiku)	3
132	Moiseenko S.I. (mois_)	2
133	Kremen' Yu.A. (Test007)	2
134	Bryukvina O.Yu. (Findus)	2					ban	ban
135	Garifulla N. (Nurik2003)	2
136	Valieva D.V. (Dinavalieva)	2
137	Shishova P.S. (shajealess)	2
138	Anonimus A.A. (Noob_master_2007)	2
139	egor E. (egor_banan)	2
140	Litvinova (wawaw)	2
141	Khazhikarov K.M. (Hioms)	2
142	Stashevskij E.A. (Sweet Yogurt)	2
143	Kamaridenov T.A. (lsies)	2
144	NASHENTAEV I.N. (Iseke4561)	2
145	Bogoslavskij R.S. (anderrated)	2
146	Okulov A.M. (arkhalien)	2
147	Zhorov (zefir123)	2
148	Pogosyants (Ivan338)	2
149	Luchin D.A. (SunDay1337)	2
150	Kurochkin P.A. (qwrqwr)	1
151	Evchenko E.V. (evchenko)	1
152	Kostomarov A.V. (al29)	1
153	Koptel'tsev V. (selber)	1
154	none N.N. (n0ne)	1
155	Selezniov M. (Mihail Selezniov)	1
156	Zhur (Tanets)	1
157	Romanenkov (JoinBacardi)	1
158	Lazarev D. (Scrollcer)	1
159	Semenov V. (Vasya92)	1
160	Petrov (pololodgf)	1
161	Khaliullina S. (sofa1989)	1
162	T A. (Artemiscake12)	1
163	Ryabykin M.V. (Mikhail1704)	1					ban	ban
164	DFr (dwfefsdf)	1
165	Gusakova (Maslenok)	1
166	Titov (mahaon_1999)	1
167	Khoruzhij M.A. (Maksim Moloko)	1
168	Pavlov I.A. (WhiteCat110)	1					ban	ban
169	Sber (SberAnalyz)	1					ban	ban
170	Khamueva V.M. (Valentina Hamueva)	1					ban	ban
171	Nasyrova (Alewa86)	1
172	Burlakov (sergej.burlakov)	1
173	Musin A.R. (Azat3007)	1
174	Evdokimchik P.E. (Pavel Evdokimchik)	1					ban	ban
175	Fajzimatova Ya. (vertin)	1
176	Murzin (Salyvo)	1
177	Golovkin I.A. (GHOST2508)	1
178	R. (Wra1th)	1
179	Sychyov Yu.S. (Mrak.krd)	1
180	Kucher (Tema18)	1
181	Skibin V.V. (SQL_vvs)	1
182	Lysykh V.K. (Usilitel')	1
183	Akameeva S.V. (SVA1)	1
184	Velichenkov D.A. (Galotane)	1					ban	ban
185	Abramov V. (Ichigo Kurosaki)	1
186	Mutaborova (lizamutic)	1
187	Odnokurtsev (AlFochino)	1
188	Alekseev M.A. (ama2301)	1
189	K D.M. (asegik)	1
190	Tsyrenov A.B. (adam smith)	1
191	Kalibekov M.R. (Sardon)	1
192	penkova (sonya3)	1
193	Semenova A. (senasta)	1
194	Ischenko K.Yu. (Kpuh)	1
195	klimova (kem_171)	1
196	Funtova M.I. (fialka3)	1
197	edmond2 (edmond2)	1
198	kofuku (Kofuku)	1
199	Tynybekova G.R. (Gulaisha)	1
200	a A.A. (rdctfvygbuhjnk)	1
201	Bajbikova D.R. (Daniche)	1
202	New R.G. (newLogin)	1
203	Lugvischik (gopsweet)	1
204	Kashkov S.M. (kashkovvv)	1
205	Kulakov P.A. (NEPTUNE_)	1
206	Crea (_Kira_super_)	1
207	Gordeev N.A. (n1k1t4)	1
208	Gorskin (coldblooded)	1
209	Kalmykova T.S. (Red ololo)	1
210	Kuznetsova (moriq)	1
211	Yakovlev M.S. (Yung-cristy)	1
212	arshidin M.T. (mukaddas)	1
213	Sajlaubaj A.S. (Alikhanchik)	1
214	Burahan N.Z. (Nurzhaan_bbb)	1
215	Ivanov I. (vlatachi12)	1
216	Chimbiyan O.S. (S1onny)	1
217	Laskin K. (lask25)	1
218	Obukhov N.A. (ninipai)	1
219	Petrenko (Finn the Human)	1
220	Solov'eva A.E. (Aleksandra74)	1
221	Bobylev A. (Aleksei Bobylev)	1
222	Grachev I.O. (twinpixxx)	1
223	Sychyov V.A. (Hrenomet)	1
224	Khen S.G. (KhenAlexandr02)	1
225	Tazhibaev M.B. (Mirasiko)	1
226	Zatravin M.A. (mantven)	1
227	Fatkulina O.M. (viennie)	1
228	viktoroc (snrz)	1
229	Unregistered	62

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References