Today's statistics at "SQL Exercises"

October 25, 18:09 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	Andreev K.A. (sun1zu)	1			11	13
2	Chirikova N.V. (NataliCh)	2			8	11
3	Grishunin (he11rage)	1			3	3
4	Man'ko A.M. (alisasa)	1			2	2
5	Skrylyova (Anastasia555_55_5)	2	1	2		1
6	Kartavtseva A.A. (idfcatu)	1					43	73
7	Gladkov D.E. (Horor39)	2					ban	ban
8	Riskov V.K. (FidjetStar)	2					15	25
9	Grishina E.M. (LG)	1					15	25
10	D'yachenko I.M. (Gremlin_O)	3					15	22
11	verysimpleuser000 (verysimpleuser000)	1					ban	ban
12	Petryakov V. (even_cute)	2					15	18
13	Klochkova D.A. (Daria_Klochkova)	1					ban	ban
14	Rom R. (Blurp)	1					14	16
15	Egorychev D.A. (dudi0d)	2					13	16
16	Suntsov K.O. (KirillSuntsov11)	1					9	16
17	Makushin A.V. (sqldemon2)	2					8	15
18	Escherkina D.S. (somnig)	1					10	13
19	Revin L. (Dog_WaterSQL)	1					9	13
20	interesniy C. (a_kkxr)	4					8	13
21	Serkov (TFD_131)	2					8	13
22	Karpov V.V. (Gudini_)	2					10	12
23	Chebaev D.O. (firgost)	2					5	10
24	Kolchin M.M. (KolchinMaksim)	1					5	9
25	Mityukov E.D. (hezky)	3					5	8
26	Valiullin A. (LinkSeventy)	3					5	8
27	Salikhov R.A. (Ruzik707)	1					5	8
28	Orlov A. (amorlov.sev)	1					5	8
29	Belkov D. (Belkov2026)	1					3	8
30	Maksimova M.A. (mary_max)	2					6	7
31	Rusakovskaya A.V. (Arina 2832)	2					6	7
32	Mikhajlov G. (chipuchka)	1					5	7
33	gants S.B. (sakyts)	1					5	7
34	Volo (v1rtuoz)	1					6	6
35	Gachegova I. (ilonza G)	2					4	6
36	Dvornikova S.G. (Clairetel)	1					4	6
37	Safiullin D. (DAMUR)	1					4	6
38	popov V.V. (vladvladvlad322)	5					ban	ban
39	Pavlov A.A. (Sashulia88)	3					3	6
40	Timofeev P.A. (PetrT-19)	2					3	6
41	Cherednichenko A. (alexei_86)	1					ban	ban
42	Danutseva (Kopchik)	2					5	5
43	Sfahiktrosh (Zar_vik)	5					4	5
44	Sukhotko (SMaxtec)	1					4	5
45	Mashutin (Andruhanez)	2					3	5
46	Muftiev I.N. (imncoder)	1					3	5
47	Semenov V.N. (FullJoin77)	2					4	4
48	Fallen (540MHz)	2					4	4
49	hazzy K. (hazzykoz)	2					4	4
50	Andreeva D.K. (DarYmKa)	2					2	4
51	kar (ipram)	2					2	4
52	Ivanova (evkaa1234)	1					2	4
53	Kuka (KUKAmemas)	1					2	4
54	Khanmurzina D.R. (dana_han)	1					2	4
55	Starchikov R.P. (Sulla17)	1					3	3
56	Svitavskaya (anansvit)	1					3	3
57	Kovtun A.Yu. (sillygoosegagaga)	2					2	3
58	Utkin (almazz_3)	2					2	2
59	Kul'chenko N.V. (MidWinter)	2					2	2
60	Yussupov S. (orrr)	1					2	2
61	Nacharov A.Yu. (alexNachos)	1					2	2
62	Zakharov D. (Pumpkin123)	1					2	2
63	Radchenko R.K. (qweqfafsf)	3					1	2
64	Mitrey (_mitrey)	2					1	2
65	Doroshenko S.A. (OrYSlliu)	2					1	2
66	Razova D.V. (s7ipper)	2					1	2
67	Gusenov S.Yu. (Said_05)	1					1	2
68	Beketov (dimabima)	1					1	2
69	Yakovlev (The_Max)	1					1	2
70	Ebert D. (Trueshka)	1					ban	ban
71	Sergeev A. (f_train)	1					1	2
72	hsdh H.H. (hrcj)	1					1	2
73	Solomnikova (AlexSolom)	1					1	2
74	Mishenev M.M. (Mishenev Mikhail)	1					1	2
75	Arbuzov (Andr76)	1					1	2
76	Velich E.A. (Ainakakal)	1					1	2
77	7shkin S.V. (Slavnik)	2					1	1
78	Kuz'min M.E. (StDeus)	2					1	1
79	sangre P. (sangre)	1					1	1
80	Mikhal'kov K. (Ratta)	1					1	1
81	sam S.S. (sammm)	1					1	1
82	M (julia62)	1					1	1
83	Dadynsky M. (md5)	1					1	1
84	prosh (imaginary unit)	1					1	1
85	Toktosunov R. (Melig0)	1					1	1
86	Krasovskij E.A. (pegoopik)	5
87	Sh S. (junopark1)	4
88	Ivanov I.I. (markl)	3
89	Trofimov D.V. (bongO1896)	3
