Today's statistics at "SQL Exercises"

November 16, 14:53 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	Strel'chenko A.V. (saphirion)	1	5	63		10
2	Lazarev S.A. (In_Spire)	2			3	3	4	5
3	Ryasn (Nekit125)	1			2	2	2	2
4	Krivtsov R.R. (Krivtcov)	1					ban	ban
5	tarakanov M.D. (starrage)	1					15	26
6	Mamedov B.A. (Burhan12)	1					ban	ban
7	Avdeev M.V. (Maxim_Avdeev)	1					ban	ban
8	Takhm A.G. (TaktakTaktak1)	1					ban	ban
9	Makhmadnazarov E.A. (Eradz1)	1					ban	ban
10	Pirozhkov (Pirozhnichkov A.)	1					14	24
11	Lychagin M.R. (RaMz1s)	1					ban	ban
12	Sal'nikova M.Yu. (mar1na7)	3					12	19
13	Sukhotin A. (Artem_77)	1					ban	ban
14	Yanov (qwegul)	1					11	19
15	Prezhennikova I. (Inessics)	2					15	18
16	Shnipov A.A. (Tony_Kapuchi)	1					12	17
17	kikiki (Swew)	1					12	16
18	Mikhajlov (fysooome)	1					9	15
19	Romanov R.R. (bubilda1234)	1					8	14
20	Volchek D.S. (DeN4iG23)	1					10	13
21	Odnokurtsev (AlFochino)	3					7	11
22	Kashina Ya.V. (Yaroshka)	2					7	11
23	Idrissov Y.A. (Kosharik_545)	1					6	10
24	Birbin S.Yu. (Stasevich)	1					6	10
25	Dumenkov M.A. (maxodum)	1					6	9
26	Bobretsov V.A. (Sups312)	1					5	9
27	Kuleshova I.A. (KIra06)	1					5	9
28	Chernova P.E. (wrtpoh)	1					5	9
29	Shestakov E.D. (wnwnkm3)	1					5	9
30	Vukolov A. (al.vuk)	2					3	9
31	Arkhipova A.V. (Rishaoa)	1					7	8
32	hitev E. (e_hitev)	1					5	8
33	tigerleopard (ttigerleopard)	1					5	8
34	Galkin A. (agm10)	3					4	8
35	Stepina A.K. (rekowa)	1					5	7
36	Logutov D.Yu. (Logutov Danil)	1					5	7
37	Rots (myrtyx))	1					4	7
38	Egorenko A.I. (Zvezdica)	1					4	6
39	zhigmitova K.S. (karinika)	1					ban	ban
40	Oreshkin M.V. (pebkr)	1					5	5
41	namrozar R. (namrozar)	1					4	5
42	serikova L.A. (lunaraserikova)	1					3	5
43	Komarov R.V. (Roman_Valerievich)	1					3	5
44	Babaev (floydtmb)	1					4	4
45	Merkulov A.D. (ParabellumKS)	1					4	4
46	Baranov M.E. (Maska9)	1					4	4
47	Petukhov M.D. (Rolland Ultra)	2					2	4
48	Ganiev E. (ProstojPsevdonim)	1					2	4
49	John (yakovleval123)	1					2	4
50	Tikhonova M. (timary98)	1					2	4
51	Politov (Eugene01)	1					2	4
52	Sotov D. (dan_wygd)	1					3	3
53	Bashlachyov (a8)	1					3	3
54	Verevkin A.V. (Anndrreyy)	1					2	3
55	Popkova A.D. (nastya_spec)	1					2	3
56	Safronov P.A. (Paulus73)	1					2	3
57	Azyamova (aplleian)	2					2	2
58	Mironov O. (Psychotronic)	1					2	2
59	Scherbina S.A. (shcherbinator)	1					2	2
60	Mikhalev D. (dimab00ss)	5					ban	ban
61	Chesakov D. (danyache)	1					ban	ban
62	Prutenskij A.A. (Prutenskij A.)	1					1	2
63	Rudnitskiy R. (rudikBro)	1					1	2
64	Ivanov V.I. (Vasilij1980)	1					1	2
65	Akhtyamov D.G. (Akhtyamov)	1					1	2
66	Miroshnichenko E.K. (hulk00)	1					1	2
67	Van D.B. (ari100crat)	1					1	2
68	Kondratyev G. (curlypop)	1					1	2
69	Pupkin V.F. (CloddeOperator)	1					1	2
70	Gusakova O.P. (Oksana Gusakova)	1					1	2
71	Khudzhanazarov O.Sh. (oleg_52)	1					ban	ban
72	Alekseev A.A. (A1ekce187)	1					1	2
73	Li E. (elli3107)	1					1	2
74	Black M. (qwe132)	2					1	1
75	G (rubiksphere)	2					1	1
76	Kuragin D.V. (AlexDubson)	2					1	1
77	zov (zov11)	1					1	1
78	Abramov V. (Vitaminez)	1					1	1
79	M (DanilM2304)	1					1	1
80	Vikulov M. (mavikulov02)	1					1	1
81	Kirichenko A.A. (Dartchen)	1					1	1
