Today's statistics at "SQL Exercises"

April 17, 15:25 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	Nazarova V.K. (varya_nazarova)	1			16	19	ban	ban
2	FG A. (StasyaSP)	1			6	8	2	2
3	Volkova M.V. (Marie_Kova)	1			5	6
4	Odnokurtsev (AlFochino)	4	2	95		3
5	DO R.M. (danchikPi)	1	1	23		3
6	Klyavlina V.S. (mc_flurrry)	1			3	3	8	10
7	Vasev A.V. (Vasev_Aleksey)	1	1	34		2
8	Kislekov A.M. (Panzerkampfwagen)	1	1	24		2
9	Gorbunov M.S. (gms)	1	1	19		1
10	Potemkin (Yazon_79)	1	1	-16		1
11	Nikolaev A.N. (n1kolaevs)	1					13	30
12	Safonov (pupupum)	1					15	26
13	Yagudin (PLink1)	2					15	21
14	Orlov D. (MulTTiK)	2					13	16
15	vb G.G. (ALIjj)	2					ban	ban
16	Rzaev (tgrnk)	2					10	15
17	Bochkareva A.A. (Fra1n)	3					11	14
18	Akhmel'zyanov D.Z. (Damirich174)	1					10	13
19	Alekseeva A.V. (Konfetka585)	1					8	13
20	Yusubov I.N. (IsaYusubov)	1					8	13
21	Askhat B.O. (Shag-Foal)	1					9	12
22	Kil'ka (lazzzarev)	1					9	11
23	Yakubaeva A.V. (YakaY)	3					8	11
24	weq Q.Q. (leoboss)	2					8	11
25	Serdyuchenko E.Yu. (eserdyuchenko)	1					7	11
26	INikolaev I.M. (Ivan28429)	1					8	10
27	Glukhov A.E. (Bobik322)	1					7	10
28	musaliev B.B. (mbpride)	2					6	10
29	Nikolaeva M.Yu. (mrooozzz)	2					7	9
30	Kostylev (bobirechek)	1					7	9
31	Bubin (Prokrastinator Andre)	1					7	9
32	Boeva O.M. (olga_boeva77)	1					6	9
33	Zhavoronkina M. (maria zh)	1					6	9
34	Skald (RussellSk)	1					5	9
35	Myagkova M. (myagkovam)	1					8	8
36	Malkova E.I. (Lacher1)	2					7	8
37	Safronov A.S. (Gogen)	1					7	8
38	Maslov N.O. (Nikita_Volgograd)	1					6	8
39	Gabdullina (kharkovskaya)	1					5	8
40	Konstantinov -.-. (vasya132123)	1					5	8
41	Nurbaev V.V. (Ulanovka)	1					5	8
42	Efimov V. (YOLMMi)	1					7	7
43	Baral S.S. (dakudaddy)	3					6	7
44	kashirina K.S. (ammme)	2					5	7
45	Cidoruk M.A. (Marika2507)	1					5	7
46	Krylova D.A. (krylovada)	1					5	7
47	Klimachev L.S. (12345norm)	1					5	7
48	Shnar A.M. (Al1405)	1					4	7
49	Kolesnikov A.E. (Ellety)	1					6	6
50	Kukshinov D.S. (DanFort1)	2					5	6
51	Chernyshev A.D. (MakedonskijTsar'IBog)	1					5	6
52	T (aksined888)	1					4	6
53	Shitsyn T.A. (Yota611.)	1					4	6
54	Vlasova (LilSvin)	1					4	6
55	Lobanova M.L. (lobanovamariya)	1					3	6
56	Andreev D.I. (Rusinov Aleksej Mak)	1					5	5
57	Khrupkin V.S. (CordloPerdlo)	1					5	5
58	Familiya I.O. (Aura0)	1					5	5
59	A (Gaborik)	1					5	5
60	Inanova N. (NaydenaGinger)	1					4	5
61	Tajgina A.R. (Tayone)	1					3	5
62	Vladimir (Vovzes)	2					4	4
63	Manasyan V.A. (Vika543)	2					4	4
64	Boldov (LilyaEpitet)	2					4	4
65	adasdasdw (kololkikfon)	1					4	4
66	Alekseev A.S. (Andser)	1					3	4
67	Yushina A.N. (Student63)	1					3	4
68	Batashova S. (sbatashova)	1					3	4
