Today's statistics at "SQL Exercises"

April 13, 12:01 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	Chernykh V.E. (Chernykhkh)	1			5	5	9	12
2	Potemkin (Yazon_79)	1	2	8		3
3	Bredikhin M. (maxim_bredikhin)	1	1	32		3
4	Gusev A.O. (NowOrNever)	2	1	61		2
5	Odnokurtsev (AlFochino)	1	1	88		2
6	Lavrent'eva E.A. (Katya_!)	1					16	25
7	Sejdirakhimov N.E. (NurzatS)	3					15	18
8	Gasparyan A.S. (algs)	2					15	18
9	Sharapov D.Z. (DILIK132)	2					15	18
10	Belonogova N. (Nika12345678910)	2					15	18
11	Golden (cottonfieldowner)	2					15	18
12	Barmin I.A. (ilyatto)	1					ban	ban
13	Hilalowa (Malohat)	1					12	14
14	Medvedeva K. (karina_0809)	2					11	14
15	Gajratov (5_za_55)	2					10	13
16	musaliev B.B. (mbpride)	2					8	13
17	Semikin A.A. (Alexlone2048)	2					9	12
18	MAKHMUDOV O. (Videford)	1					9	12
19	Ibrohimova (serill)	1					8	11
20	nektov (Nekto95)	2					8	10
21	Tolstykh D.S. (saltykovadara)	2					6	9
22	Lobanova M.L. (lobanovamariya)	1					6	9
23	Sagatbaeva A. (Wellicober)	1					ban	ban
24	Kadrileev (bigsteppa)	3					5	7
25	Babaev R.R. (ChupaPupsik)	2					4	7
26	s S.S. (lelouchx)	1					4	7
27	Tautaviciute G. (greta.t)	1					4	6
28	Li O.D. (SuperLee)	2					5	5
29	gonzales P.2. (pablo.gonzales2007)	1					5	5
30	Bashkov D. (Dmitrij Bashkov)	4					4	5
31	Polosina (Anastaiia)	1					4	5
32	q (k000022211)	1					4	5
33	nyny (nyny26)	1					3	5
34	Lenin (Mamyumyu)	1					3	5
35	Bikbaev M.R. (qwertyuiop1212121212)	1					3	5
36	Berg (anjaq)	1					3	4
37	Mad'yarov (Ndrix)	1					2	4
38	deny (daniyaaa)	2					3	3
39	Paranin M. (kptp)	1					3	3
40	Kononov A.P. (koKS1k)	1					2	3
41	Konson (SQL-starter-pack)	1					2	3
42	Familiya (ewzwz1)	2					2	2
43	Ivanov I.I. (pasta123!@#)	1					2	2
44	Bukhmiller E.A. (shaybeach)	1					2	2
45	Kozyreva (Ottima)	3					1	2
46	Petrov (Steamboat)	2					1	2
47	Akhmetov (StrikerOk13)	1					1	2
48	Ryabov A. (Slavander)	1					1	2
49	Vershinina M. (marinaver4)	1					1	2
50	Shvetsov D.Sh. (DanechekSw)	1					1	2
51	Osokin K. (Povarovich)	1					1	2
52	Yakovleva E.V. (evelina027)	1					1	2
53	Bessonova V. (Veronica777)	1					1	2
54	Smirnov A.I. (zhsunchang)	1					1	2
55	Rizaev A.Sh. (MoonTR)	3					1	1
56	Wilkinson (Thomas_Wilk)	1					1	1
57	Prokof'ev A.O. (Artem123414)	1					1	1
58	Pan'shina A.G. (AlexashaKim)	1					1	1
59	Lyal'kova I.S. (Davydova)	1					1	1
60	Yakovleva T.O. (mala zeleni garoschkof')	1					1	1
61	No O. (TheQARAB)	1					1	1
62	Skorynina E.Yu. (skorynina222003)	1					1	1
63	Sarkis'yan G. (gennadi_s)	3
64	Komov S.M. (Komov S. M.)	3					ban	ban
65	Kurochkin P.A. (qwrqwr)	2
66	Koptel'tsev V. (selber)	2
67	Voronina K.M. (Kseniav_v)	2
