Today's statistics at "SQL Exercises"

June 17, 16:03 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	Yakovlev (Dez46)	2			8	13
2	D (IlyaDukh)	3			3	3	15	18
3	Gorbunov M.S. (gms)	1	1	53		1
4	Pakhomov A.S. (pahomovas)	3					ban	ban
5	Pankratova N.D. (Nadegda94)	1					15	26
6	Taigarayev Y.K. (ZeroFGM)	1					15	24
7	T A.-. (anton-tt)	1					14	24
8	nex (Nexkex)	2					15	20
9	123 (dwafghzjkxhcjkzxcv)	1					15	20
10	Peredrij R.A. (ratikZ)	1					12	20
11	Kovalev N. (Fantasyer)	2					11	19
12	Idrissov B. (Batokin)	2					15	18
13	Titov A.-. (ant_tt)	1					15	18
14	fayfva (ewras)	1					15	18
15	Katyutin D.E. (DenisKat)	1					15	18
16	Beloborodova S.A. (belosofia)	1					ban	ban
17	Amirbekov A. (lawest02)	1					11	15
18	test (qwerty37892)	1					9	15
19	Koshel'nyj V.V. (d1abet1k)	1					9	15
20	Ivanov N. (nick8998)	1					10	14
21	Ostretsov M.A. (whatrac)	1					10	13
22	Shupanova G. (ShGulmira)	2					8	13
23	Ksiks K. (Ksyuksiks)	2					7	12
24	Shelekasov (Vasshell)	1					9	11
25	Langlits (milkeyway)	1					8	11
26	dsmflsdf S.S. (pavel2324324)	1					6	11
27	Temirgali N.K. (NurTem)	1					8	10
28	L L.L. (lbrstq)	1					5	10
29	zharova M.B. (malikkkk)	1					8	9
30	Ivanov (Vuh31)	1					7	9
31	Topilina E.V. (kat9i)	1					5	9
32	Emirov N. (breeze_)	1					5	9
33	Scherbakov (chYwarY)	1					7	8
34	Averin A.R. (alverin1310)	1					5	8
35	Abduhamidov M. (marufwashere)	1					6	7
36	Varyushin (Senior Bimbo)	1					6	7
37	Okolnikova (SofyaO)	2					4	7
38	Pahadayeu A. (AndOffline)	2					4	7
39	Churyukin A.S. (AChuryukin)	1					4	7
40	Sidenko A.G. (AlekhandroSanches)	1					6	6
41	Sira (lookwudid)	1					4	6
42	Chajka M.O. (Antares678)	1					3	6
43	Khristyuk A.A. (NassKh)	2					5	5
44	Reshetnnikov (Kofanchik)	2					5	5
45	Pak M.A. (AYomayo)	1					5	5
46	Gus A.M. (yu1kkken)	1					5	5
47	Zubakin N.Yu. (nightmoss2424)	1					5	5
48	Lekomtsev (Teck-)	2					3	5
49	Polyakova K. (ps_katerinka)	2					4	4
50	Serikkali B.A. (Beknur)	1					4	4
51	Krutyakov V. (kvadrator)	1					3	4
52	Zaverin M.A. (nedo23)	1					3	4
53	P (neke_paz)	1					2	4
54	Il'in I.N. (Igor_Il)	1					2	4
55	Manin V.V. (ManinVV)	1					2	4
56	Lagutin D. (xiduku)	1					3	3
57	dYaTLOV G.D. (GoshaBillis56)	1					3	3
58	Gainullina A. (adelelyn)	1					3	3
59	Petrov I.I. (psixxxik)	1					3	3
60	Serdyuchenko E.Yu. (eserdyuchenko)	2					ban	ban
61	Diaz de Leon D. (theonelostTaco)	2					2	3
62	sn N.S. (nikitkasg)	2					2	3
63	Kakulin A.A. (tema111)	1					2	3
64	Alekseev A.S. (Andser)	1					1	3
65	Egorova M.Yu. (egorova.m.u.)	2					2	2
66	Vlasova A. (Sova2009)	2					2	2
67	Ievleva (1himera)	1					2	2
68	Malafij D. (Dorarr)	1					2	2
69	Korkunova K.V. (shpilka_ml)	1					2	2
70	Kovalenko A.A. (Andrey86_)	2					1	2
71	Zhukov N. (sariya_)	2					1	2
72	Tlegenov I. (tlegenovv)	2					1	2
