Today's statistics at "SQL Exercises"

August 26, 17:46 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	Vinogradova S.M. (Tigra1)	1	1	135		3
2	Tsybin A.V. (magicdragon)	1	1	32		3
3	Serova M.M. (ssss.mmmm)	1			3	3	2	4
4	Berezovskaya O. (Rocksolana)	1	1	1	1	2	1	1
5	Mescheryakova (loli_po)	2	1	1		1	5	5
6	Ivanov (chuvak_bob)	1					15	25
7	Akhsharumova (hi_meow_meow)	1					15	23
8	Assan B. (Kizaru011)	1					15	22
9	Ivanova O.N. (olga_ivanova)	5					15	21
10	Mozgovoj R.A. (Roman17)	5					ban	ban
11	Usanova D.A. (Usanova Dar'ya)	1					15	18
12	Luzhbin E.O. (Kisy_Kisy_Meow_Meow)	1					ban	ban
13	Dimidov M. (Gwinbleiddd)	1					10	17
14	Biru (vika22121)	1					12	14
15	Budyukin L.D. (StanceInfaimm)	1					6	10
16	Erkinbekov A.K. (Aidar1)	3					7	9
17	Pro (SvyatP123)	1					7	9
18	Gizatullin M. (mxgz)	1					7	9
19	Terekhov A. (terekhovart)	1					5	9
20	Zaverschuk V. (kemma)	1					5	8
21	sar G. (konick_gs)	1					5	8
22	Kabanov G.L. (Krotya)	2					6	7
23	Kozhuryakin D.A. (jsilverhead)	2					4	7
24	Markevich (pol^2y)	2					4	7
25	Vasilev (Gurthem)	1					4	7
26	Bezmolitvennaya Yu.V. (yillixx)	1					5	6
27	Konogorskij L.E. (konogorsky Leo)	3					4	6
28	Petsgol'dt P.K. (Pavel1PK)	2					4	6
29	Evseev D. (xOnelinx)	1					4	6
30	familievna (tatianka111)	1					3	6
31	Antoshkin A.A. (Artur_2107)	1					3	6
32	Temlyakova (bibibi)	1					3	6
33	Rakhimbekov D.G. (bariallen)	2					5	5
34	Mitrofanov I.A. (mitroha)	2					5	5
35	Maksimov (SQLlearninginging)	1					5	5
36	Raviks V. (VladisRav)	1					5	5
37	Svetikov (OneRing)	1					5	5
38	Markovtseva (Mika2aj)	1					5	5
39	Kozhukhova E.S. (ElizavetaKozh)	1					4	5
40	Murat I. (Inzhu_murat13)	6					3	5
41	Taurbek B.D. (Bagy)	2					4	4
42	l (loww)	1					4	4
43	Zevakov I. (Bishamon123)	1					4	4
44	Raimbekov E.B. (KlarkKent)	1					4	4
45	Nurmagomedov R.R. (Radix4)	1					4	4
46	Sultanayeva (Lowlights)	2					3	4
47	Ilina N. (lkjahfjkseb)	2					2	4
48	Vakulko A.V. (VAlexandrV)	1					2	4
49	Yusupova O. (Iusupova)	1					2	4
50	Berseneva T.M. (Bersa_3785)	2					2	3
51	Petrov M. (Kozyapkin)	1					2	3
52	Lebedeva E.V. (Lena_Swan)	2					2	2
53	Karniz V. (Realita)	1					2	2
54	Kosatkin P. (PaulTronix)	1					2	2
55	Babkin A.V. (BABKIN394)	1					2	2
56	Bryukhanov A.N. (Antonus)	2					1	2
57	Koprov I.I. (Kopro)	2					1	2
58	Abramenkova (muroni)	1					1	2
59	Sergeev V. (32b)	1					1	2
60	Brajnin S.O. (brusha)	1					1	2
61	Kameneva (kristachak)	1					1	2
62	Makovskaya E. (makowka)	1					1	2
63	Pupkin V.I. (pupk1n)	1					1	2
64	Kukanov D. (kukish_)	1					1	2
65	Kishkurno R.A. (Dyga)	1					1	2
66	Murat M. (murat_mukhammed)	1					1	2
67	Sheimukhov (sheymuh)	1					1	2
68	Urakina K. (Ksu774)	1					1	2
69	Kazantsev V.D. (kentiko_0)	1					ban	ban
70	Lyakh (LinaL_)	1					1	2
71	Sokolkov M.A. (mxzchm)	1					1	2
72	Romanchuk I.A. (ial.romanchuk)	4					1	1
73	Zhur V. (mrvaroz)	2					1	1
74	T E.V. (guru_sql007)	2					1	1
75	Lebedeva N. (natalilebedeva)	1					1	1
76	Sukharev A.S. (A_Greenberg)	1					1	1
77	Lapturova (Meoi)	1					1	1
78	Bogatyrev N.V. (BNV2873)	1					ban	ban
79	Stytsyuk N. (natalia19930420)	1					1	1
