Today's statistics at "SQL Exercises"

February 15, 14:41 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	Kamenev I.A. (Kamenev88)	1	3	12		3
2	Doroshevich A.R. (Alexei2019)	1			3	3	4	7
3	Mart M.A. (Raf_ael_ka)	1			2	2
4	Kurakina M.A. (MAryku1989)	1			2	2
5	Matushkin S.A. (SergMatushkin)	2					56	87
6	Erbatyr A.E. (aigerim1406)	1					ban	ban
7	Avezov B. (Baqosh)	2					15	25
8	Toleubay S.T. (sandugash Toleubay)	1					15	25
9	idiris N.R. (NurzhanI)	1					12	20
10	Rotar' Yu.R. (YuriyRotar)	1					14	17
11	Kuznetsov E.A. (Egor A. Kuznetsov)	1					10	17
12	Grinenko I.S. (grenka9)	1					10	17
13	Alpeis A.Z. (Aruzhan Alpeis)	1					10	16
14	Amangeldiuly A. (CDF)	1					ban	ban
15	Tkachenko M.V. (tkachm-1)	1					10	13
16	Kazanbaj O.Zh. (Oren)	1					10	13
17	Klimenko S.R. (sofiya klimenko)	1					10	13
18	Kadochnikov (Kadochnikov Andrei)	4					8	13
19	Kazbek A. (annelya)	1					9	12
20	Lyubimova A.V. (nastyana)	1					8	12
21	Shebnev (si.shebnev)	1					7	12
22	Tatarinov (Yujiro)	2					6	7
23	Mel'nikov E.A. (Evgeniy_2.0)	1					6	7
24	Dalabayeva K. (kaamixxt)	1					5	7
25	Baktiyarr D. (D1naraaa)	1					5	7
26	Lauda H. (r3isenfe1d)	1					4	7
27	Zajniev L.S. (Leonj5)	1					4	7
28	Trushnikov M.N. (chajan)	1					4	6
29	Katya (mccat)	1					4	6
30	Pavlova A.M. (alinapam)	1					3	6
31	Tolmach (InaYa)	1					5	5
32	Kireeva N. (natashaknd)	1					5	5
33	Generalova P.A. (plgnr)	1					4	5
34	Chursin S. (ser_chur)	1					3	5
35	Bityutskij S.A. (HaNsOo)	3					ban	ban
36	Egupov A.S. (Fekt0r)	1					2	4
37	Goldobin E.G. (prm259)	1					2	4
38	Akebek M. (Miras38097)	1					2	4
39	Khajrullina R.A. (regasta)	1					2	4
40	Efremova (eda_shhha)	1					2	4
41	Belikov (lagruzdivo)	1					2	4
42	Startsev (sTaR!nA1402)	1					3	3
43	Ryan R.R. (Ryan3111)	1					2	3
44	Bakanov R.O. (bakanovro)	1					2	3
45	Sal'nikov A.M. (Arturchik123321)	1					2	3
46	qh0twtsr90uo (Xxxyxyyyx)	1					1	3
47	Bhonde (manaswiii)	1					2	2
48	Auezova (Soul66)	1					2	2
49	Polyakova (24plkv19)	3					1	2
50	Matroskin (Kot_Barsik)	1					1	2
51	shch (maryshch)	1					1	2
52	Gusev (superguzlik3228)	1					1	2
53	Levin E.A. (egor_oracle)	1					1	2
54	Zyrina N.A. (PapayaBg)	1					1	2
55	Krasnolobov A.A. (supporter1101)	1					1	2
56	Ovchinnikov V. (ZHOAS)	1					1	2
57	Schapov (__sql__)	1					1	2
58	Zambalaeva M.V. (Maria642)	1					1	2
59	Mukhamedzhanov R.M. (Balmain)	1					1	2
60	Kharitonov (VerBS)	1					1	2
61	Koshelev (Vakera_Kosh)	1					1	2
62	Telimisov (MEJIAHXOJIuK)	2					1	1
63	asdf A.A. (Ownage)	1					1	1
64	(Ya Tana)	1					1	1
65	Malakhov (Sivord)	1					1	1
