Today's statistics at "SQL Exercises"

February 06, 10:48 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	Abramova Yu. (GalaxyTears)	1	1	63	2	3
2	Sil'van (silvr)	1	1	46		2
3	Livshits (@Valeriy)	1			2	2
4	Andzhukaev E.S. (suzume)	1			1	2
5	Lakalov D. (Meilleur_NG)	1			1	1
6	7779857415623 (7779857415623)	1					15	27
7	Zhuanys M. (YessGo)	2					ban	ban
8	maliciousintent (maliciousintent)	1					15	26
9	Shamgunova T.Sh. (Neil19.01)	1					14	24
10	Mullayanov Z.R. (ZinurHaise)	1					14	24
11	Konratov S.K. (Sagyntay)	1					14	23
12	Mrx A.M. (iskaidar1)	1					13	22
13	Novikov A.A. (isip_a.a.novikov@mpt.ru)	1					12	20
14	Amangeldiuly A. (CDF)	10					ban	ban
15	Zhiznevskij V.V. (schizza)	2					15	18
16	Atirbek B.Zh. (123698)	2					10	18
17	Anvarova R. (Rabiiiii)	2					10	17
18	Dauletbaj A.G. (Alma07)	2					10	17
19	Yertay B.E. (bibikaa)	1					ban	ban
20	Abdirakhimova N.D. (Nasiba)	2					10	16
21	Baktyoraz D. (Dastan Baktyoraz)	2					9	16
22	Egamkulova B.A. (banu123)	2					9	15
23	Murat (meiram05)	1					9	15
24	Filippov I. (philiil)	1					10	13
25	Kutin (ZugyWagy)	2					8	13
26	Erzhan A. (Aid0s)	2					7	11
27	Zhamshit M. (mns2026)	1					6	11
28	Shmelkov M. (Maxi9mK3a)	1					6	11
29	Fedyayeva A. (Adellele)	1					6	11
30	Nurken A. (alina34)	1					6	11
31	Golubev E.S. (EgorG2)	2					8	10
32	Zholdasbaj K.M. (proxymocentavra7852)	1					6	10
33	Semenikhina T.N. (dumbseal0)	2					5	10
34	Postel'nyak M.G. (ravemode)	1					7	9
35	Amankulov A. (qawqaw)	1					5	9
36	Kazakov N.A. (Nikita Kazakov)	1					5	9
37	lpan P.S. (lpan)	2					7	8
38	Dronin D.V. (Dendi)	1					6	8
39	Asan Z.E. (zhannionly)	4					4	8
40	Konopatskiy M. (fu2re)	3					6	7
41	Sharafutdinov A. (FrostFire96)	1					6	7
42	Armanuly (R_E_V)	1					6	7
43	Orlov (ktrsis)	1					ban	ban
44	Baranova N.Yu. (Natalya7)	1					5	7
45	Turar Z.K. (Zhandaulet06)	1					4	7
46	Orynbassar D.B. (Daukalab)	1					5	6
47	Askaruly B. (BagaShoqan)	1					4	6
48	Sejpish N.A. (Nonanurs)	2					3	6
49	PENCHUK A. (ANNAPENCHUK)	1					3	6
50	Kirgizbanva A. (Adina)	1					3	6
51	Kharkhavkina M. (gahaga)	2					5	5
52	Yushkov (kopernik229)	2					3	5
53	Btyschev A. (badebum)	1					3	5
54	marusya M.Yu. (Mari222)	1					4	4
55	Badyraa T.B. (thaikho)	1					4	4
56	Kovalenko A.A. (Andrey86_)	1					3	4
57	Yastrebov D.D. (Yakimori)	1					ban	ban
58	Bu A. (AlexHombre)	1					3	4
59	Lazutkin K.V. (Tahion)	1					3	4
60	Zhargalyn E.A. (ezh2125)	1					2	4