73	Pushkarev S. (PSV_n)	2					1	2
74	Kuz'mina E.V. (Fiction)	1					1	2
75	Yemelyanov (Paramon877)	1					1	2
76	Chulyukov N.V. (AzazeeL)	1					1	2
77	mamkin koder (mamkin koder)	1					1	2
78	Sergei (srpnkv)	1					1	2
79	pppat (ferta)	1					ban	ban
80	Kravchuk O.T. (Popori)	1					ban	ban
81	Bityukova N. (Nastya8972008)	1					1	2
82	Gizatulin V.S. (Vadim Gizatulin)	1					1	2
83	Leonov (aslnv1)	1					1	2
84	--- (lockjaw556)	1					1	2
85	Schegol' Yu. (JulyaSchegol)	1					1	2
86	Tarnapovich (dormanion)	1					1	2
87	Ungelmakht A.V. (Barta Linch)	1					1	2
88	Gonzalez C. (Cathst91)	1					ban	ban
89	Trejo J. (juanchoki)	1					1	2
90	K (Levanlomg)	2					1	1
91	Babushkina E. (gstek32)	2					1	1
92	Korshunova I.A. (Korshunova Irina)	2					1	1
93	Gulamov A.A. (kek1111111111)	1					1	1
94	Prajs A.A. (Abort_Price)	1					1	1
95	Bystrov (zesadnezer)	1					1	1
96	Medyntseva M.E. (ManunaMed)	1					1	1
97	Bogattsev A. (alexnikb)	1					1	1
98	Sidorin T.A. (ZALLiRoG_XXX)	1					1	1
99	Zenkin I. (GoziNet)	1					1	1
100	Turuzbekova A.M. (Aylin120699)	1					1	1
101	Nope (ScreamingSeagull)	1					1	1
102	Chegesov A. (Bando_Gango)	1					1	1
103	Doronin (Yury_D)	3
104	Sarkis'yan G. (gennadi_s)	3
105	Krapivina L. (epywabi)	3					ban	ban
106	Krasovskij E.A. (pegoopik)	2
107	Gitinomagomedov (gmansur88)	2
108	P I.*. (IrinaPetr)	2
109	Izhboldin (G3rm4n)	2
110	Rabdanova K.E. (hwq)	2					ban	ban
111	Bazarzhapova N.A. (e39228)	2					ban	ban
112	Arshanov A.I. (Balzhima)	2					ban	ban
113	Tsytsykova A.D. (fhvhdchi)	2					ban	ban
114	niko (lenovolog15)	2
115	Shegebaev A.P. (Alisher Pinov)	2
116	P{util S.A. (Savva228)	2
117	Maksimov E.V. (taurus9292)	2
118	Makarov I.A. (_Bkmz_)	1
119	Shibaev (saah)	1
120	Zuev N.S. (CTALKEP)	1					ban	ban
121	Yakimov M.A. (yama)	1
122	Koptel'tsev V. (selber)	1
123	M (MrQzZza)	1
124	Ivanov (markkram)	1					ban	ban
125	Karakcheev E.S. (DjonBrain)	1
126	Skotnikova A. (sasha90)	1
127	Alavatskaya A. (Alavator)	1
128	Sabo R. (unstracis)	1
129	test (batdmitry)	1
130	Ozerchuk A. (anka9205)	1
131	Arutyunyan A.A. (ARTUR1100)	1
132	Malysheva K. (Scarlet_wind)	1
133	Bychkov S.A. (TeaInTheCup)	1
134	Knyazhev D.P. (keltyara)	1
135	Saverchenko V.A. (vova565)	1
136	Ivanov I.I. (vlad91)	1
137	vvv V.V. (sssa)	1
138	Arni (Arni111)	1
139	Meliakhmatova O.G. (olga99)	1
140	Kiselev D.V. (Diman1422)	1
141	Belyakov D.B. (Belyakoff90)	1
142	TURYMTAY A.G. (AQARYS)	1					ban	ban
143	Rufov K.G. (rukogen)	1
144	Gradoboeva D. (DianaGradoboeva)	1
145	Epifanov F. (Phatick)	1
146	Vdovin S. (Rujan)	1
147	Wooster (Nick Bucklow)	1
148	Gritsina Ya. (grit6)	1
149	123zed 1.1. (123zedc)	1
150	T A. (Anju_sha)	1
151	Aro E.F. (Ekaterina Araud)	1					ban	ban
152	Smolnikov (ViciousXerra)	1
153	Pechkin R.E. (ZiRus)	1
154	Merkulov N. (fufik9)	1
155	Solomonov N.S. (Niko17)	1
