Today's statistics at "SQL Exercises"

August 27, 21:16 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	Serova M.M. (ssss.mmmm)	1			6	6
2	Tsybin A.V. (magicdragon)	1	1	33	2	4
3	Shibaev (saah)	2	1	67		2
4	Skokov B.S. (leks$$)	2	1	44		2
5	Jj (Jj111)	1			1	1	1	1
6	Ivanova O.N. (olga_ivanova)	1					15	28
7	Musin A.R. (Azat3007)	2					17	24
8	Nikolov P.F. (plamennf)	1					15	24
9	Markovtseva (Mika2aj)	1					14	19
10	M (lx700)	1					14	17
11	Terekhov A. (terekhovart)	1					10	16
12	Vasilev (Gurthem)	2					8	14
13	Kaliberda D. (DanyK1988)	1					9	13
14	Bonjovi (bomjour111)	1					8	13
15	Mironov R.I. (Romir123)	1					9	12
16	Randle T. (GBush21#)	3					7	11
17	Bocharnikova A.A. (Aleena22)	1					7	11
18	Kozlova N. (nadia9823)	3					10	10
19	Petsgol'dt P.K. (Pavel1PK)	3					6	10
20	Konogorskij L.E. (konogorsky Leo)	1					5	10
21	Tyurin A. (AnySkyF)	1					7	9
22	Tsygankova V. (tory_dm)	2					5	9
23	Assan B. (Kizaru011)	2					5	8
24	Van der Vin P.V. (DestroEdinson)	1					5	8
25	Radionov (fraster17)	1					5	8
26	Vakulko A.V. (VAlexandrV)	2					4	8
27	Fedorov (F0ll)	2					6	7
28	Shtol'ts (Shtolts)	1					6	7
29	Zubov A. (antxsha)	1					6	7
30	Babkin A.V. (BABKIN394)	1					5	7
31	Aubakirov R.B. (qwerty_Kazah)	1					4	7
32	Murlyk M.M. (Myau Murych)	1					4	7
33	Volski (Pixel404)	1					5	6
34	Markevich (pol^2y)	2					4	6
35	Surname (Void_107)	2					ban	ban
36	Akimova E.N. (Katrin_A91)	1					4	6
37	Piotka V. (Pilotich)	1					ban	ban
38	Ulybyshev A.A. (Alex__Lime)	1					3	6
39	Martynov (daeso)	1					5	5
40	Belousov E. (Evgen441)	1					5	5
41	Shtatskikh S. (ProneToSomething)	1					5	5
42	Zelenova E.D. (geil_river)	1					5	5
43	Nurmagomedov R.R. (Radix4)	1					4	5
44	Gnitij E.N. (gnitii)	1					4	4
45	Maksudov U. (Bukva)	1					4	4
46	Chazov N.V. (da413)	1					3	4
47	Shagalov O.L. (TTC)	1					2	4
48	Ikryanikov D.S. (Danila_I)	1					2	4
49	Korolev R.V. (zouker)	1					2	4
50	Oleinik V.M. (lllxxxlll)	1					3	3
51	Rubanov M.I. (GodNaoborot2)	1					2	3
52	Rikardov (Rikardio)	1					2	3
53	Lyakh (LinaL_)	1					2	3
54	Dimidov M. (Gwinbleiddd)	1					2	3
55	a A.A. (rdctfvygbuhjnk)	2					2	2
56	Karataev M.S. (Maksataks)	2					2	2
57	Chernyshov M.A. (dr. Jim ProSo)	1					2	2
58	Tarikuliev Sh.K. (Verkhovod)	1					2	2
59	Burnyasheva A.Yu. (pondquen)	1					2	2
60	Taurbek B.D. (Bagy)	1					2	2
61	Getm (ereks)	1					2	2
62	New R.G. (newLogin)	1					2	2
63	Svidritskaya (sonya_svv)	1					2	2
64	Koloskov (Art_Dart)	3					ban	ban
65	Kameneva (kristachak)	2					1	2
66	Nikita (kito4)	2					1	2
67	Mikaya (Gio9248)	2					1	2
68	Sheimukhov (sheymuh)	2					1	2
