Today's statistics at "SQL Exercises"

June 30, 16:40 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	Plamod'yanov S.G. (plmdnv1)	1			5	6
2	P I.*. (IrinaPetr)	2	1	85		3
3	Nikol'skij I.Yu. (igoryun)	1	1	58		3
4	Skokov B.S. (leks$$)	1	1	36		3
5	Gitinomagomedov (gmansur88)	2	1	61		2
6	Safronov P.A. (Paulus73)	2	1	126		2
7	Kononov M.A. (Lockintosh)	1			1	1	2	2
8	Popova K.A. (Ksen123)	1			1	1	1	2
9	Pichuzhkina O.V. (vyhuholl)	3					64	101
10	Fridman M.A. (MFridman14)	1					ban	ban
11	serva4ok (serva4ok)	1					15	25
12	Kolevatov A. (stopPOWERBI)	2					15	21
13	Koktysh P.R. (iopoio)	1					15	21
14	Smith (JustUser007)	1					12	21
15	Orlov (404_500)	1					15	20
16	Tsyrel'chuk A.F. (ciwu)	1					15	18
17	Suslov (Skyman163)	1					12	18
18	Altashin S.V. (burrito)	2					11	17
19	gama (gamanl)	1					8	16
20	Gur'eva A.A. (g_aa)	2					12	14
21	Loginov A.S. (arien4)	1					9	14
22	Tugdumov B.B. (Badara_01341)	1					8	14
23	Tikhonov S.V. (Sergej Sirius)	1					7	13
24	Shabanova N. (ssssh)	1					7	12
25	Marusich K. (Mar_man)	1					10	11
26	Aldoshina K.V. (gufyfatk)	2					9	11
27	Kirillov (Biglow)	1					8	11
28	Gavrilov V.S. (DjonGold_G13)	1					6	11
29	Sobachkin A.F. (Al_Wolf)	3					8	10
30	Shelekasov (Vasshell)	1					6	10
31	Romanovich V.S. (Panda94)	1					7	9
32	KpocaB4er (kpocaB4er)	1					7	9
33	Amatis K. (Khaintra)	1					7	9
34	Fomina (Julia25!)	1					6	9
35	Voronin A. (icamaoe)	1					6	9
36	Asainov V.O. (crzvldslv)	2					7	8
37	Balandina K.O. (BalandinaK)	1					7	8
38	killlll L. (lilkill)	1					6	8
39	Terekhova D. (Dashielle)	2					4	8
40	Ivanov M.V. (KaIugaS)	2					6	7
41	Sereda M.I. (deadsurfkiss)	1					6	7
42	Tarashev K.A. (KirillT)	1					6	7
43	Limarenko (limarjke)	1					6	7
44	Skriptsov I.V. (ivan.skr)	1					6	7
45	Evseev M.G. (michaelpy)	1					5	7
46	Moldakynov A.A. (Nomad444)	1					4	7
47	no N.N. (FE4uzchik)	1					4	7
48	Sergienko K. (KnightOTOR)	1					6	6
49	Pustovalov A.O. (MasterJaa)	1					4	6
50	Zharchenko Z.S. (wwz_zww)	1					4	6
51	Fedoseev R. (Folker)	1					3	6
52	Barkova N. (nbarkova)	2					5	5
53	Gorbunova (Rainmaker056)	1					5	5
54	Lukishina A. (Nosaki)	1					5	5
55	Todoriko S.M. (todorikosm)	1					5	5
56	Lipin E. (Junior2222)	1					3	5
57	lolkeker I.G. (smetenayoy)	2					4	4
58	dokalin D.A. (IvDok)	2					4	4
59	Talala A.V. (TAB_CL)	1					4	4
60	Denisov (Kot_-_)	1					4	4
61	nex (Nexkex)	2					2	4
62	Fedorov S.N. (__Serg__F)	2					2	4
63	Obukhov (Chto_eto)	1					2	4
64	Shashok (hallucination)	1					2	4
65	test (qwerty37892)	1					2	4
66	Khas Zh. (Quikest)	3					3	3
67	Kovalev N. (Fantasyer)	1					3	3
68	Gavrilkov I. (Ne-Pridumal)	1					3	3