68	Gretskikh M.S. (Greckih)	2
69	Kolesnikov S.O. (bulbasaurus)	2
70	Kaneva A.V. (s1llyh4mster)	2
71	Charukh I.K. (1brain)	2
72	Frost (lidjik)	2
73	Baral S.S. (dakudaddy)	2
74	Makarov I.A. (_Bkmz_)	1
75	Krasovskij E.A. (pegoopik)	1
76	Bajdaev D.A. (Dagva)	1
77	Ivanov (Grigorash)	1
78	Vishnevsky (Madcat75)	1
79	Petrov N.V. (Nick21)	1
80	Shunevich D. (dshunevich)	1
81	potompomenyayueslipotrebuet (netvetal)	1
82	Komarov A.N. (Shveda Saulya)	1
83	Sergeevich S. (SamOS)	1
84	Aleksandrova (al_vi_s)	1
85	Ershov S. (Detached)	1
86	Krylov (sergey_realm18)	1
87	Goj V.S. (namenlos)	1
88	Idrisov M. (Marik_80)	1
89	Bitsoev E.T. (Bisotti Eduard)	1
90	Pischasov A. (pischasovalex)	1
91	Kuznetsov K. (Uncle Bill)	1
92	Pashaev R.A. (Pashaev)	1
93	Narmetov T... (MrSverg)	1
94	mamkin koder (mamkin koder)	1
95	Panicheva V.D. (_Vika_)	1
96	Trushin I.I. (w1la2)	1
97	Fagundez A. (eevy)	1
98	Najik (Najik7)	1
99	Yagovkin I.A. (Mvsia)	1
100	Ryaposov (DaHuJlbl4)	1
101	Musabaliev (samiro)	1
102	Sigacheva D.D. (dosh1k)	1
103	Praskov'in S.D. (Savel_ke)	1
104	Nikolaev A.N. (n1kolaevs)	1
105	R. (Wra1th)	1
106	Krasnova M.A. (Margo_sto)	1
107	ASI (asi_sql)	1
108	Lysykh V.K. (Usilitel')	1
109	Ivanov M.A. (Maksim__)	1
110	Velichenkov D.A. (Galotane)	1					ban	ban
111	Petrova (Ache1900)	1
112	Vasin (sunkin)	1
113	Vakulko A.V. (VAlexandrV)	1
114	Batuev M.R. (Vemoder)	1
115	Makhmutshina K. (Kamilala)	1
116	Zmejkova E. (ElenaZm)	1
117	Yushina A.N. (Student63)	1
118	Galeev (TryToFindAwork6thYear)	1
119	Nanava D.B. (1ucky_Num83r_13)	1					ban	ban
120	Gazimov M.R. (Mvr.one)	1
121	Tulenov N.K. (NuleN)	1					ban	ban
122	Rogachev L. (leonid19101110)	1
123	Slugin E.E. (rawelaw)	1
124	Kan E.V. (e_kan)	1
125	Kuzmina (gehtenplanet)	1
126	Odintsov I.A. (PlayFulBear1337)	1
127	Makarova A.A. (Pinkochka)	1
128	Chernova A.S. (fubarbert)	1
129	Kovalev A.A. (godota)	1
130	Dana D.D. (danochka128)	1
131	Amankos A... (alkuatA)	1
132	Alexeyev (Nickfan)	1
133	Utkin S.A. (Aethel)	1
134	Soryu A.L. (RemiliaScarlet3)	1
135	Myasnikova M.A. (weq_uty)	1
136	T (aksined888)	1
137	Musaeva S. (Saidochka)	1
138	Lyubimenko E.V. (lenwa)	1
139	Gul'tyaev A.A. (Maridats)	1
140	Ivanov N.D. (Praeclar)	1
141	Tukeshev U.K. (Ulan Tukeshev)	1
142	Zhurbinskij R.I. (ramromazes)	1
143	Pod (n1d1)	1
144	Paella (Aliero)	1
145	Swartz A.A. (arnold265)	1
146	Boban (homyak_dzungarik)	1
147	Ivanov P.S. (tolstyj348)	1
148	Popil R.A. (popilroman)	1
149	Abdulganiev (echpochmak2k)	1
150	deathlimit1 D.D. (deathlimit33)	1
151	Mikheeva P. (Polimik)	1
152	marinin G. (trolleybus_driver)	1
153	Unregistered	28

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References