80	Antonova (Elena_No)	1					1	1
81	New R.G. (newLogin)	1					1	1
82	Dubinin S. (Stas_5193)	1					1	1
83	Fernandes N.A. (Shadow_hunter)	1					1	1
84	Sarkis'yan G. (gennadi_s)	4
85	Koptel'tsev V. (selber)	3
86	Altashin S.V. (burrito)	2
87	Litvakov D.D. (solarand)	2					ban	ban
88	Soldatov (Li351)	2
89	Kokoulina E.A. (janekoko)	2					ban	ban
90	P I.*. (IrinaPetr)	2
91	Katya (mccat)	2
92	Kostyuchenko (enova)	2
93	Bratsykhina T.A. (tatavia25)	2
94	Ivanov (Ivan337)	2
95	Smanov N.N. (Nurik789456132)	2
96	Uvarov A. (Andrey1234)	1
97	Shibaev (saah)	1
98	Chuchkov O.E. (WIT)	1
99	Markeeva A. (kamenolomnja)	1
100	chaika (chaika_ds)	1
101	Bovbas A. (anton_bovbas)	1
102	Potapov (poga)	1
103	Nazyrov R.R. (Davel)	1
104	Murzikov (TheLion48)	1
105	Chebaniuk (white wolf_1111)	1
106	Galkin D.A. (DanilGalkin)	1
107	Zakharov G. (4atlanin)	1
108	Ti (Ost2020)	1
109	Zhuravlev E. (LuckyHamster.)	1
110	Milyutin (Sevska)	1
111	Baranova T. (Tatti81)	1
112	Kulikov V.S. (VSK99)	1
113	Aleksandrov A.Yu. (AlexandrovAY)	1
114	Ushakov (lllavyb)	1					ban	ban
115	Aro E.F. (Ekaterina Araud)	1					ban	ban
116	Voronin A.A. (DandyDV)	1
117	Skokov B.S. (leks$$)	1
118	Potikhenskij Ya.K. (Potixenskij Yan)	1
119	Gonvharov T. (timurgoncharov)	1					ban	ban
120	Rodin (uoloki)	1
121	NIkolay (Nikilay)	1
122	Skvortsov (RukwoR)	1
123	Sali (Jass_sally)	1					ban	ban
124	Zhmyshenko (notepu1)	1
125	Korovin (Sayder)	1
126	Alex A.A. (alexalex68t)	1					ban	ban
127	Ostanin Yu.A. (yourun)	1
128	Odegov A.I. (KovroLitik)	1
129	R. (Wra1th)	1
130	Bueva A.V. (yeeen)	1
131	Muratov D.A. (Enovostuck)	1
132	Korolev R.V. (zouker)	1
133	Ugadaeva N. (thei_thei)	1
134	Akameeva S.V. (SVA1)	1
135	Ogloblin A. (eturon)	1
136	Chernyshov M.A. (dr. Jim ProSo)	1
137	Elena E.E. (elenaaaaaaa)	1
138	Fandieiev O.V. (999Alex1984)	1
139	Nata (legenda22222)	1
140	Abramov V. (Ichigo Kurosaki)	1
141	Alekseev M.A. (ama2301)	1
142	Burnyasheva A.Yu. (pondquen)	1
143	Nikita (kito4)	1
144	Pryadko A.V. (AdeptMonolita)	1
145	Shakhova M. (maydaymeow)	1
146	Ibo K. (Kemchik)	1
147	Kozhanova T.V. (TKO)	1
148	LbIsy (Bla_Bla_2)	1
149	Chudikov A. (a.chudikov)	1
150	Burtonov A.V. (tak to)	1					ban	ban
151	Lapshin Ya.Yu. (MULTILIB567889)	1
152	Savinova (Alenari66)	1
153	Kuznetsov (Serg0Moiseich)	1
154	edmond2 (edmond2)	1
155	Filippov D.A. (shketik)	1
156	Pupkina (mamamaksa)	1
157	a A.A. (rdctfvygbuhjnk)	1
158	Hen (Henchik)	1
159	Malo A. (meyhom_2)	1
160	Lcdma (LCDM138)	1
161	Kudryavtsev V.O. (VladKudr)	1
162	Filippova T.A. (XnsCKL)	1
163	Bublikov A.G. (geterozis22)	1
164	Surname (Void_107)	1					ban	ban
165	Naor (ruththur)	1
166	Nesterov D.A. (saha909)	1
167	Murlyk M.M. (Myau Murych)	1
168	Zhuravleva S.K. (Vetechka)	1
169	Samsonova (Victoooooria)	1
170	Kashapov K.R. (Silver_Blue)	1
171	Kozlova N. (nadia9823)	1
172	Kutischev N.V. (Nik 78)	1
173	eskov (Enp0s3)	1
174	V (mglyuk)	1
175	Minaev (zelor)	1
176	Galkina E. (Elizaveca)	1
177	Toleeva A.A. (mozgaliya)	1
178	Kirieshka N.A. (nina3747)	1
179	Kudryavtseva V.Yu. (Nikulin_28)	1
180	Unregistered	36

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References