69	Soboleva I.Yu. (Matreshka_)	2					ban	ban
70	Smolenskaya A. (Ridicule)	1					2	3
71	Beketov (becat)	1					2	3
72	Zazhigalkin (kzazhigalkin)	1					2	3
73	ch (yozef)	1					2	3
74	Samsonov A.Yu. (Bot_to_be)	1					2	3
75	Pahadayeu A. (AndOffline)	1					2	3
76	Scherbakov (chYwarY)	1					2	3
77	Komissarov E. (Lalafa1)	1					1	3
78	Khristyuk A.A. (NassKh)	1					2	2
79	NoName (Citramonus)	3					1	2
80	Sokolov S.V. (Madest)	2					1	2
81	Konovalov A.A. (Ne Andrej)	2					1	2
82	Dogadov S.V. (Serzho)	2					1	2
83	Pushkarev S. (PSV_n)	2					1	2
84	Andreev (Vacha)	1					1	2
85	Denisenko E.S. (Denchiklenchik)	1					1	2
86	kalachev R.S. (romankalachev1212)	1					1	2
87	Ivanova (nahi1)	1					1	2
88	Kochetygova (ya_maha)	1					1	2
89	Zubkov D. (Dm54)	1					1	2
90	Iva E.A. (PlatinumKub10)	1					1	2
91	Daron (Daron_g)	1					1	2
92	shizik S.S. (shizoid67)	1					1	2
93	Komissarova E.A. (guccigova)	1					1	2
94	Asanova D. (Diana14)	1					1	2
95	Yazvenko M.E. (Mikhail_32)	4					1	1
96	Familiya A.O. (Alex_PV1589)	3					1	1
97	Vodolazova A.V. (Vodolla)	1					1	1
98	K S. (skryzh)	1					1	1
99	Yakovlev V.V. (vova2plova)	1					1	1
100	Berezovskaya D.V. (dashaeverafter)	1					1	1
101	Stroev A.A. (sni1lout1)	1					1	1
102	Saperov S.V. (s4per)	1					1	1
103	Volkonskaya A. (Asya_V)	1					1	1
104	notus N.N. (NotusS)	1					1	1
105	Koptel'tsev V. (selber)	3
106	Piatigorsky N. (piati)	3
107	kulikova (juepa2)	2
108	Biktagirov R.I. (biktag1)	2
109	Washington G.W. (Aeramas)	2
110	Dettsel' (AlexDET)	2
111	Filippov I. (philippoviv)	2
112	Bogatyrev N.V. (BNV2873)	2					ban	ban
113	Ivanova A.A. (Nasstia449)	2
114	Allaberenov (Asinus_Buridani_inter_duo)	2
115	Taurbek B.D. (Bagy)	2
116	Semenov (asv_1)	2
117	Ivasenko R.A. (Raya Ivasenko)	2
118	Nikitina V. (GinsengStrip2004)	2
119	Williams B. (BW)	1
120	Martynov A. (Ryncol)	1
121	Ivanov (markkram)	1					ban	ban
122	Shythun (Shythun)	1
123	Tkhorev P.A. (Smec)	1
124	Abdulmanapov A. (Dvarik)	1
125	Op (seregaIT)	1
126	Petrov N.V. (Nick21)	1
127	B L.S. (lakshmi kumar)	1
128	Voronov D. (Elnov.70)	1
129	Tsay S. (Sergey Ts.)	1
130	Komarov A.N. (Shveda Saulya)	1
131	Sharipova (fuljencia)	1
132	Ivanov V. (vityansk)	1
133	Ivanov I.I. (vlad91)	1
134	Bridges O. (Oleg503)	1
135	Koloskov (Art_Dart)	1					ban	ban
136	Dmitrieva A.A. (Anastasij)	1
137	Plotnikova Ya.A. (Yana_23)	1
138	Hades (Hades1)	1
139	Petrov P.P. (Pod123)	1
140	Taras D.S. (Parit)	1
141	Mitrey (_mitrey)	1
142	Ershov I. (qzva)	1
143	Koneva A. (Ponya)	1
144	Vyroubalova (Imhelena)	1
145	Filippov T.S. (Barbarbossa)	1
146	Karabanov A.M. (Kus'777)	1
147	Zimin I.V. (KuzmichOK)	1
