Today's statistics at "SQL Exercises"

October 30, 14:00 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	Timonin D.E. (DmiTim)	3	6	58		13
2	Sh S. (junopark1)	2	2	67		5
3	A M.A. (Mmmmmmmmmm)	1	3	3		3
4	Tsybin A.V. (magicdragon)	2	1	49		2
5	Pip (Scally_milli)	1			1	1	11	21
6	Tverdokhlebov D.S. (Danil_Bread)	2			1	1
7	Galimov D. (gotenx)	1					ban	ban
8	Molokanov A.A. (qwasar)	1					15	28
9	Romanova A.D. (chipsik)	1					15	28
10	Myakishev M.N. (iuiui)	1					ban	ban
11	Gladkov D.E. (Horor39)	1					ban	ban
12	Lyutenko M.V. (GUboshlep)	1					15	23
13	Klochkova D.A. (Daria_Klochkova)	2					ban	ban
14	Penyaz' A.S. (Nastikit)	1					12	22
15	Pip (Sunshi)	2					15	20
16	Perepelitsa S.A. (velsi)	1					15	20
17	Dubrovina Ya.M. (ymdyx)	1					15	19
18	Shabunin R.S. (romeo222)	4					15	18
19	Scherbakov (grgrgrgr)	3					15	18
20	Burmaldenser (sesh_214)	2					15	18
21	Sorokina E.S. (lzvtsrkn)	1					10	14
22	Sattarov A.R. (Aidar_Sattarov)	2					9	12
23	Bochkarev V.A. (GromiKK232)	1					7	12
24	Klimontova M.A. (white1804)	1					5	12
25	Abrosimova L.S. (Llladen)	3					9	11
26	Smetanin (sv2016)	2					9	11
27	Voskresenskaya E.D. (Elenaaaa)	2					8	11
28	Vasil'eva E.O. (squiidyy)	1					ban	ban
29	Grishin V.S. (Vadimus)	1					7	10
30	Kukavitsa A.V. (Foxcatch3r)	2					7	9
31	Larionov (Varen1k)	2					7	9
32	Sevruk M.V. (chipixxx)	2					6	9
33	Reshetnikova P.A. (polinaresh)	1					6	8
34	Beloborodov R.E. (nuoma)	1					6	8
35	Lagun P.P. (PrSh23)	2					5	8
36	Chajkov I.V. (Lokhmatyj gnom)	1					5	8
37	Antoshkova (Proton0_0)	2					6	7
38	Larin (terok)	1					6	7
39	Kekke (zabiv1)	1					6	7
40	Olejnikov G.K. (GLoken)	1					4	6
41	Gorbunova A.Yu. (sanu25)	1					4	6
42	Belousova A.S. (anny.sch)	2					3	6
43	Belashkin I.A. (Tookser)	1					3	6
44	Korkin M.A. (max11rrr)	2					5	5
45	Averkina D.E. (hrkww)	2					5	5
46	Jose J.P. (ajpervil)	1					5	5
47	Revnivykh M.S. (revnivykhm)	1					5	5
48	Mironova A.M. (mrnvnast)	1					5	5
49	Prolygin D.R. (MrVolax)	1					5	5
50	Plyukha F. (ferzpluha)	1					5	5
51	Trofimova T. (TTrofi)	2					4	5
52	kujabergenova D.N. (kujabergenovadilfuza)	3					3	5
53	Orekhov G. (NothingLess)	1					3	5
54	Krivushkova A.I. (sk_2002)	2					4	4
55	lobogika D.B. (loba)	1					4	4
56	Vyal'tsev G.F. (Jiu)	2					3	4
57	Mironenko O. (Ol'ga Miro)	1					2	4
58	NV (mester111)	1					2	4
59	Matveeva O.N. (Olga_Matveeva)	1					2	4
60	Markin N. (Qmaro)	2					ban	ban
61	An A.Ch. (Apples111)	2					3	3
62	vorobev V.K. (chulok)	2					3	3
63	Transnigger228 T.T. (Gaynigger)	1					3	3
