Today's statistics at "SQL Exercises"

September 30, 11:55 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	Shibaev (saah)	1	1	96		3
2	Sh S. (junopark1)	1	1	21		1
3	Shul'ga A. (Shul'ga A.S,)	1	1	1		1
4	Ivanov (Domovoyy)	2			1	1
5	Bryndin P.V. (kolazolfen)	1					15	30
6	Pitel' N.L. (NikiMx)	2					15	27
7	Rudnev G.Yu. (gleb427)	1					15	25
8	Ismagilova D.M. (dilyasqy)	3					17	24
9	Cheban D.A. (kira_52947)	1					15	24
10	Kagarmanov K.E. (krispy_snickers)	1					15	23
11	Bulavinov D.S. (Avipshy)	1					14	20
12	Belyaev E.O. (Egor Belyaev)	1					12	20
13	Karimova A.T. (Alisa2462)	1					ban	ban
14	Vorontsov A.V. (yosida2923)	2					15	18
15	Kosichkin D.A. (Shizaabrama)	2					15	18
16	Borisova (JUBO24)	1					10	17
17	Kholina (jgcvkhjgckhc)	2					12	15
18	Orudzhov E.Ya. (Eltun)	1					9	15
19	Pekhota U.S. (ulyapkh)	1					9	14
20	tsukerberg M. (floglan)	1					10	13
21	Voevodina (MariaYuto)	3					9	13
22	Voronina A. (Anna V.)	1					9	13
23	Filippova T.A. (XnsCKL)	2					8	11
24	Zov (Dildobek1488)	1					7	11
25	Ryazanova D. (Lisyonok7)	1					7	11
26	Askar A.A. (Mastersex)	1					9	10
27	Rudakova A.E. (qrhduwo)	2					7	10
28	b (ViktorGFS)	2					6	10
29	Anton A. (feerbax1)	1					7	9
30	Kozhina N.E. (Nastyayayayaya)	1					7	9
31	K (sakudayo)	4					5	9
32	Alimova V.A. (Vika Alimova)	1					5	8
33	Lomov R.V. (Silverom)	1					5	8
34	Seredin V.S. (JoDaH_JoEsTaR)	1					5	8
35	Al'siev I.A. (IDI)	1					5	8
36	salmanov (onlu)	3					ban	ban
37	0000 (lili0000ll00)	1					6	7
38	Yolokhov (fazzone)	1					4	7
39	Bugretsov (jbeb77)	1					4	6
40	Tolebek A.K. (fafok)	2					5	5
41	Ermakova M.A. (qazxswed)	2					5	5
42	Valiullina K.E. (Karina289)	1					5	5
43	Kanirov M.O. (miasdifasidf)	1					5	5
44	Bashkirtsev A.A. (kilua0301)	1					5	5
45	Romanyuk A. (Romanyuk Anna)	2					4	4
46	Grebenyukov S. (OstapGreb)	1					4	4
47	Lcdma (LCDM138)	2					3	4
48	Zhabina I.S. (Irina Zhabina)	2					3	4
49	shamugia V. (vaso)	1					2	4
50	Zheludkov S. (zhsvyach)	1					2	4
51	Diego (Diego00)	1					2	4
52	Chervyakov S.A. (stttttts)	2					3	3
53	Bajraev M.M. (smjstc)	1					3	3
54	Saranchin M.S. (torvalds72)	1					2	3
55	Timchuk I. (Ilya Timchuk)	1					2	3
56	Toymyradova T.T. (Tazegul06)	1					2	3
57	Rudometov K.A. (givemegoyard)	1					2	3
58	Korbut V. (Vargengen)	1					2	3
59	Bel'kin T.N. (TimBel)	1					2	3
60	Semin A.V. (andrey.semin)	2					2	2
61	Bondarchuk G.V. (Gosha11112233)	1					2	2
62	Stryapkova N. (nanasp9ctre)	1					2	2
63	sultanov S.S. (Veran_Shard)	1					2	2
64	Krasnov A.A. (Nutr1k)	3					1	2
65	Krajnyukova Yu.G. (1lobser1)	2					1	2
66	Moroz M.A. (Mikhail_mixa)	2					1	2
67	Merzlyakova A.S. (alen4ik.a)	2					1	2
68	Myal'kin E.A. (invincblemouse)	2					1	2
69	Kuz'min E.A. (Lukvill)	2					1	2
70	Krupko E.L. (Krupko)	1					1	2
71	Nikolaev A.N. (AlexeyHeizenberg)	1					ban	ban
72	Kydyrov S. (SultanBeybars)	1					1	2
73	Kozlova A.P. (nesteaeeqq)	1					1	2
74	Sirotkina T.A. (Tat'yana65183817912892918)	1					1	2
75	Islamov M.R. (Mikael'120506)	1					1	2
76	Bob (foxtailer)	1					1	2
77	Lebedev G.A. (xeGalaxy)	2					1	1
78	Golovachyov K.E. (?l?????_???D????)	2					1	1
79	Pshenitsyn V. (EvaKrakenSlayer)	2					1	1
80	Tikhonchuk A.Yu. (SaN0K)	2					1	1
81	Murav'ev M.I. (Nigrin)	2					1	1
82	Gabdrakhmanova (AG_BD)	2					1	1
83	Aksinina J.A. (yuyuyulili)	2					1	1