148	Bitsoev E.T. (Bisotti Eduard)	1
149	Ovsyannikov (Antonius4)	1
150	Sidorova A.V. (AnVaSi)	1
151	Kovalenko A.A. (Andrey86_)	1
152	Ivanov (Katakun)	1
153	Serebro K. (TinochkaSerebro)	1
154	Lavrent'eva I.N. (bibaby)	1					ban	ban
155	fioletovaya (fioletovaya2)	1
156	Rahavy U. (URahavy)	1
157	ss A.S. (SashaSS)	1
158	Torokhova I.S. (abu_muhammad)	1
159	Uspanov I. (depo6765)	1
160	Markelov (PavelME)	1
161	Mazuch N. (nataliammm)	1
162	Kulik A.-. (Bourbon)	1
163	Tyul'berova A. (ann_tyulberova)	1
164	Dvornichenko E.A. (Chaika_)	1
165	Kirikov S.A. (krytye vagony)	1
166	R. (Wra1th)	1
167	Artsyshevskaya I. (esc_del)	1
168	Verdiyants M.K. (mashonka)	1
169	Komov S.M. (Komov S. M.)	1
170	Lysykh V.K. (Usilitel')	1
171	Romanov E.D. (megakiller221105)	1					ban	ban
172	Akameeva S.V. (SVA1)	1
173	Sairanbek D. . (sairanbek_darkhan)	1
174	Ivanov I.I. (meow?s)	1
175	Tulupova A. (morrilina)	1
176	Kukuruza E. (Katrina443)	1
177	Leonov D.V. (xannnnn)	1
178	Mikaya (Gio9248)	1
179	Sar B. (Sobol-08)	1
180	Kasatkin E.D. (Shvins)	1
181	Kurkin T.S. (KTS1995)	1
182	Rafikov G.K. (gog110)	1					ban	ban
183	Gadzhiev (nu3on)	1
184	Bozhesokhraniev (akkord15)	1
185	QWEQWE Q.Q. (GATS322)	1
186	Lyal'kova I.S. (Davydova)	1
187	Petrov A.I. (Tobo-bobo)	1
188	Zamataev A. (zew82)	1
189	Efimova D.A. (efimova_dasha)	1
190	Dey Y.V. (yaroslav53)	1
191	Klepets N.A. (NIkDream)	1
192	Detskaya A. (detskaya)	1
193	S (n1pron)	1
194	Stonis S.O. (Sergjik23t)	1
195	Chepovskaya Yu.I. (Solllary)	1
196	Myrzabek N.K. (nurrrzat)	1
197	Romanov R.R. (Bypecker)	1
198	Temirgali N.K. (NurTem)	1
199	Titov A.-. (ant_tt)	1					ban	ban
200	Sedakov M. (gamigami)	1
201	Travkin A.A. (minon)	1
202	Sal'manov O.P. (3303)	1
203	Salamakhin I. (SQLInz)	1
204	ZH K. (KOKS1996)	1
205	Vendeev R. (Zetalot1)	1
206	L A.S. (antonio01110011)	1
207	Istomin A.E. (iShurik)	1
208	Luchina I.A. (pukpuk2)	1
209	Mark D.D. (Backstrickboy)	1
210	Kurakin (billir)	1
211	Graf (ilves)	1
212	Romanov A. (phantome911)	1
213	Askalenkova M. (miracleapsara)	1
214	Vil'danov A.I. (Mustash)	1
215	Rytikov I. (Ivan_1984)	1
216	Chepkasova P.A. (Polina290701)	1
217	Myasnikova M.S. (iventomori)	1
218	Avamzachemov (cnfrfycdjljq)	1
219	Vil'danov A. (AmalV)	1
220	R E.M. (agenios)	1
221	Baba (Alababa123)	1
222	Ershov (Atman)	1
223	Dudchenko V.N. (nLori)	1
224	Davidchuk (AlexMayuri)	1
225	Shkil' E.A. (newsow)	1
226	Zhuravlyov (glebzz)	1
227	Efremov I.A. (Targeted predator)	1
228	Antonov M.V. (mantan15637)	1
229	Voronin F. (Zipporkk)	1
230	Petrov M.Yu. (DenMax_2026)	1
231	Lupashko A. (Alexei_2106)	1
232	Unregistered	47

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References