Today's statistics at "SQL Exercises"

August 21, 19:43 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	BlazeBio B.B. (BlazeBio)	1	3	3		4
2	Sarkis'yan G. (gennadi_s)	2	1	206		4
3	Frolov K.A. (Murderface_)	1	1	24	1	3
4	Mal'tseva V.A. (ctoriavick1)	1			2	2
5	Shipilovskikh L.M. (ladashipm0121101)	1			1	1
6	Babenko D.V. (Agrofos)	2					20	27
7	Konogorskij L.E. (konogorsky Leo)	2					14	24
8	Kustova V. (emilygrossman)	1					12	21
9	jadgfldsgf (jadgfldsgf)	1					12	20
10	Koala2 (Koala2)	1					15	19
11	Kishkurno R.A. (Dyga)	2					10	15
12	B D. (bzldm)	2					10	13
13	Zhur V. (mrvaroz)	3					9	11
14	Isakov (Isak)	1					9	11
15	Khuchraev A. (daydreamer)	1					9	11
16	KhOZYaINOVA I.N. (InKh)	2					6	11
17	lisa (eliswwu)	1					7	10
18	Klishin (F P)	2					7	9
19	Naor (ruththur)	1					7	9
20	libert J. (Igorrr33443)	1					7	9
21	Zozulya P.A. (Polechkaaa)	1					5	9
22	Murzina A.I. (riarinai)	2					6	7
23	Korionova P.D. (Karina_fox_777)	1					6	7
24	Ermolaev (Ermak05)	1					6	7
25	Petrov I.O. (Pucknull)	1					6	7
26	Nesterov D.A. (saha909)	1					6	7
27	Bogdashov Ya. (shadyjeff)	1					6	7
28	Olamiai (Nikita12367)	1					5	7
29	Pelov O.I. (Jk212356)	1					4	7
30	Soprano D.M. (DonSopranovich)	1					5	6
31	Bublikov A.G. (geterozis22)	1					5	6
32	Akimova E.N. (Katrin_A91)	2					4	6
33	edmond2 (edmond2)	2					4	6
34	Borisov D.R. (Dmitry.Bo)	2					4	6
35	Domejko I.A. (Domejko)	1					4	6
36	Kulikov A.Yu. (Ondrata)	1					3	6
37	Yusupova O. (Iusupova)	1					3	6
38	Z A. (panter2)	2					5	5
39	Khabibullin A.R. (Aleksandr_Kh)	1					5	5
40	Reshetnik N.V. (Z3l3nyi)	1					5	5
41	Kadiev (Watermelon king)	1					3	5
42	Leonova A.A. (AngeLeo)	3					4	4
43	Sip J.T. (jtsip)	2					4	4
44	Pupkin K. (catpupkin)	1					3	4
45	Denisov (Kot_-_)	1					3	4
46	Vozdigan A.A. (KumaRYo)	1					2	4
47	Guseinov A. (Ali_G)	1					2	4
48	Zav'yalkina S. (Sveta17vr)	1					2	4
49	Lyakh (LinaL_)	1					2	4
50	Klyavlin V. (aurq)	1					2	4
51	M (adilyam)	1					2	4
52	Fyodorov I.P. (Kega)	1					3	3
53	Lcdma (LCDM138)	2					2	3
54	Martirosyan M. (Marrty)	2					2	3
55	Prudaeva N.A. (Pavlova.nat.an)	1					2	3
56	Chernyshev (Nikitacher)	1					2	3
57	Zubkov D. (Dm54)	2					1	3
58	Brajnin S.O. (brusha)	1					2	2
59	Kupriyanova P.A. (@poluchku)	1					2	2
60	sdfg (eflampypopa1)	1					2	2
61	Kameneva (kristachak)	2					1	2
62	CHARNIAK P. (bitoma)	2					1	2
63	lamer (-lamer-)	2					1	2
64	Shagalov O.L. (TTC)	1					1	2
65	Kitaev K.I. (Kostas1234)	1					1	2
66	Avdeev A. (TripleA3110)	1					1	2
67	Raupova N.B. (Nizukuba)	1					1	2
68	Korolev R.V. (zouker)	1					1	2
69	Vakulko A.V. (VAlexandrV)	1					1	2
70	Stytsyuk N. (natalia19930420)	1					1	2
71	Ivanova (nahi1)	1					1	2
72	Evgen'ev (gek_c)	1					1	2
73	Zabavnikova U.A. (ulyazabavnikova)	1					1	2
74	Pushkarev S. (PSV_n)	1					1	2
75	Kurakin (billir)	1					1	2
76	Ivanov R.A. (RoGad)	1					1	2
77	Ivanov (Ginger12)	1					1	2
78	Saukin U. (novichok_PA)	1					1	2
79	Bagrova N. (Nata1234567)	1					1	2
80	Muratov D.A. (Enovostuck)	2					1	1