82	Oks (kir_oxx)	1					1	1
83	Churyukin A.S. (AChuryukin)	1					1	1
84	Matsakyan A. (matsakyan)	1					1	1
85	Kamazin (PiskaKiska)	4
86	Orlov I.V. (867543)	4					ban	ban
87	Kucheryavenko G.G. (Twist658)	3
88	Ten S.L. (104kse)	2
89	Akhmedov K. (Kurb)	2
90	Sarkis'yan G. (gennadi_s)	2
91	Kalashnikova A.K. (anzhelikakalashnikova)	2
92	Komov S.M. (Komov S. M.)	2					ban	ban
93	Vinogradova E. (-Helen-)	2					ban	ban
94	Linkevich P.G. (PavelLinkevich)	2
95	kir (vankir)	2
96	Karpov E.A. (KarpovEA)	2					ban	ban
97	Tkachenko A.P. (Tkach401)	2
98	Skor (bl_s_123)	2
99	Yakhtina (Kris07)	2
100	Polezhaev (Kirill123321)	2
101	Gorbunkov M.S. (gms)	1
102	Fedorov Y. (jarda)	1
103	Reutov A.A. (andrei1994)	1
104	Strel'tsov V.A. (develo3r)	1
105	a A.A. (Artur1q)	1
106	Kurtykina V.S. (VKurtykina)	1
107	Krivosheenkova A.A. (Krivosheenkova_Alina)	1					ban	ban
108	Kondakov (staryded)	1
109	Borschovetskij I.N. (Igor2.0)	1
110	Bondar' A. (arina_bonn)	1
111	Kuptsov M. (adv4ce)	1
112	Kra (UKra_17)	1
113	Menzhunova D.V. (menzhunova)	1
114	hero H.M. (heromaster)	1
115	Krasnij N.O. (komnesychka)	1
116	Rudnev V.V. (pazartesi)	1
117	Apanasevich V. (vladislav61)	1					ban	ban
118	Karpushenko A.P. (fenris06)	1
119	Evgen'ev (arsen0__0)	1
120	Sokolovskij B. (BS89)	1
121	Demidov Z.I. (Zak2013)	1
122	Safaryan E.A. (edgar06081986)	1					ban	ban
123	b (jozik123)	1
124	Do T. (asukakurashina)	1
125	Kushnir S.A. (Wishmaster190281)	1					ban	ban
126	Ivanov (userTest1)	1
127	Rakshin M.R. (qsekka)	1
128	Ikryanikov D.S. (Danila_I)	1
129	Ziterev (Batysai)	1					ban	ban
130	Odegov A.I. (KovroLitik)	1
131	Pogrebnyak I.V. (Irina Pogrebnyak)	1
132	R. (Wra1th)	1
133	Finogeev M. (MaxFinog)	1
134	Kozlovskij R.E. (altimariven)	1
135	Bazhenov S. (bober25)	1
136	Lysykh V.K. (Usilitel')	1
137	G R. (contemplative)	1
138	tomer T. (chtomer)	1
139	Zakirov I. (coronets1)	1					ban	ban
140	Kuftina A.O. (Kuftina)	1
141	Ivanova I.I. (Brungilda924)	1
142	Plekhanov A.M. (Anton_Plekhanov)	1
143	Belyavskaya M.I. (Maria101106)	1
144	Koskov A. (wasabitrue)	1
145	Gotal'skij (IvanGot)	1
146	Gaponova (chvo)	1					ban	ban
147	Oschepkova V.A. (Viktoriya Oschepkova)	1
148	Bogovarova A.R. (sassshhhkkka)	1
149	Grineva M.S. (gm_r)	1
150	Shamyr (2010p)	1
151	Zim K.V. (K__I__Z)	1
152	Erzhov (pepsik)	1
153	Galatsan I.V. (Igorgal)	1
154	Pupkin V.T. (Dokiki)	1
155	Esakova K.O. (ksuesakova)	1
156	Yovik A.V. (lehin_92)	1
157	Bochkarev E. (Cringe758games)	1
158	Majstrovskij A. (AXO7908)	1
159	Bushelovskij A.E. (Greshniik)	1
160	Belyakova K.S. (kira_kek)	1
161	Nasibbeyli C. (REIS)	1
162	Kormilin A.A. (Aleksandr Kormilin)	1
163	Nikiforov D.V. (Kemi)	1
164	Chirkov E.Yu. (EgorChirkovchik)	1
165	Kudryavtsev A.A. (Tiket)	1
166	Chikovani L. (compgeek123)	1
167	romPro18 A.A. (romPro19)	1
168	Aleksandrova V. (VolhaAlex)	1
169	Aleksashkin S.A. (Algerdavich)	1
170	Lautermil'kh A. (lrsck)	1
171	Testovyj T.T. (TestikTestovik)	1
172	Strel'tsova Yu.V. (Belle.y)	1
173	Kyazymov A. (GOOP)	1
174	Mal'tseva A.M. (Mal'tseva A.M.)	1
175	Marazhan B.D. (Birzhanpvl)	1
176	Smirnova E.A. (El'm)	1
177	Esina O. (piolpa)	1
178	topuria (jarji uwu)	1
179	Iytrf (SqlBoss_3655)	1
180	Unregistered	13

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References