69	Zhuravleva S.K. (Vetechka)	2					1	2
70	Evseev D. (xOnelinx)	1					1	2
71	Sukharev A.S. (A_Greenberg)	1					1	2
72	Mozgovoj R.A. (Roman17)	1					ban	ban
73	Korolyov V.V. (CHOTKIY)	1					1	2
74	Sokolova D.D. (dasha_sokol2004)	1					1	2
75	Sidorenko (Junior_Explorer)	1					1	2
76	Goldobin E.G. (prm259)	1					1	2
77	Stytsyuk N. (natalia19930420)	1					1	2
78	Levin Yu.A. (pdestroyer)	1					1	2
79	Budyukin L.D. (StanceInfaimm)	1					1	2
80	kofuku (Kofuku)	1					1	2
81	Lcdma (LCDM138)	1					1	2
82	iVanov (john86)	1					1	2
83	Raviks V. (VladisRav)	1					1	2
84	Ilina N. (lkjahfjkseb)	3					1	1
85	Arbuz (dakto999)	3					1	1
86	Andreev (JacKNight)	2					1	1
87	Ryzbaev R. (XRustik)	1					1	1
88	Nemolochnov S. (Ferg73)	1					ban	ban
89	Puchkova A.S. (NesKolins)	1					1	1
90	Obukhov A.V. (Alex_71)	1					1	1
91	Ivanova (nahi1)	1					1	1
92	Antonova (Elena_No)	1					1	1
93	Pushkarev S. (PSV_n)	1					1	1
94	Urakina K. (Ksu774)	1					1	1
95	Romanchuk I.A. (ial.romanchuk)	1					1	1
96	Azhekbarova A. (Grocli)	1					1	1
97	Zyabkin (nteadevyy)	1					1	1
98	Murat I. (Inzhu_murat13)	5
99	Murat M. (murat_mukhammed)	3
100	Ivazova E. (elj)	2
101	Koptel'tsev V. (selber)	2
102	kapranov K.S. (shaq2kir)	2
103	Gonvharov T. (timurgoncharov)	2					ban	ban
104	Abilkhan Y. (AYERS)	2
105	Rodina K.A. (Ksdina8)	2
106	Shishkina A. (anna_195)	2
107	Nikolenko N.K. (Kolwan)	2
108	Kurochkin P.A. (qwrqwr)	1
109	Krasovskij E.A. (pegoopik)	1
110	Chuchkov O.E. (WIT)	1
111	88 (Shaiden)	1
112	Korovina (kovalski2000)	1
113	Stepanov (ssg24)	1
114	Degtyarev D. (DimaD)	1
115	Lavrinovich (Lavrik_2600)	1
116	Abramenkova (muroni)	1
117	Ivanov A. (Aleksius)	1
118	Ushakov S. (MoyPsevdonim)	1
119	Kars T. (KarsTS)	1
120	Lukin M.A. (Astrum87)	1
121	Gul'ko M.V. (gulm)	1
122	Il'enko D.S. (Dmitry357)	1					ban	ban
123	Tikhonova E.N. (evti)	1
124	Vozdigan A.A. (KumaRYo)	1
125	Tazhitdinov T. (polosatyi)	1
126	Orlov A. (esterio)	1
127	Mazur I. (Mazur_IK)	1
128	Orlova P. (krevedko_max)	1
129	Zakharov G. (4atlanin)	1
130	Gorynin I.D. (thewoodward)	1
131	Yarullina L. (Lils)	1
132	Ti (Ost2020)	1
133	Smirnov A.S. (orange_peel)	1
134	Ivankov (red_invad)	1
135	Zhuravlev E. (LuckyHamster.)	1
136	Eliseeva A.S. (nastya_eliseeva)	1
137	Pronina A. (murburvur)	1
138	Oraev R. (raevus)	1
139	Soliev O.O. (Osoliev2oo3)	1
140	Smetanina S.V. (SvetlanaSvetlana82)	1
141	Kulikov V.S. (VSK99)	1
142	Yefanova M.Y. (mari_5)	1
143	Kaplun (LetMeIK)	1
144	Boltanin (ssnezhno)	1					ban	ban
145	Misnikevich R.M. (RusMich)	1
146	Terekhov I.E. (foxboy)	1
147	Kulikov E.A. (Kaloriy_)	1
148	Brajnin S.O. (brusha)	1
149	O N. (Sykone)	1