69	Vasil'ev (GudiniMoonlight)	1					3	4
70	yakov (yakov19961)	1					2	4
71	Fedorov K. (kira q)	1					ban	ban
72	Almazova N. (nurkyial)	1					2	4
73	Afanas'ev V.A. (AVA_13)	1					2	4
74	Lyal'kova I.S. (Davydova)	1					2	4
75	Filippova K.S. (rogedeerk)	1					2	4
76	Vasyukova V.I. (wwwowww)	1					2	4
77	Klepikov A. (AntonKlepikauu)	1					2	4
78	Marlow J.J. (joe65536)	1					2	4
79	Bocharova V.E. (Malvisa)	1					2	4
80	Miroshkina (Miroshka)	1					3	3
81	abakumova S.I. (abaqmova)	1					2	3
82	Mikaya (Gio9248)	1					2	3
83	Gorokh U.R. (uly5465212)	1					2	3
84	Novitskaya (Katinn)	1					ban	ban
85	Mamelin D.A. (REDLESS)	1					1	3
86	Panicheva V.D. (_Vika_)	1					2	2
87	koma K.K. (koma/aaa)	1					2	2
88	Fedorov (manul115)	1					2	2
89	Petrov N.V. (Nick21)	2					1	2
90	Teterin R.V. (virast)	2					1	2
91	Bogatyrev N.V. (BNV2873)	2					1	2
92	Salazar (Mirazuz)	2					ban	ban
93	Bar N. (19_Nikol@y91)	2					1	2
94	Z Y. (YERL)	2					1	2
95	Sibirkin Yu.P. (ReturnToVictory)	1					1	2
96	Pozdeeva M.A. (mashapozdeeva)	1					1	2
97	Ivanov I.I. (sql_svinger_double_finger)	1					1	2
98	Popov D. (linklib.web)	1					1	2
99	Leonenko V.A. (Leo228007)	1					1	2
100	Kor (girlwithdata)	1					1	2
101	Islom M. (fr0stman)	1					ban	ban
102	Markova T. (Tata2211)	1					1	2
103	kir V.U. (Linay11)	1					1	2
104	Nosonov M. (Magne)	1					1	2
105	Zadonskaya E. (zundens)	2					1	1
106	Sokolov S.V. (Madest)	1					1	1
107	Nasibullina G. (anomaly1)	1					1	1
108	1 V.1. (WZell)	1					1	1
109	Balakina E.D. (balakina)	1					1	1
110	Kudryavtsev V.P. (Kudryaxd)	1					1	1
111	Sterkhov (ElecSir)	1					1	1
112	Afanas'eva D. (lskmgjoisljkgdf)	1					1	1
113	Mad'yarov (Ndrix)	1					1	1
114	Plavskikh (Aaap)	1					1	1
115	Shablinskiy M. (puqupu)	1					1	1
116	Pichkalyova M.A. (Maria____17)	1					ban	ban
117	Shutova P.A. (iolin)	1					1	1
118	Rusinov A.M. (AXTR)	1					1	1
119	Mulyukina A.R. (carolinaredeyes)	1					1	1
120	Efanova S. (kitsuneho)	1					1	1
121	M (DanilM2304)	4
122	Koptel'tsev V. (selber)	3
123	Z A.I. (kindafaekQA)	3
124	Baskal (Bairal)	3
125	Komov S.M. (Komov S. M.)	3					ban	ban
126	Shvetsov D.Sh. (DanechekSw)	3					ban	ban
127	Sil'van (silvr)	2
128	Sergachev A. (SDAndrew)	2
129	Turbabin A.I. (Yanissaari)	2
130	Gusev A.O. (NowOrNever)	2
131	Podgajnyj V.I. (Stalkon117)	2
132	Disyun K.E. (OkLexi)	2
133	Sokolov (zelenogrodov)	2
134	Zhidkikh I.A. (Ivan.Zhid197)	2
135	Gamova E. (Ekaterina_gam)	2
136	Shakirova Zh.E. (Akinoame1)	2
137	Qodirova S.O. (Eurus)	2
138	Tereschenko M.Yu. (MishaaT)	2
139	Bondarchuk V. (Bonikrus)	2
140	Odintsov K. (Odintsov)	2
141	shilkin (Shilkin4.0)	2
142	Shibaev (saah)	1
143	Kurochkin P.A. (qwrqwr)	1