61	Tokhtakhunov W. (NuevaV1D4)	1					2	4
62	Shibaev (orman)	1					3	3
63	Krapivnitsa (Krapiva)	1					2	3
64	Panchenko (moanett)	1					2	3
65	Ajtkozhina M.A. (madinanana)	1					2	3
66	Bachurin V.V. (Englman)	1					2	3
67	okey (knueL1337)	1					2	3
68	Golubova N. (NSQL)	1					2	3
69	Artemenko K.I. (RustyToad)	1					2	3
70	Bekkuzhin A. (Alizhan1337228)	1					ban	ban
71	Gombozhapov A.B. (1ntex)	1					2	2
72	Sharapov (QQ_aleks)	1					2	2
73	Gorbunkov M.S. (gms)	1					1	2
74	Matroskin (Kot_Barsik)	1					1	2
75	Ivanov I.I. (vlad91)	1					1	2
76	Sagyntay (Orynkul)	1					1	2
77	Galay A. (ivgam)	1					1	2
78	Chumin M. (MaximusPrime)	1					1	2
79	Arman B.S. (Weskersky11)	1					1	2
80	Nugmanov D.N. (sonic_o66)	1					1	2
81	Kakharman D. (Kakharman1)	1					1	2
82	Vologina A. (koteika_nutella)	1					1	2
83	Mukhortov P.P. (petrmukh)	1					1	2
84	Ustinova A. (mandarinkaalex)	1					1	2
85	Chuckov P.A. (getZimoss)	1					1	2
86	Panicheva V.D. (_Vika_)	1					1	1
87	Abduragim I.I. (c14sh)	1					1	1
88	Abdr N. (abdr)	1					1	1
89	Medvedev A. (Kasabella)	1					1	1
90	Magomedalizade O.V. (OrikMelancholic)	1					1	1
91	Pavlov M.V. (truman_66)	1					1	1
92	Galkina (huuuq)	1					1	1
93	Petrenko N. (Natalia Petrenko)	1					1	1
94	Badmaev B.G. (Badmaev Bato)	3
95	Sizov (Kirill676767)	3
96	Begunovich S.G. (Canursus)	2
97	P I.*. (IrinaPetr)	2
98	Kozmet E.E. (Era12322)	2
99	Zharkov V.Yu. (vadim83)	1
100	Petrov Y. (YuriPetrov)	1
101	largys L. (LARGYS)	1
102	Koptel'tsev V. (selber)	1
103	Boev Yu.A. (YABoev)	1
104	Polyakov V.M. (rock_4)	1
105	Farafonov D.V. (kibbqb)	1
106	1nfer (1nfer1)	1
107	Ivanov (Leroy555)	1
108	Glushenkov A.I. (alexLR)	1
109	cupnoodles C.C. ([object Object])	1
110	Selezneva Ya. (Ena)	1
111	Frolov K.A. (Murderface_)	1
112	Sokolov Ya.A. (Mdfn19)	1					ban	ban
113	Yakshin I.V. (ivan_y)	1
114	Nevodnich E.N. (evgenyn)	1
115	Noskov A.A. (Chessmaster123)	1
116	Timofeev A.A. (SpecHex)	1					ban	ban
117	Sh Yu.N. (enken)	1
118	Semenov O.M. (Semenov Oleg)	1
119	Agametov A.T. (Vipanzer)	1
120	Bajkeev D.I. (moroz2k)	1
121	fioletovaya (fioletovaya2)	1
122	Markova (Irena280880)	1
123	Zemskova A.B. (Pineapple_Pie)	1					ban	ban
124	Tikhomirova E.T. (YellowJacket)	1
125	Parebko M.P. (Maxsim284)	1					ban	ban
126	Malikov A.A. (dzenn)	1
127	Dmitrieva (dmitrieva)	1
128	Aniskovich E. (evgeniyaniskovich)	1
129	Nikolaev A.N. (n1kolaevs)	1
130	R. (Wra1th)	1
131	Agafonov A. (Alexeische)	1					ban	ban