66	Kulik A.L. (kulika)	1					1	1
67	Grigor'eva Ya.M. (yana00)	1					1	1
68	Pelepelin A. (ToniMekh)	1					1	1
69	Bashkin N. (bashkinnaksim)	1					1	1
70	Osipov N.A. (Guest_1)	1					1	1
71	Quzmin (dmitryQu)	1					1	1
72	Silyutin A. (koi199)	1					1	1
73	Spanov M. (danteSql9518)	3
74	Krepostnoy (Mordast1)	2
75	Sarkis'yan G. (gennadi_s)	2
76	R. (Wra1th)	2
77	O (blastfm)	2
78	Appala B.G. (BrahmanandaGupta)	2
79	Kurochkin P.A. (qwrqwr)	1
80	Bryukvina O.Yu. (Findus)	1					ban	ban
81	Koptel'tsev V. (selber)	1
82	Sil'van (silvr)	1
83	Larca L. (Larca)	1
84	Doronin D. (dimas91)	1
85	Chizhov (RedGreenPower)	1
86	Ol'shanetskij S. (SLAV2019)	1
87	Yurchenko A. (y.aleksandr89)	1
88	Jackback J.B. (Jack 99)	1
89	Kotov (Kotov E.V.)	1
90	Shamaeva M.E. (shamaeva)	1
91	Ignotus E. (uievgo)	1
92	Norboyev S.B. (Shoxrux___)	1
93	petrov S.I. (Morriel)	1
94	Dunaev K. (Scrollz)	1
95	Chmil' E.V. (CoreyTaylorSwift)	1					ban	ban
96	Kirillov (askirillov)	1
97	Aleksandrov I.O. (testik101)	1
98	Filippov T.S. (Barbarbossa)	1
99	Pestryakov Yu. (umbrash@)	1
100	Serebrov Y.Y. (Eugene_Ser)	1
101	12 1.1. (Zlorango)	1
102	Scherbinskij (Glebrx)	1
103	Isakov V.I. (VladIs1994)	1
104	Pletnikov K.V. (OLEG_228)	1
105	Ivanov (userTest1)	1
106	TO R.V. (Translate)	1
107	Kharin A. (burita)	1
108	Mazanov (Cepnoj)	1
109	Khrustaleva (kultuh)	1
110	Komov S.M. (Komov S. M.)	1					ban	ban
111	Ganiev O.S. (Osman5)	1
112	Skibin V.V. (SQL_vvs)	1
113	Lysykh V.K. (Usilitel')	1
114	A M.A. (Maksimm2010)	1
115	Kolesnikov S.O. (bulbasaurus)	1
116	Oginov D.M. (Wereteno)	1
117	Kolesnikov A.M. (Serafil1209)	1
118	Mishkovich T. (RRBlack)	1
119	Pushkin A.S. (Pushkin_Isip)	1
120	Khairov R.R. (Togg)	1
121	Abduragim I.I. (c14sh)	1
122	Babykina O.V. (olga_mv)	1
123	Lolenko N.V. (crysis1812)	1
124	Grechka I.V. (Pr0gGeR1337)	1
125	Umnov A.A. (AndoUm)	1
126	Lashina (babaika2)	1
127	Kolpaschikova (ruflufy)	1
128	Puchkova V.M. (lllerkinssss+-)	1
129	Mukhametzhan M.A. (Miras2181)	1
130	Krayushkin A.V. (Shtemp)	1
131	Sarsenova G.Z. (scally xanny)	1					ban	ban
132	Saipov S.M. (Saidbek)	1					ban	ban
133	Golubev A.P. (GlobusAfrika)	1
134	Can (svetonik)	1
135	Kan (maxim78)	1
136	Videvich A.P. (loptym)	1
137	Dremlyuga A.E. (Arina Dremlyuga)	1
138	Bagin A. (ahito80)	1
139	Zyryanov S. (semzyr)	1
140	Yakunin A.A. (-swear)	1
141	Kobzar (luffy7653)	1
142	Bocharova S.M. (Salazail)	1
143	Dim A. (Alsu2626)	1
144	Krupin D.M. (K777d)	1
145	Mandzhieva A. (aimandzhi)	1
146	Unregistered	14

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References