144	Pastukhova Yu.G. (yulianka)	1
145	Levchenko F.V. (-=Lion=-)	1
146	Polyakov V.M. (rock_4)	1
147	Sigankov V.I. (vasilyvanc)	1
148	Petrov (Steamboat)	1
149	Abdulmanapov A. (Dvarik)	1
150	Sobolevskaya V.A. (axfomoss)	1
151	Varganov (Varganovk)	1
152	K L. (leonoid)	1
153	Nikol'skij I.Yu. (igoryun)	1
154	Krivchun D.S. (Den2i)	1
155	eqweasdd (alexa123123gth)	1
156	Abilkasimov I. (Pythonbek)	1
157	Sergey (Floony.by)	1
158	Sel'dereev A.T. (ironduck)	1
159	Lipov D.A. (lip_da)	1
160	GOLTSOV D. (sql-learner21)	1
161	Malykhin A.E. (Katakuri)	1
162	Kedrin V.S. (SibViking)	1
163	Vdovin S. (Rujan)	1
164	Bogorad M.D. (maksimBd1)	1					ban	ban
165	Chirkov K.I. (Kirillion)	1
166	azunai (Azun4i)	1
167	Pavlova N. (npavlova)	1
168	Idrisov M. (Marik_80)	1
169	Ponizovkina A.I. (wolfyrose)	1
170	Vydysh P.V. (Vydysh Pavel)	1
171	Stepanov V.S. (luc1o)	1
172	Shikov V. (Viktor_TG)	1
173	Loginov S. (loginov_sql)	1
174	nektov (Nekto95)	1
175	Sarkis'yan G. (gennadi_s)	1
176	Simonov A.A. (MedveD11)	1
177	Belousov D.I. (DmitriyB31)	1
178	Petrov I. (btophikmeh)	1
179	Gretskikh M.S. (Greckih)	1
180	Wilkinson (Thomas_Wilk)	1
181	Odegov A.I. (KovroLitik)	1
182	Sviridov D.V. (dan20qwrt)	1
183	R. (Wra1th)	1
184	mivanov M.D. (it.annnnnnn)	1
185	- (hasturabyss)	1
186	Stepanov (LexFrom)	1
187	Doroshevich A.R. (Alexei2019)	1
188	Shevyrev R. (shev10)	1
189	Alek (litvin001)	1
190	Lysykh V.K. (Usilitel')	1
191	TVE (Khozyain)	1
192	Skoigor (poehali)	1
193	Gazizov (garif52)	1
194	Mityulin A. (Andrey_Mi)	1
195	Borodin V.A. (Ludoman)	1
196	Sal'nikova A.A. (Selena123)	1
197	Denisov N.A. (colorized!)	1
198	Atashkhoja A.K. (Khan_38013)	1					ban	ban
199	Krasnolobov A.A. (supporter1101)	1
200	Eugene (home_head)	1
201	Konovalov (JustUty1)	1
202	kotikov (airat_kt)	1
203	Pan'shina A.G. (AlexashaKim)	1
204	Matytsina (Vetra)	1					ban	ban
205	Bykov (DK1717)	1
206	Altynbaev T.A. (14KARAT-prog)	1
207	D V. (DlytexKtoPoidetSledom)	1
208	Parshukova (qwq3434)	1
209	R. A. (Erayo)	1
210	Soryu A.L. (RemiliaScarlet3)	1
211	Musaeva S. (Saidochka)	1
212	Tukeshev U.K. (Ulan Tukeshev)	1
213	Lekomtsev (Teck-)	1
214	good_guy (borisiuk_sql_13)	1
215	Pribluda A.V. (anti-tank_hedgehog)	1
216	No (TenG0)	1
217	Polosina (Anastaiia)	1
218	Tarabukin (Markit125)	1
219	Sharapa A.V (LX26)	1
220	Nesterov A.M. (MrmeEnoq3)	1
221	Markov M.M. (Kul'minatsiya)	1
222	Bogacheva (olllb)	1
223	Shevtsov V.D. (shevablash)	1
224	de sad D. (darius de sad)	1
225	Natarova (EvaNat)	1
226	Bayazitov A. (teenromance)	1
227	Khrisanov A. (TeXHuK_21)	1
228	ismailov I. (spectra)	1
229	Vinnikov I. (Ivan_Vinn)	1
230	Kornovan D. (DFK_1991)	1
231	Unregistered	29

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References