Today's statistics at "SQL Exercises"

March 07, 16:05 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	. .... (reyq)	1			6	6
2	Lysenko O. (Oleg15062025)	1	3	14		3
3	Badakh'yan S. (wamp.j)	1	2	7		3
4	Borschovetskij I.N. (Igor2.0)	1	1	9		2
5	Petrov Y. (YuriPetrov)	1			1	2
6	Odnokurtsev (AlFochino)	1	1	50		1
7	Dorofeev V.A. (FLAG_GUN_UT3)	2					62	108
8	Potapova A.A. (itwabi)	1					ban	ban
9	Franu F.N. (Franu)	1					15	26
10	Men'shova V.A. (Valentina Men'shova)	1					15	26
11	Makarov N.A. (neRYDZYA)	1					15	25
12	Persen A. (ArsenPersen)	4					ban	ban
13	Kudryavtsev A.S. (carefully)	1					ban	ban
14	Gorkov (narr3309)	1					ban	ban
15	Gorbunov G.A. (RaM1cK)	1					15	23
16	Rozhnov I.G. (IvanRozhnov)	1					15	18
17	Kostenko S.P. (gentelmen1)	1					ban	ban
18	Byulbyulov R.A. (royal364)	2					9	16
19	fdsfsdfdsfd (fjksodjfosidjiro)	2					ban	ban
20	Minnigaliev D.D. (damir_dm)	1					9	13
21	burakov (burakov dimqa)	2					8	13
22	Garaev (Romiith)	2					8	13
23	Nikolaev S.I. (Hanayama Kaoru)	1					8	13
24	Talgat A.B. (Altux)	1					ban	ban
25	Urazmetova (ElzaU)	1					8	11
26	Kashin A.D. (Alkashh)	1					8	9
27	tykva P. (soda)	1					6	9
28	Bokov A. (vaiforic)	2					5	9
29	Bal'druev R.S. (wdfromclash)	1					7	8
30	Kondrashova N.E. (Natalia24111983)	1					4	8
31	Kuzin I.M. (baba_chai)	1					4	8
32	RIn R.R. (Rin_yatteno)	1					4	8
33	Solovyev S. (serjke)	1					6	7
34	Latochkina A.V. (annl03)	1					6	7
35	Shestyrev P. (St1k)	1					6	7
36	Uzhakhova (valllllles)	1					5	7
37	Vasechko K.Ya. (Memnik)	1					5	7
38	Zhuk P. (enjoi23)	1					4	7
39	telagisov D.D. (SAVER454)	1					4	7
40	Filyushkina K.A. (ksyusha_filyusha1)	1					4	7
41	Repchenko V.S. (_vitalik_)	1					4	7
42	Korsakov (Wallen)	3					2	7
43	Kozyreva (Ottima)	2					6	6
44	Kobyakova D.A. (DiDi000)	1					4	6
45	Kartavenko G.O. (Necrosea)	1					4	6
46	Mavrodi P.M. (pavel_mavrodi)	2					3	6
47	Miroslav (resop18)	1					3	6
48	Gusev A.O. (NowOrNever)	2					2	6
49	Plahov (plahov_sasha)	2					5	5
50	Davlatov I.M. (Leiurus)	2					3	5
51	Pakkanen (Antti_Pakkanen)	1					3	5
52	Voronov (raven_bookeater)	1					3	5
53	hhhhh3 G.H. (hjkjjjkk3)	3					4	4
54	Nov (IronMaiden)	1					4	4
55	Lipartia V. (vv_lipartia)	1					3	4
56	Tsarapkina E. (carap72)	1					3	4
57	Gorodnov G.A. (george_ml_makaka)	1					2	4
58	Chursin S. (ser_chur)	1					2	4
59	Aksenov (NomenChok)	1					2	4
60	Egorov (Anker2)	1					2	4
61	Grebe P. (p1kers)	1					3	3
62	aidarkhan I. (Imangali0404)	1					3	3
63	Mescheryakov A.V. (Anatolii-198h4vh9)	1					3	3
64	Grozovskij F.M. (fgrozovskiy)	1					2	3
65	Gladysheva M. (KittyZebra)	2					2	2
66	Potemkina O.V. (Oshaosha)	1					2	2
67	Antonova M.A. (gutalinovna)	1					2	2
68	Kolbasenko D. (cooler324)	1					2	2
69	Sokolik I.A. (sokolik2014)	1					2	2
70	Chaplygin A. (Reyvoker12)	1					2	2
71	Darkov (Sxrry)	3					1	2
72	Mamedov (gidMAD)	1					1	2
73	Matroskin (Kot_Barsik)	1					1	2
74	Klyavlin V.S. (laliawe)	1					1	2
75	Kassym-Ashim G. (guldana2007)	1					1	2
76	Afanevich E. (Ketra)	1					1	2
77	Malakhov (dimmal)	1					ban	ban
78	Chetverikov D.A. (zzwwaann)	1					1	2
79	Otradnov (Sdn19012026)	1					1	2
80	Konstantinov A.E. (Kalindell)	1					1	2
81	Grechishnikova L.M. (Lidiya0512)	1					1	2
82	Catherine (Cat_05032026)	1					1	2
83	Mikhajlova I. (opiumbit)	2					1	1
84	kkya V.N. (KJdsaf)	2					1	1