150	Suchkov (shlyapos678)	1
151	Voronin A.A. (DandyDV)	1
152	Sarkis'yan G. (gennadi_s)	1
153	Zhuravleva M. (marizh)	1
154	Shipilovskikh L.M. (ladashipm0121101)	1
155	Rodin (uoloki)	1
156	Sber (SberAnalyz)	1					ban	ban
157	Abramova Yu. (GalaxyTears)	1
158	Skvortsov (RukwoR)	1
159	Galustyan T. (TTT1111)	1
160	Soldatov (Li351)	1
161	Kokoulina E.A. (janekoko)	1					ban	ban
162	P I.*. (IrinaPetr)	1
163	Golovkin I.A. (GHOST2508)	1
164	Zheludkov S. (zhsvyach)	1
165	R. (Wra1th)	1
166	Folomkin I.N. (onevay)	1
167	Filev I.D. (Mxrningstarx)	1
168	Nuriev T.T. (AngelLives1)	1
169	Chetverukhina V.D. (reindeer121VC)	1
170	Gafurov A.R. (Gafurov A.R.)	1
171	Shaikh (Angy33)	1
172	Duisen A.-. (qazyqarta)	1
173	Skibin V.V. (SQL_vvs)	1
174	Lysykh V.K. (Usilitel')	1
175	Akameeva S.V. (SVA1)	1
176	Sedun A.A. (antoshaSQL)	1
177	Osokina (sedge)	1
178	Peshkova E.E. (kato_pesh)	1
179	Abramov V. (Ichigo Kurosaki)	1
180	SIbagatullina (solnyshko199)	1
181	Lukina A.L. (AnilikaLukina)	1
182	Zakovryashina (z.anya)	1
183	Rigel' I.A. (Rigel_)	1
184	Ibo K. (Kemchik)	1
185	Lookism M.M. (asalam)	1
186	Bogatyrev N.V. (BNV2873)	1					ban	ban
187	Taranets A.A. (AnaStar)	1
188	Bylich D. (Dianka578)	1
189	DMRITsD (TheCupOfMagic)	1
190	Kulikov A.Yu. (Ondrata)	1
191	Ab E.L. (ellllllll_1337)	1
192	Myrzabek N.K. (nurrrzat)	1
193	Starkov A.V. (anstarko)	1
194	Abdullina A.Yu. (Alsu07)	1
195	Yes A.N. (Specialist71)	1
196	Ponomarev M.P. (MatveyF)	1
197	Kokorin (Eteroton)	1
198	pinegin A.V. (0_o)	1
199	Kazantsev V.D. (kentiko_0)	1					ban	ban
200	Burtonov A.V. (tak to)	1					ban	ban
201	Berseneva T.M. (Bersa_3785)	1
202	Egorov S. (segorov)	1
203	familievna (tatianka111)	1
204	Kondratenko N. (thrust_set)	1
205	zamanova (gulkh)	1					ban	ban
206	Kostyuchenko (enova)	1
207	Voinskaya A.A. (Selest48)	1
208	Vasil'eva S.A. (@SSS)	1
209	Bublikov A.G. (geterozis22)	1
210	Nesterov D.A. (saha909)	1
211	Samsonova (Victoooooria)	1
212	T E.V. (guru_sql007)	1
213	Orlova N.M. (Nadzeya8)	1
214	Mikhajlova L.A. (Lyudmila6999)	1
215	voroschuk A.N. (dumb_anchovyyy)	1
216	Osadchij A.Yu. (AlexOs36)	1
217	Pupkin V. (typoboss)	1
218	Akhatov I.R. (AshenWolf)	1
219	Kolesnikova (Monika26)	1
220	Chalbushnikov S.Y. (Sergej Ch)	1
221	Ivanov (Ev1lm0nkey)	1
222	Denisov I.O. (Bidul)	1
223	Mititel (drandylet67)	1
224	Pramoth (Pramoth)	1					ban	ban
225	Pramoth (pramotha)	1					ban	ban
226	Chugunov M. (maximsuch)	1
227	Ivanov I.I. (FQFEWGW)	1
228	Aleksandra A. (tvusea)	1
229	Draga A.A. (syllvis)	1
230	Mudarisova N.R. (nargi098)	1
231	Unregistered	40

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References