156	Kryzhanovskij N. (Nicky_FF)	1
157	ss A.S. (SashaSS)	1
158	Ler (rrre)	1
159	zem V. (vit_363)	1
160	Zasokhin V.P. (DOC 007)	1
161	Zajtsev R.O. (zayrox)	1
162	Sokolov (zelenogrodov)	1
163	241 4.1. (shiningsheep1)	1
164	R. (Wra1th)	1
165	Rusakova A.A. (AllaR)	1					ban	ban
166	Babunova (BabyPanda)	1
167	Kormilitsyn D.E. (migattenogokui)	1
168	Skibin V.V. (SQL_vvs)	1
169	Lysykh V.K. (Usilitel')	1
170	Khandetskaya A.Kh. (khandzetskaya)	1
171	Vakulko A.V. (VAlexandrV)	1
172	Yastrebov D.D. (Yakimori)	1					ban	ban
173	Safronov P.A. (Paulus73)	1
174	Bayburin I.R. (iskanuz)	1
175	Demin D.S. (AvE3898)	1
176	Savin T. (jeffrey_epstein_1488)	1
177	Serik (Yernur37197)	1					ban	ban
178	Volkova E. (keke97)	1
179	Zakharov (Ave_Asuka)	1
180	Gurov I.A. (i_gurich)	1					ban	ban
181	Zhivotenko N.I. (Kolya777.21)	1
182	Zagorel'skij A.M. (Alexey_Zago)	1
183	Bal'zhinimaev K.A. (iqkdjos1)	1					ban	ban
184	Banzarov E.B. (buddha.)	1					ban	ban
185	Drygin D.D. (DanilDryg)	1					ban	ban
186	Ergonov A.G. (LexusLeha)	1					ban	ban
187	Tsydenzhapova Yu.B. (juliaTsy)	1					ban	ban
188	Antonov S.E. (AnSoE)	1
189	Kuzhuget S. (sailana)	1
190	Nedoborenko K.K. (K_Nedoborenko_64B)	1
191	Fedorov A.E. (Albertos_uwu)	1					ban	ban
192	rasokova (roitiuser1_)	1					ban	ban
193	Manujlova E.A. (LizaManuylova)	1
194	Z Y. (YERL)	1
195	Grakova (grakovka)	1
196	Detskaya A. (detskaya)	1
197	Vardanyan Zh.A. (z.vardi)	1
198	Ajdaeva M.Sh. (marivanka)	1
199	Nazarov (Neislaw)	1
200	Petrukhin M.A. (DidicitDiscere)	1
201	Tarelov A.V. (Alexander_2025)	1
202	Nos Ya. (yana_nos)	1
203	Pottery L. (KishKotenok)	1
204	Murat M. (murat_mukhammed)	1
205	Tyo V.E. (Miracle-)	1
206	Korolev A.A. (Ereticheskij Chajnik)	1
207	Pichugin P.P. (pasha05)	1
208	Urvantseva D.D. (dasha.urvantseva)	1					ban	ban
209	Semenov D.-. (Dmitry.S.)	1
210	Badretdinov A.V. (remodus)	1
211	Spiridonova (speakviki)	1
212	Maslennikov A.S. (Maslennikov.Anton)	1
213	Ivanov (neon77)	1
214	Shajkhutdinov M.I. (mariobraza)	1
215	Pakhomov (play_boy_x)	1					ban	ban
216	Denisova A.A. (@DenNasttya)	1
217	Sokolov Ya.R. (per4ikyar)	1
218	Alekseev E.A. (Xbezy)	1
219	Sokin (jagermeister211)	1
220	Krasotin I.Yu. (Ilya_Krasotin)	1
221	Kulikov I.E. (Memio)	1
222	Komissarova E.A. (guccigova)	1
223	Alieva L.F. (bictimirovaleila)	1
224	Pupkin (Black Ivory)	1
225	myakishev (lampo4kamyak2004)	1
226	Mingazutdinov A.-. (tema_289)	1
227	Tikhonova V.V. (lliieera)	1
228	Domashev M. (Domish)	1
229	Agametova B.K. (Agametova Bella)	1
230	Gamburtseva A.A. (ChehirKa)	1
231	Sergey (Boma)	1
232	Avkhadeeva A.R. (Malinka_tim)	1
233	Kramer E. (lorismelikova)	1
234	Trotskiy M.K. (Mikhail123123123)	1
235	Dement'ev V.E. (Ferocid)	1
236	Unregistered	35

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References