84	Vadim (VTheTree)	1					1	1
85	Chiblis (Lera280820)	1					1	1
86	Mel'nikov K.S. (mks2607)	1					1	1
87	neletko Y.B. (sxlava)	1					1	1
88	Mishenev M.M. (Mishenev Mikhail)	1					1	1
89	Nizamtdinov (arax1s)	1					1	1
90	RQamz R.R. (RQamz)	1					1	1
91	Tarasova (r-r-r-r)	3
92	Smirnov M.A. (Omellou)	3
93	Kholkina (dimayulia2002)	2					ban	ban
94	Mironenko O. (Ol'ga Miro)	2
95	Pitcil (fallsin)	2					ban	ban
96	Nesterov D.A. (saha909)	2
97	Belyaev I.A. (Igorman231)	2
98	Andrusenko E.S. (Ekaterina Andrusenko)	2
99	Burov K.M. (gopher_)	2
100	Lebedeva A.R. (Leb_Nastya)	2
101	Efimova K.I. (flowuuup)	2
102	Teben'kova K.S. (katalynd)	2
103	Rybin D.Yu. (Bill44)	2
104	Khuzagaripova (EKh_BD)	2
105	Nechaev K.A. (Kepuchelli)	2
106	Moiseenko S.I. (mois_)	1
107	keieiuty (keieiuty)	1
108	Kostomarov A.V. (al29)	1
109	Koptel'tsev V. (selber)	1
110	Salas G. (Gabo_87)	1
111	Zahorodnii A.S. (A.Zag)	1
112	Rudenko A.S. (Xoniks)	1
113	IIGrigor'eva (i_i_g)	1
114	Kadiev (Watermelon king)	1
115	Davletshin (georgiee1414)	1
116	Glushkova (mrs*niemand)	1
117	Vaulin V. (Axilka)	1					ban	ban
118	Hurullina A. (Stels-ya)	1
119	Tutarkov A. (barmaley19)	1
120	Rudnev V.V. (pazartesi)	1
121	Khrol N.S. (Natalia_Khrol)	1
122	qwe Q.Q. (qwevzxxv)	1
123	Potemkin (Yazon_79)	1
124	Sarkis'yan G. (gennadi_s)	1
125	Rodin (uoloki)	1
126	Gubskij (Norco)	1
127	P I.*. (IrinaPetr)	1
128	R. (Wra1th)	1
129	Kalashnikova A.K. (anzhelikakalashnikova)	1
130	Goreva A. (gorevaalina)	1
131	Petrov O.N. (Reshala295)	1
132	Abramov V. (Ichigo Kurosaki)	1
133	Mamuchadze V.D. (Valeria48)	1
134	Abdr N. (abdr)	1
135	Stytsyuk N. (natalia19930420)	1
136	Nurbaev V.V. (Ulanovka)	1
137	7shkin S.V. (Slavnik)	1
138	Abdulov F.N. (FuadSQL)	1
139	Burtonov A.V. (tak to)	1					ban	ban
140	Kornienko M.A. (ErrM)	1
141	Melekhov (leshasmp1989)	1
142	M (adilyam)	1
143	Lozovoj G.V. (HoroL)	1
144	Khakhulina E.V. (Akulina)	1
145	Bagirov A.Sh. (misha_bagirov221)	1
146	Amirov A.A. (Pablo67)	1					ban	ban
147	Marinich A.D. (nanushka48)	1
148	Rusina (Luch_21)	1
149	Myakishev M.N. (iuiui)	1
150	Ryabicheva A.D. (Alyonaana421)	1
151	Chastova E.A. (Kate44)	1
152	Nasyrkina E. (eleonnora12)	1					ban	ban
153	Sharov M.K. (mqxshaaa)	1
154	Kolevatova E.A. (KaterinaKol)	1
155	savchenkoam.92 A.M. (textsamxman)	1
156	Knyazev (Bumbums)	1
157	Zubkov K.V. (klim63)	1
158	Usachev A.A. (etot33)	1
159	Grabchuk A.M. (Middlewarer_pseudo)	1
160	Korshunova M. (Nuhsrok)	1
161	S M. (IU5_starosta)	1
162	Petrova P.A. (petrovapolina0722)	1
163	Baukina E. (Yo88)	1
164	Monakov N.G. (Chicken_gun_2009)	1
165	Uvarova P.P. (Polina15)	1
166	Okorokova N.A. (qwe777)	1
167	Zaytsev (papadoc1337)	1
168	Akhmadov M.A. (AkhmadovM)	1
169	Mustafaev Z.Sh. (M Z)	1
170	Temirsultanov M.R. (mollan)	1
171	Filatova A.V. (nastya_fv)	1
172	volgina (qwertyuiop145)	1
173	Aksin'ina Yu.A. (Mimimumi)	1
174	Sal'nikov D. (BOOBA441)	1
175	tsyrenova E.E. (qamiregeee)	1
176	m (fairy_sin)	1
177	Lachinov L.A. (Psevdo_nimb)	1
178	Smirnov D.P. (sdnl000)	1
179	Sukhanov E.S. (stdnt091)	1
180	shangina A.O. (555555558)	1
181	Tihomirov N.V. (Tetr654)	1
182	Kidanova E.A. (Kranchi)	1
183	Fedchenko A.D. (EtoAleksandr)	1
184	arteic (arteic)	1
185	Korchevskaya M. (Korchevskaya M.A.)	1
186	Unregistered	19

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References