90	Minashkin A. (Wallrider)	2
91	Ushakov A.Y. (ushakov94)	2					ban	ban
92	Korolev (nibble)	2
93	Ivaschenko (Arifme3R)	2
94	Pankratev (CYROH)	2
95	Sarkis'yan G. (gennadi_s)	2
96	a A.A. (at20011)	2
97	pigov P.P. (mundil')	2
98	Sokolov (burmalda)	2
99	axmadddd A.S. (asdfasdfsdfsdjjjoooo)	2
100	Pan V. (pansql)	2
101	Blotskij P.A. (Pavlodar)	2
102	Ilyasova N.A. (Nazgul)	2
103	Knyazkova S.S. (sknyazkova)	2
104	Podolyakina A.A. (Anastasiiia_P)	2
105	Dubinin V.V. (dubovaya_roshcha)	2
106	Pachka S.K. (Pro100Boss)	2
107	Garaschenko S.D. (Serafim030)	2
108	Egorova K. (Ekkamil)	2
109	Abbasova A.V. (looonabayyy)	2
110	Koptel'tsev V. (selber)	1
111	Khizhnyak Ya.V. (ADosha)	1
112	white V.O. (ulcuber)	1
113	Stepanov K. (Crystal_0wl)	1
114	Filinov A. (Filin195)	1
115	Yagoda V.A. (dozerboozer)	1
116	Chachina E.M. (Lizz_Ch)	1
117	Kiryuschenko V.S. (Kira1998)	1					ban	ban
118	Levinskij A.V. (Stazhyor7777)	1
119	Savin A.S. (Slay30)	1
120	Arbatskaya (Arbatskaya)	1
121	Kopan A. (Kopan A.A.)	1
122	Akimov N.V. (Nikita A)	1					ban	ban
123	Skvortsov M. (DedMorozzzzzz)	1
124	Bykov (sky-shore)	1
125	Rodin (uoloki)	1
126	R. (Wra1th)	1
127	Dzhumaeva T.D. (PostgreSql04)	1
128	Skibin V.V. (SQL_vvs)	1
129	Zolotarev (Yura Zolotarev)	1
130	Lukutova A.A. (Lukutok)	1
131	Abramov V. (Privet ot Sashi Borovkova)	1
132	Lavrov (Shprot33)	1
133	Tsaryova Ya.A. (KooYan)	1
134	qq Q.Q. (stormxgod)	1
135	Afanas'ev A.E. (sevanchik12)	1					ban	ban
136	Rezvan (SilentLand33)	1
137	dens A. (alssz)	1
138	Alejnikov D.N. (gomelchanin123)	1
139	Val'degrejv G. (Anon21)	1
140	Serazetdinov I.R. (IldarSerazet)	1
141	Ganislamov (f74)	1
142	Zhilyakova M.-. (mwm_mwm)	1
143	Malevskaya I. (malevski)	1
144	Bratsykhina T.A. (tatavia25)	1
145	Radionov (fraster17)	1
146	Gnetetskaya P. (Polina_gn)	1
147	Artemev L. (Leonid S.)	1
148	Kagarmanov A. (wwww12)	1
149	Korbut V. (Vargengen)	1
150	Khan R.E. (SQL_Manace)	1
151	Amburtsev A.A. (AlexanderAmb)	1
152	Vasil'ev V. (Valeriy123)	1					ban	ban
153	Myuller P.D. (growlerrr)	1
154	Chadin F.I. (Fedor_ChD)	1
155	Lobanova K.V. (KristinaL)	1
156	Artebyakin M. (makcohmockba)	1
157	Sav H. (Master83_65)	1
158	Rodina Kh. (kris.poe)	1
159	s P.V. (Pullecino)	1
160	Abdullina E.F. (Abdullina El'vina)	1
161	Grechanik T.A. (Emrisa)	1
162	Sergei N. (SV123)	1
163	Karabanov A.E. (TLV4)	1
164	Chunosov D.D. (Dijkster)	1
165	Demessin Y. (Absolute_Batman_12343)	1
166	Krivets M.S. (Maria Krivets)	1
167	Vetchinov K.I. (OBAMA_BOY)	1
168	Nazarkov A. (tony160)	1
169	Casian A. (Casand1)	1
170	Sterkhov V. (bem0t27)	1
171	Egorov N. (Negorov)	1
172	Kolesnikov T. (jsypackman)	1
173	Ivannikov S.N. (Serhio57)	1
174	Alekseev R.O. (Ruslancho)	1
175	Chelovek (eurognome)	1
176	Sydykov J. (Johnybek)	1
177	Stepanov D.E. (qctor)	1
178	Idiyatov Ya.R. (Yannh011)	1
179	Ktraxxi (Ktraxxi)	1
180	Yanin V.V. (VladislavYanin)	1
181	Elovikov V.N. (Barrn1)	1
182	Dmitriev A.A. (Tupsimple)	1
183	Rusakovskaya A.V. (Mr.Beast22525)	1
184	Tkachenko A.D. (Avrora_tkd)	1
185	Smirnov I. (Zxcslop)	1
186	dim D. (mozliker)	1
187	Jasinskis V. (Prieterion)	1
188	Starshev I. (IgorStarshev)	1
189	Pe A. (Anna Serg)	1
190	Batkov G. (Batkov)	1
191	Patarov R.S. (Ruslan06)	1
192	Pekarskikh O.V. (Fobia666)	1
193	L (Mvombi)	1
194	Zinurova A.I. (Amina Zinurova)	1
195	Gumirov R.K. (rinatgumirov73)	1
196	Unregistered	25

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References