Today's statistics at "SQL Exercises"

August 19, 14:45 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	Bykov (sky-shore)	1			3	3
2	Bochkova (PunDora)	1			3	3
3	Tsybin A.V. (magicdragon)	1	1	24		2
4	Pokrovskij A.A. (Sanyok05)	1	1	3		2
5	Siamionau V.S. (pe4enjush)	1					15	19
6	Bocharnikova A.A. (Aleena22)	3					15	18
7	Endal'tseva S.E. (dixomia)	1					13	16
8	Kropachev E.E. (JackZzzon)	1					13	16
9	Korolyov V.V. (CHOTKIY)	1					13	15
10	Zoo (zookeeper)	1					12	13
11	Gar'kusha (ivan_3337)	1					10	12
12	Kalinkina M.K. (Kalinka_Ma)	1					7	12
13	awd W.A. (EldarOmurzakov)	2					8	11
14	M (adilyam)	3					7	11
15	Golydbina K.A. (kk021004)	1					5	9
16	Sidorenko (Junior_Explorer)	1					6	8
17	A (JohnnyData)	1					5	8
18	shende P.A. (pranav_07)	3					6	7
19	Pathak A. (ananya221107)	2					ban	ban
20	Nasonkova (Svetlnas)	1					6	7
21	Korionova P.D. (Karina_fox_777)	1					6	7
22	Martirosyan M. (Marrty)	1					6	7
23	Borodin A. (Rignar)	1					6	7
24	Pankova A. (AnnaPankova)	2					5	7
25	Tarasova M.A. (milana88)	1					4	7
26	Kulikov A.Yu. (Ondrata)	1					4	6
27	Levin Yu.A. (pdestroyer)	1					4	6
28	Kupriyanova P.A. (@poluchku)	2					3	6
29	Kazantsev V.D. (kentiko_0)	2					ban	ban
30	Berseneva T.M. (Bersa_3785)	1					3	6
31	Izotikova A.A. (aosoxo)	2					5	5
32	Spirina T.S. (spirina-ts)	1					5	5
33	Vachikova I. (Piramidka)	1					5	5
34	Galitskiy V.V. (Salai)	1					5	5
35	Saukin U. (novichok_PA)	1					5	5
36	Malo A. (meyhom_2)	1					4	5
37	Kanunnikov P.V. (Inoj777)	1					3	5
38	Shakhova M. (maydaymeow)	1					3	5
39	Saryglar (Daryma)	1					3	5
40	KhOZYaINOVA I.N. (InKh)	1					3	5
41	Zubkov D. (Dm54)	1					2	5
42	Porshukov N.Y. (Nik322)	1					4	4
43	_ _._. (rrl)	1					4	4
44	Akimova E.N. (Katrin_A91)	1					3	4
45	Waghare A.S. (Aatharva)	1					3	4
46	Sadomtsev A. (Artemucho)	1					3	4
47	cedar (cedar_stone)	1					3	4
48	Ibragimov (RobBot1337)	1					3	4
49	Veshnyakova (DanaVesh55)	2					3	3
50	Chapleeva A.M. (chapllucky)	1					3	3
51	Borisov D.R. (Dmitry.Bo)	2					2	3
52	Kuriga T.A. (eco.kuriga)	1					2	3
53	penkova (sonya3)	1					2	3
54	Lyakh (LinaL_)	1					2	3
55	doka T.Z. (sae6)	1					2	3
56	Korolev R.V. (zouker)	2					1	3
57	Vakulko A.V. (VAlexandrV)	1					1	3
58	Babushki S. (gnomz)	2					2	2
59	Zlatoust A. (Anatoly24)	1					2	2
60	Krupin M.A. (ma.krupin)	1					2	2
61	lamer (-lamer-)	1					2	2
62	Pokshin V. (Optimiss58)	1					2	2
63	Zyuzyupupuk P.K. (@mutagen00)	3					1	2
64	Sultanayeva (Lowlights)	2					1	2
65	Langlits (milkeyway)	2					ban	ban
66	Kumar M. (waifo)	1					1	2
67	Savenko (olalasavenko)	1					1	2
68	Pegov S.S. (Sergey_Pegov)	1					1	2
69	Gasimov (Beyond9)	1					1	2
70	Gornostaev V.V. (VadimGorn)	1					1	2
71	Lcdma (LCDM138)	1					1	2
72	Chumachenko N. (Nadia_Chumachenko)	1					1	2
73	Mark D.D. (Backstrickboy)	2					1	1
74	Kurakin (billir)	1					1	1
75	kkk K.K. (l_sql_god_l)	1					1	1
76	Fyodorov I.P. (Kega)	1					1	1
77	Ivanov (Ginger12)	1					1	1
78	KA (idounderstand)	1					1	1
79	Leschenko (Verochka_21)	3
