Today's statistics at "SQL Exercises"

January 11, 16:16 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	Shajdt I.V. (Ivan222)	2			14	19	15	18
2	Livshits (@Valeriy)	2			4	4	3	6
3	Ryabov A. (Slavander)	1			2	4
4	Safronov P.A. (Paulus73)	1	1	47		3
5	Velikaya Yu. (juliagreat)	1					15	25
6	Shiryaeva D.A. (Shiryaeva Dar'ya)	1					15	24
7	atalaev (byterbrodSQL)	1					15	24
8	Pantyukhov A.A. (DR.Liveseu)	1					15	24
9	Khairullina (ivia28)	2					ban	ban
10	Stuchinskij A.V. (SenyaZver)	1					15	20
11	Khairullina (ivia28_2)	1					ban	ban
12	Merk A.P. (picadillo)	1					15	18
13	Tarakanov V.V. (ChXos)	1					10	16
14	Lazarenko (panda1307)	1					10	16
15	Pupochko T.K. (AdeptSem)	1					10	16
16	Kudryavtsev K.S. (randomcheg)	3					9	15
17	Bukenov D.M. (darkhan97)	1					9	14
18	Bavin (AdelBavin)	1					9	14
19	Abdrakhmanova M. (marina_abd)	1					8	14
20	Vedmedeva M.V. (VupsPups)	1					7	13
21	Kutyrev I.R. (Ivku1)	1					9	11
22	Yava C. (CAVAYAVA)	1					6	11
23	Dettsel' (AlexDET)	1					5	10
24	KHVAN D. (dimakhvan)	2					7	9
25	Rastrygin (PavelRast)	1					6	9
26	Ryabykin M.V. (Mikhail1704)	1					5	8
27	Kor (girlwithdata)	1					5	8
28	Hesenzade (Hasanzade)	1					5	8
29	Mariya (vladimirovnaaa9)	1					4	8
30	Rudovich R.P. (rdvch8)	1					6	7
31	Roza T.A. (tanyushkaroza)	2					4	7
32	Shalygin (serenyaz)	1					4	7
33	Silkin G. (Georgyy)	1					4	6
34	Ostapenko S.G. (Nezha)	1					4	6
35	Zhigalova V.A. (butterbread)	1					3	6
36	Aliev A. (excell)	1					5	5
37	Karambe H.N. (DaddyIsBack)	1					5	5
38	Aleksandr (a7lexiK)	1					5	5
39	Kopitajko D.M. (DanilaKopitayko)	2					3	5
40	Abakumova E.A. (Abel1768)	1					3	5
41	z R.M. (w1nt3rr)	1					3	5
42	... (Igor...)	1					2	5
43	Rudovich D.P. (RUDOLFF)	1					3	4
44	Radonezhskij S. (miery)	1					3	4
45	Sidorenko G.M. (Cody1994)	1					3	4
46	Malakhov A.V. (JLaKeR)	1					2	4
47	Qw I.B. (Drone123)	1					ban	ban
48	Zimirev V.S. (zivs)	1					2	4
49	Chervyakova (Sora)	1					2	4
50	Kal'gin A.B. (Tioma20003)	1					2	4
51	Morozova (Irina1111111123121878763)	1					2	4
52	tulyaeva S.T. (boqiemm)	1					2	4
53	P'yankov (IVAN PI)	3					ban	ban
54	Demenyuk P. (PasharDem)	2					3	3
55	neo (tenflower1221)	1					3	3
56	Aminov D.V. (cotik228)	2					2	3
57	Kurzin O.V. (valentinych)	1					2	3
58	Dovchenko L.K. (Candide)	1					2	3
59	Zolotarev (Yura Zolotarev)	1					2	3
60	Kharisov S.R. (semeckaa)	1					2	2
61	Makarchuk D. (xx.darja)	1					2	2
62	Cherkasov M.I. (xoxmach1)	1					2	2
63	Ganeev R.V. (Ravil-1989)	2					1	2
64	Amaterasu .. (KeKeiGenaki)	1					1	2
65	obrezkova (obrabrabra)	1					1	2
66	Geller P. (babmy)	1					1	2
67	Ivanov P.P. (PavelPLAT)	1					1	2
68	Sizonets (svetleishiy avgustin)	1					1	2
69	chachibaia (gegi)	2					1	1
70	Berezin A.R. (kurabeha)	2					1	1
71	Fomin (lone_analyst)	2					1	1
72	Eremina A.V. (Arcanum)	1					1	1
73	Yurchenko (tselkovyy)	1					1	1
74	Ershova V.V. (vera1507)	1					1	1
75	timaeva L.P. (listim)	1					1	1