85	1 1.1. (grizzl)	2					1	1
86	dollycons (con99009)	1					1	1
87	Baryshev D.Yu. (dmitrieq)	1					1	1
88	Matytsina (Vetra)	1					1	1
89	Mmm I.M. (Bcc1177)	1					1	1
90	Baklanov (pivovodka)	1					1	1
91	Berkut D. (DmitriyBerkut)	1					1	1
92	Amangeldiuly A. (CDF)	4					ban	ban
93	Kazagasheva V.M. (rrosemary)	3					ban	ban
94	Kamza A. (drgibjosh)	3
95	Mamutov (meridian99)	3
96	Sagidulin R. (bashrustam7)	3
97	Vinogradova S.M. (Tigra1)	2
98	Proskurin A.D. (alladdin)	2
99	Rodina I.A. (IrinaDL)	2					ban	ban
100	Targyn M.A. (M4N_T4)	2					ban	ban
101	Amir (Letede_HIts)	2
102	7779857415623 (7779857415623)	2					ban	ban
103	Grinevich E.A. (Flaze Flower)	2
104	Kramanovich K. (mortalcoil)	2
105	Shibaev (saah)	1
106	Krasovskij E.A. (pegoopik)	1
107	Plahov (systemofadown)	1
108	Bizyaev A.A. (viva_la_666)	1
109	Babushkin (Nafanuil)	1
110	Popova (m2a3)	1
111	Dolidze A. (alexandra_dolidze)	1
112	Maksimov P.A. (Gibbson89)	1
113	Gorshkov Yu.V. (yugorshkov)	1
114	Pogalov V.A. (Skat1113)	1
115	Roschin A.M. (Alexendero)	1
116	Kazachenko K. (Voice1081)	1
117	Chucheev K.N. (kira_perec)	1
118	Kvardakov M. (GosuMax)	1
119	Karpushenko A.P. (fenris06)	1
120	Bulyga E.A. (bulyga.ekaterina)	1
121	Ivanov (aesthratio)	1
122	Reshetnyak S.V. (snowballO_o)	1					ban	ban
123	Ivanov (userTest1)	1
124	Odegov A.I. (KovroLitik)	1
125	R. (Wra1th)	1
126	Bondarenko K.M. (bondig76)	1
127	Doroshevich A.R. (Alexei2019)	1
128	Komov S.M. (Komov S. M.)	1					ban	ban
129	Shyngys D.N. (DaRRiK)	1					ban	ban
130	Shubert V.-. (ladno_xd)	1
131	Lysykh V.K. (Usilitel')	1
132	Rakishev D.M. (dowlssss)	1
133	Uluntseva E.D. (lenaulun)	1
134	Kolesnikov S.O. (bulbasaurus)	1
135	Kotovsky E. (Xukku)	1
136	Fandieiev O.V. (999Alex1984)	1
137	Sairanbek D. . (sairanbek_darkhan)	1
138	Esenin O.D. (LipaPrime)	1
139	Zolotov D.A. (Dmitriy-zol)	1
140	Safronov P.A. (Paulus73)	1
141	Belykh A. (AnnaBelykh)	1
142	kfafka K.T. (Dan_25151)	1
143	Tkachenko A.P. (Tkach401)	1					ban	ban
144	Security B.C. (Bhuvesh Cyber)	1
145	Talesnikov S.A. (slavatalesnikov1)	1
146	Kad V.Y. (s108)	1
147	Bydantsev A.V. (Nova10)	1
148	Korchyomkin D.A. (fowpz)	1					ban	ban
149	Baqyt J. (klick_from_iitu)	1
150	Adil (eclassic32)	1					ban	ban
151	K T.K. (Togzhanka)	1
152	Mukhametzhan M.A. (Miras2181)	1					ban	ban
153	mels A.M. (kkharvey)	1
154	Yermukhan R. (gokuguro)	1
155	Zholdigaliev (S1ko)	1					ban	ban
156	Nikhodchin K.V. (MortusKingfisher)	1
157	Kudaibergenov I. (Ilyassickk)	1
158	Novoselova N. (NovoselovaNV)	1
159	Olpanbay A.A. (Assyk232)	1					ban	ban
160	Safonov A.A. (toni.85)	1
161	Balduev D.G. (Dorgo)	1
162	Khishektuev Zh.A. (Zhambtserin)	1
163	Schipina A.R. (shiram1)	1
164	rnohe R.R. (rnohe)	1
165	Tagirov F.F. (Fidail21021998)	1
166	Petukhov M. (mpetukhov)	1
167	Nikonov P.M. (ForestJump)	1
168	Lover (McLovergfdhf)	1
169	aviel (drn0)	1
170	Edelman A. (al_ede)	1
171	aga G.A. (MasTak_1)	1
172	Kikhaev K.S. (SQL_enjoyerr)	1
173	Grigorjeva I. (Goku_chan)	1
174	vostrikov (vstX)	1
175	Hmelyov A. (alex10regio)	1
176	Askerov A.D. (Askaar01)	1
177	Simonov A.S. (AlexeyZHirniy)	1
178	Osokin K. (Povarovich)	1
179	Nikitin N.N. (ghoul1337)	1
180	Kozlov (darksvoid)	1
181	Fivaproldje O. (i1551)	1
182	Shapovalova (dasxxunya)	1
183	Unregistered	31

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References