132	Nuriev T.T. (AngelLives1)	1
133	Belousov M.I. (w_mark_w)	1
134	Nikolaev K.D. (fufel27)	1
135	Komov S.M. (Komov S. M.)	1					ban	ban
136	Potapova V.A. (malespero)	1
137	Lysykh V.K. (Usilitel')	1
138	Efimov V.A. (Retro-Wolf)	1
139	Zolotarev (Yura Zolotarev)	1
140	poli (poli87)	1
141	Fedortsova A.A. (Annnnzzzz)	1
142	jj (evgenyyyya)	1
143	Akhmetova A.I. (anna_ahh)	1
144	Safronov P.A. (Paulus73)	1
145	Gusev (superguzlik3228)	1
146	Belyak (TheTester)	1
147	T?r?yn R.E. (ramazan_0)	1
148	Pyatkova Yu.V. (Yuksik)	1
149	Petukhov D. (DmitryData)	1
150	Karebina (ewje)	1
151	Shast V. (lek321)	1
152	Khovrin (LunarShadows)	1
153	Mogilevskij S.E. (Stanislav Mogilevskij)	1
154	Shenkhorov B.B. (Fergolpas)	1
155	Weimer (ilwe)	1
156	Golovanova (stacie)	1
157	Kuznetsov E.M. (Chtotakoe)	1
158	Yerkebayeva Y.Y. (Yeldana)	1
159	skumwo (skumwo)	1					ban	ban
160	Medetbek M.K. (Kanzh)	1
161	Baqyt J. (klick_from_iitu)	1
162	Zeinolla M. (Marzhan2106)	1
163	Serik (Yernur37197)	1					ban	ban
164	Atashkhoja A.K. (Khan_38013)	1
165	Aisabakiev K.R. (A1sky)	1
166	Manankov D. (Daniel_Kov)	1
167	Zhumadilov A.R. (KiDFeeD00)	1
168	Beimbet A. (Assem-800)	1
169	Khairikhan S.-. (parz1vAl)	1
170	Krayushkin A.V. (Shtemp)	1
171	Goldobin E.G. (prm259)	1
172	Serikbay B.T. (yurie_sg)	1
173	Aspandiyar N.B. (nurash)	1
174	Seitzhan R.Z. (rauan066)	1
175	rash (Rashida)	1
176	Yadigarov R.A. (Alfa330)	1
177	Shchetinin M.I. (sql48537867866)	1
178	syrym (sryrmboi)	1
179	Kasanova A.N. (kasanova aruzhan)	1
180	Ibrash Zh.S. (Ibrash)	1
181	Sat N.I. (Nurs_219)	1
182	Bizhankyzy D.G. (bizhankyzy didar)	1
183	Tleules A. (Tleules)	1
184	Urkenbay A.S. (aktore)	1
185	Omirzak D.Z. (Dnl.omir)	1
186	Rakhymzhan I. (Iliyas0005)	1
187	Zh?mabekova G.O. (Gulvi07)	1
188	Novitskaya (Katinn)	1
189	Najdanov D.E. (Lasus)	1
190	Kubyshkin R.V. (Rm.kubyshkin)	1
191	Bityutskij S.A. (HaNsOo)	1
192	PerplexityPro (perplexity_pro1)	1
193	Golubev M.Yu. (4rb)	1
194	Bashkin N. (bashkinnaksim)	1
195	Tautaviciute G. (greta.t)	1
196	Yan'shin M.E. (kugaKuru)	1
197	Sap'yan (Tina.S)	1
198	Bondarev I.S. (ivi7117)	1
199	. Yu... (Yurchello)	1
200	Semenyug V. (ViFlow)	1
201	Urstenbekov Z.K. (urstenbekov)	1
202	Cernica I. (CernicaJohn)	1
203	m D. (PEMOHT_MOCTA)	1
204	hl D. (pepsicola13)	1
205	AZ (AZ1313)	1
206	Anosov (stels_1)	1
207	Abdulvalieva (masja2026)	1
208	Rakhmetulla G. (gulsariya)	1
209	Unregistered	17

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References