76	P I.*. (IrinaPetr)	3
77	Zholobov A. (RelArt)	2
78	Ermakov (Andrew Ermakov)	2
79	Shibko A.M. (Ales'_1987)	2
80	Sh Yu.N. (enken)	2
81	Sarkis'yan G. (gennadi_s)	2
82	Komov S.M. (Komov S. M.)	2					ban	ban
83	Kun D.M. (salomorja)	2
84	Ekhlakov I. (pomidor2525)	2
85	Suprun D. (TimonSP)	1
86	Kirillov A.A. (kiralex)	1
87	Koptel'tsev V. (selber)	1
88	Kononova O. (Uten)	1
89	Vinogradova S.M. (Tigra1)	1
90	Chebotareva A.O. (Serafff)	1
91	Ivanov P.A. (goaliepash)	1
92	Makarov D. (Dmitriy Makarov)	1
93	Potylitsyn M.A. (latimery)	1
94	Smith (tibacityblues)	1
95	Kuznetsov (mrTvix)	1
96	Filatov D.D. (Anticoder)	1
97	eqweasdd (alexa123123gth)	1
98	Ivanov I.I. (vlad91)	1
99	. (venera060)	1
100	Egorov (LazyUser)	1
101	Kolbasin D.D. (dimanko)	1
102	Pankratova A.P. (lastizvilina)	1
103	Lyalin S. (n3ked)	1
104	Kislekov A.M. (Panzerkampfwagen)	1
105	DO R.M. (danchikPi)	1
106	Kanevskiy I. (Kanevskiy)	1
107	Balaban V.R. (Balaban1)	1
108	Palasukhin D.S. (Nitrinos)	1
109	Vdovin S. (Rujan)	1
110	Cherevkov S. (MandoMirsh)	1
111	Fedorova V.N. (verun)	1
112	Tugulov (AquiAnna)	1
113	Ermakov D.S. (ErmakOFF)	1
114	Platonov A. (Golden-Times)	1
115	Ivanov I.Yu. (Bazenych)	1
116	Rect (MarkAvrel)	1
117	Mashkov V. (VadimM_PGK)	1
118	fioletovaya (fioletovaya2)	1
119	Shekemov T.V. (Tvshek99)	1
120	Gorbanyova (Mariya_22)	1
121	Kolomin A. (valanchik)	1					ban	ban
122	Aemaeth (Aemaeth)	1
123	Komissarov (LEHA_MC)	1
124	Ivanov (userTest1)	1
125	Zamotajlo A.A. (Zamelo)	1
126	Dyuzhikov A.I. (Dyuzhikov A.)	1
127	Bondarev M.A. (misha098)	1					ban	ban
128	R. (Wra1th)	1
129	NAV (sshtoy)	1
130	Bakhtin A. (rvn_rus)	1
131	Oblepikhov D.E. (SOSchlenoSOSS)	1
132	Akhatov A.I. (humandroid)	1
133	Maratov O. (spoer)	1					ban	ban
134	Lysykh V.K. (Usilitel')	1
135	Zhiryakov V.V. (vladvladzero)	1
136	Trubchaninov (Chackchoker)	1
137	Kadochnikova (siropiyo)	1
138	Popov A. (LexP)	1
139	M (DanilM2304)	1
140	Demin V.R. (qward169)	1
141	Ojern (ErenYeger)	1
142	Nosov A.A. (Aleksej (FTO))	1
143	Suleymen A.M. (Kozaiym)	1
144	Onischenko S.A. (Elinas)	1
145	Shestakov E.D. (wnwnkm3)	1
146	Belyak (TheTester)	1
147	Mezokho I.S. (clonda)	1
148	Davletova I.D. (epicmiss)	1
149	Dudko (whyse2000)	1					ban	ban
150	Dron D.D. (Dron1234)	1
151	Potemkina O.V. (Oshaosha)	1
152	maisuradze (gugamaissu)	1
153	dawsdawd (cxzscxz1231)	1
154	Khlebnikov K.B. (Yazheek)	1
155	Deulin I.A. (Greyhan)	1
156	Mikhajlova E. (candysss)	1
157	Gorlyshkov M.S. (Smail)	1
158	Ob'edkov (empty.i)	1
159	Denisenko (Lilith8117)	1
160	Kubyshkin (Kostya1694)	1
161	Zajtsev E. (zaegorrr)	1
162	Valdimirov (Valdeemeer)	1
163	Shast V. (lek321)	1
164	Mikhajlenko S.A. (Bambarbia_Kergudu)	1
165	Shautsou (MrRamirez)	1
166	Van der Vin P.V. (DestroEdinson)	1
167	Selivanov N.Y. (zwitter)	1
168	Ch M. (ArtegaCh)	1
169	Bulanova T.V. (tabuta_sql)	1
170	Denisova D. (Didi_d)	1
171	Unregistered	16

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References