64	Radkovich V.I. (Vlaid)	4					2	3
65	Khopta A. (APetroWhich)	1					2	3
66	Usmanov (iusmanovvv)	1					2	3
67	Bel A. (Alex1112)	1					2	3
68	Sanina D.O. (Daria-07)	2					2	2
69	Kozlov E.Yu. (Egronnn)	2					2	2
70	Lomov R.V. (Silverom)	1					2	2
71	Dulanov A.S. (8bobrik8)	3					1	2
72	Chastova E.A. (Kate44)	3					1	2
73	Potapov I.I. (IPot)	2					1	2
74	Evsyukov I.E. (HlebusheK)	2					1	2
75	7shkin S.V. (Slavnik)	2					1	2
76	T (lazochka)	2					1	2
77	Shibko A.M. (Ales'_1987)	1					1	2
78	Elnur E. (ElnurFRK)	1					ban	ban
79	Lesnikova A. (nebulaX365)	1					1	2
80	Kulbaeva D.D. (dilnozakulbaeva82@gmail.c)	1					1	2
81	utepova S.O. (shaxlo)	1					1	2
82	Krivets M.S. (Maria Krivets)	1					1	2
83	Volo (v1rtuoz)	1					1	2
84	Mambekova D. (Dana M)	1					1	2
85	Pastee (Pastee)	1					1	2
86	Gynga Ya.S. (MROrange_Cat)	1					1	2
87	Ivanova A.M. (Ivanova Aleksandra IT-1)	1					1	2
88	Natal'ya (freebst)	2					1	1
89	Ajsda D. (Dmr1123)	2					1	1
90	Nikolaev A.N. (AlexeyHeizenberg)	1					ban	ban
91	Beloborodov (EvgenijB)	1					1	1
92	Liv L.I. (FLACKzhuk)	1					1	1
93	Vasil'ev (GudiniMoonlight)	1					1	1
94	Khakhulina E.V. (Akulina)	1					ban	ban
95	Lanaev N. (nosferatu666)	1					1	1
96	Yarmukhametova G.U. (glagosha)	1					1	1
97	Sarkis'yan G. (gennadi_s)	4
98	Rodina Kh. (kris.poe)	3
99	Khasanov (Zephirka)	3
100	Zubkova M.I. (qwerlll56)	3
101	borisov A.N. (borftn)	2
102	Ermilov R.I. (Nezetcaut)	2
103	P I.*. (IrinaPetr)	2
104	Serazetdinov I.R. (IldarSerazet)	2
105	Orazniyazova G.O. (Banu)	2
106	Zhukov A. (Alex5961)	2
107	Petrova S.Kh. (Petrova Safina)	2
108	Iv (Ta_iv)	2
109	lebowskd (lebowskd-aboba)	2
110	Leshko A.S. (Alex626483)	2
111	Gritskevich G.I. (Ferrum1488)	2
112	Viner O. (OKSA99)	2
113	Petrov I.P. (Katya_3e4242)	2
114	Kabanina A.S. (Anechkaallcash)	2
115	Krutoj A. (legenda495)	2
116	Lukin A.V. (lamer_Horizon)	1
117	Shibaev (saah)	1
118	Krasovskij E.A. (pegoopik)	1
119	Minashkin A. (Wallrider)	1
120	Kostomarov A.V. (al29)	1
121	Koptel'tsev V. (selber)	1
122	Lev R.A. (Septicflesh)	1
123	Tikhomirova Yu. (YUz_)	1
124	Gitinomagomedov (gmansur88)	1
125	Yakubovskij B.I. (Yakubovsky)	1
126	Tsolis N. (Nick1978_GR)	1
127	Savenko V.A. (Vladislav20)	1
128	Exclusive M.B. (MasterB)	1
129	Sulimova (Marmelad2902)	1
130	Buyko V.V. (VicaByjOK)	1
131	Khachatryan (aramzik)	1
132	Martyschenko V.S. (Nomad_V)	1
133	Zabrodina V.Z. (victorinya)	1
134	Timofeeva I. (Miro Kaas)	1
135	Beketov (dimabima)	1
136	Rodin (uoloki)	1
137	Romanov Yu.P. (Horek9)	1