80	vvvv (vvvvd)	3
81	Petrova K.A. (Korollina234)	3
82	Shibaev (saah)	2
83	Voronov D. (Elnov.70)	2
84	Frolov K.A. (Murderface_)	2
85	Belyakov (ilikedarkblue)	2
86	Nakonechnaya V.S. (Zarela)	2
87	Kurochkin P.A. (qwrqwr)	1
88	Koptel'tsev V. (selber)	1
89	Pol (Yaroslav Poltavskij)	1
90	Sergeev V. (32b)	1
91	Gr L. (Metalize)	1
92	Abdulmanapov A. (Dvarik)	1
93	Trdeszha (trdeszhka)	1
94	Simonyan D. (Nnumby)	1
95	Yakubova (Alinaaaaa)	1
96	Minyurov E. (m.evgeniy)	1
97	Verem'ev (Hotkey)	1
98	Ulybin (tanderug)	1
99	Lomakin A.I. (goregrinde)	1
100	Tsay S. (Sergey Ts.)	1
101	Komarov A.N. (Shveda Saulya)	1
102	Khabibullin B. (whiteb)	1
103	Noskov R.E. (Angelorn)	1
104	Ti (Ost2020)	1
105	Zavalyuk A. (Kolbasyatinz)	1
106	Makarov S.M. (MakarovSG)	1
107	Piotka V. (Pilotich)	1					ban	ban
108	Ulybyshev A.A. (Alex__Lime)	1
109	xiao (xiao shi)	1
110	Rustamova S.R. (Alexrusso2003)	1
111	Chvikova A.M. (Chvikova)	1
112	Terekhov I.E. (foxboy)	1
113	Silushina (Silaa)	1
114	Nuradinov U. (urasan)	1
115	Zajnutdinov R.R. (Allezzio)	1
116	A V.V. (Aver999)	1
117	Strunnikova K.E. (WasabiFox)	1					ban	ban
118	Sarkis'yan G. (gennadi_s)	1
119	ss A.S. (SashaSS)	1
120	Skokov B.S. (leks$$)	1
121	Bazargarmaev A.Ch. (Amurchick)	1
122	Konogorskij L.E. (konogorsky Leo)	1
123	F (coslicoc)	1
124	Raimzhan uulu Z.R. (Zhakshylyk)	1
125	Surkov A.V. (ElatedM1nd)	1
126	Kondrat'ev A.D. (Drowfard34)	1
127	Odegov A.I. (KovroLitik)	1
128	R. (Wra1th)	1
129	AKI C. (caroline_py)	1
130	Muratov D.A. (Enovostuck)	1
131	Lysykh V.K. (Usilitel')	1
132	DEMYANENKA (SVETLANA1311)	1					ban	ban
133	Novitskaya A.A. (arinanow)	1					ban	ban
134	Velichenkov D.A. (Galotane)	1					ban	ban
135	Abramov V. (Ichigo Kurosaki)	1
136	Gladkikh V.A. (vgladkih)	1
137	Khaziev (jiesoryb)	1					ban	ban
138	Stytsyuk N. (natalia19930420)	1
139	Zavodova (catherine_zavodova)	1
140	Some B. (SilentDragon)	1
141	Pavlinov D. (danil_panamera)	1					ban	ban
142	Zabavnikova U.A. (ulyazabavnikova)	1
143	Ponomarev M.P. (MatveyF)	1
144	Pushkarev S. (PSV_n)	1
145	Sedakov M. (gamigami)	1
146	Savchenko V.P. (Vladislav11111)	1
147	Nhane S.M. (Sujal)	1
148	Burtonov A.V. (tak to)	1					ban	ban
149	- V. (Varabi)	1
150	Voronets A.Y. (AvdeyVoronets)	1
151	Akopyan K.G. (Karlen)	1
152	Tienka E. (Eva.tienca)	1
153	Zlomanova M. (mzlomanova)	1
154	a A.A. (rdctfvygbuhjnk)	1
155	Filippov N. (Niik0laii)	1
156	Galanov V.Y. (RedRitter)	1
157	Serbul T. (horirisasimi)	1
158	Mathematicienne (Mathematicien)	1
159	SecondName (enisey_n)	1					ban	ban
160	Chvanova E.S. (Brennivin)	1
161	Istomin M.F. (MichaelIst)	1
162	Kudryavtsev V.O. (VladKudr)	1
163	tikiriki1 (tikiriki)	1
164	Zhukov (0xrobotics)	1
165	K A.G. (SQLHARD)	1
166	Kapanin D.A. (777flint777)	1
167	Misevich (Lutien)	1
168	Krasnousov M.K. (rapsodm)	1
169	Panteleeva A.S. (sy4)	1
170	Salakhova G.F. (Gulzzzya)	1
171	Maznin K.V. (Zik-zak)	1
172	Gruzdov D.A. (gruzdik_1)	1
173	Abilmazhitova (pandur)	1
174	Unregistered	26

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References