81	Kuznetsova S.N. (Womanidze)	2					1	1
82	Isheev (KokosB)	2					1	1
83	YV Y.Y. (YVYVYV)	2					1	1
84	Ibo K. (Kemchik)	1					1	1
85	Malo A. (meyhom_2)	1					1	1
86	Puhovic N. (poohski)	1					1	1
87	Yakimova E.A. (lenxena)	1					1	1
88	Koptel'tsev V. (selber)	5
89	Shibaev (saah)	2
90	Krupin P.A. (PAVEL1990)	2
91	Ivanov I.I. (Fedoseevv)	2					ban	ban
92	Ponomarev V.K. (Vladidasss)	2
93	Kudryavtsev V.O. (VladKudr)	2
94	Barabanov (lesha91)	2
95	Salikhova (salixova)	2
96	Mmm A. (AinSophAur88)	2
97	Somsikov D. (DM_Vanitas)	2
98	mur I.S. (barzel83)	1
99	Varakin I.E. (vanesik)	1
100	Kostomarov A.V. (al29)	1
101	Sid (cyrus123)	1					ban	ban
102	Kumar M. (waifo)	1
103	Likhov B.K. (Vnimatel'nyj)	1
104	kaladandi V.K. (vamshi krishna)	1
105	Sergeev V. (32b)	1
106	Skorobogatyj D.V. (Skoryj)	1
107	Zh (SaidaZh)	1
108	Kuznetsov A.A. (Bakterium)	1
109	Semenikhin D.A. (Gennadij Smirnov)	1					ban	ban
110	Demin K.A. (mao23)	1
111	eqweasdd (alexa123123gth)	1
112	Zolin P. (heliocopter3)	1
113	Oktamov N.A. (Nurdaulet99)	1
114	Noskov R.E. (Angelorn)	1
115	Bykonya A.A. (abykonya)	1
116	Kazhuhovskiy (till123)	1
117	Makarov S.M. (MakarovSG)	1
118	Mironova O. (lesya8635)	1
119	Strazh (melissandra)	1
120	Ganiullin A.M. (Zer7or)	1
121	Dab D.D. (plintus)	1
122	Smirnov A.S. (parazorro)	1
123	Chvikova A.M. (Chvikova)	1
124	Alekseeva (Anastasiya_Al)	1
125	fyva F.Y. (pidogog)	1
126	Chumachenko D.A. (Darya_2024)	1
127	ss A.S. (SashaSS)	1
128	Skokov B.S. (leks$$)	1
129	Rodin (uoloki)	1
130	Popov G. (Nimble45)	1
131	R. (Wra1th)	1
132	Tsimerman (Ilyac2001)	1
133	Aks (Nastya12344332)	1
134	Burenkov O.G. (Duncans Soffee)	1
135	Sad A.S. (ssaqerke)	1
136	Korolkovs (fkorolkov2)	1
137	Lysykh V.K. (Usilitel')	1
138	S (sergeenko@phystech.edu)	1					ban	ban
139	Akameeva S.V. (SVA1)	1
140	Velichenkov D.A. (Galotane)	1					ban	ban
141	Nata (legenda22222)	1
142	Krikunov V.V. (Krikunov_Vitalik)	1
143	Bogatyrev N.V. (BNV2873)	1					ban	ban
144	qweasdasd C.C. (cringeaaa)	1
145	K (Levanlomg)	1
146	Zyuzyupupuk P.K. (@mutagen00)	1
147	Ponomarev M.P. (MatveyF)	1
148	l (loww)	1
149	Kazantsev V.D. (kentiko_0)	1					ban	ban
150	Sayyan V.R. (Vah_666)	1
151	Burtonov A.V. (tak to)	1					ban	ban
152	Strilenko (Liamorte)	1
153	Filippov D.A. (shketik)	1
154	Zhopkin (Vanek_destroyer)	1
155	pushkarev V.S. (tt3dg)	1
156	Ageev (daniljson)	1
157	Bespalov (proWorker)	1
158	Pupkin (ChK2026)	1
159	Babushki S. (gnomz)	1
160	Shapiro D. (xx_Da_Sha_xx)	1
161	K A.G. (SQLHARD)	1
162	Kropachev E.E. (JackZzzon)	1
163	Bonjovi (bomjour111)	1
164	Surname (Void_107)	1					ban	ban
165	Kurolyonok K. (KQnok)	1
166	Kononova A.S. (anseko)	1
167	Laferchuk (Kvakushhka)	1
168	Deryushev O.V. (Oleggg222)	1
169	Grankina (bebrochka 123)	1
170	Kovaleva V.B. (Victoriaaa_kov)	1
171	Zajchikova M.S. (Maria8811)	1
172	Akhaladze I. (Gurieli)	1
173	lalalelnaya L.L. (lalalel)	1
174	l3m1r A.O. (l3m1r)	1
175	Unregistered	46

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References