138	Ptashnik R.O. (PorTUgaL11)	1
139	Sidorkin K.I. (balda77)	1
140	R. (Wra1th)	1
141	Belyaeva (Kuzyaka)	1
142	Komov S.M. (Komov S. M.)	1
143	Timofeev M.S. (timofeevms1982)	1
144	Maratov O. (spoer)	1					ban	ban
145	Abramov V. (Privet ot Sashi Borovkova)	1
146	Kad V.Y. (s108)	1
147	Mamuchadze V.D. (Valeria48)	1
148	Morozov A.V. (heyitstonyy)	1
149	Ivanov I.I. (pasta123!@#)	1
150	Rezvan (SilentLand33)	1
151	Roma U. (Ulana_Roma)	1
152	Berseneva T.M. (Bersa_3785)	1
153	Levin Yu.A. (pdestroyer)	1
154	Lezhnin A. (LagerBier)	1
155	Bor B.L. (Berutam)	1
156	Nesterov D.A. (saha909)	1
157	Dugin D.R. (DYGIDAI)	1					ban	ban
158	alina (alina8787)	1
159	Makhkamov M.B. (Magamomed)	1
160	Davydova M. (Mariya1723)	1
161	Suntsov K.O. (KirillSuntsov11)	1
162	Amburtsev A.A. (AlexanderAmb)	1
163	Moiseenko S. (Mozheviko)	1
164	Tatarinova A.D. (obezyana)	1
165	Goryachev S. (SergGoryachev)	1
166	Smirnov M.V. (onemisu)	1
167	Omirbaeva G.B. (Silphy)	1
168	Yunevich M. (Maria5472946)	1
169	Bekbolotova T. (Jiselle)	1
170	Bratilov Z.M. (Aghenon)	1
171	Selivankin M.V. (MikhailSelivankin)	1
172	Bur'yan N.S. (Mr_Xavaly)	1
173	Sechnoj A.K. (Sechnoj Andrej)	1
174	Chistyakov N.R. (chistiakovN)	1
175	turdibaeva N.N. (nilufarturdibaeva)	1
176	Lidvina I.S. (korella)	1
177	tkachenko (NotFufx)	1
178	Bochkov R.A. (qwerty98888)	1					ban	ban
179	Bochkov R.A. (qwerty12391234)	1					ban	ban
180	Eskendarov (remontano)	1
181	Baranov N.A. (n1kasesql)	1
182	Ukhov A.A. (Art1kkle)	1
183	Khodyachikh V.O. (valeria01)	1
184	Trushin (the_n0b0dy)	1
185	Litvinova R.L. (litviinovva)	1					ban	ban
186	Egorov N. (Negorov)	1
187	M (prismade)	1
188	Hakobyan T.-. (Tiggodon)	1
189	Starostin D.D. (Turilan)	1
190	Zudov V. (zud94)	1
191	Galimov D. (Per0Sper0)	1					ban	ban
192	Knyazev Yu.Yu. (-kyy-)	1
193	Vekoshkin A.V. (avekoshkin)	1
194	Izyumov A.S. (Izumoid)	1
195	shagaev (kuelimosss)	1
196	Tikhanin A. (Frogesoos)	1
197	Shumakov K. (E11ven)	1
198	Mnenie N.E. (Nikitij)	1
199	Mukhanova A. (Arailymmmm)	1
200	Naumenko A.I. (Njkaery)	1
201	Pashkevich V.E. (winter26)	1
202	Barets (weaasell)	1
203	Shidlovskij K. (Arieta)	1
204	Isyanova A.A. (Aliya010490)	1
205	Kholodov V.D. (dsidsai)	1
206	Ivanov A.A. (qwevbn)	1
207	Kushnir (hryk)	1
208	Viktor V.V. (vikginc1)	1
209	Shabunin R.S. (romeo224)	1
210	Kryvobok O. (Helga678)	1
211	Pol'skikh (dmitryp1993)	1
212	Kabakov (kabakovt)	1
213	Golikov E.V. (golikov96)	1
214	Ivanov A. (Vargor)	1
215	Unregistered	40

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References