Today's statistics at "SQL Exercises"

March 15, 16:14 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	Uldanov M.R. (marsel16)	1			13	17	ban	ban
2	Golinskij M.O. (motcan2)	1			5	6
3	Kim A.V. (epidersis)	2			3	3	15	22
4	Makarov I.A. (_Bkmz_)	1			1	3
5	Odnokurtsev (AlFochino)	2	1	63		1
6	Bredikhin M. (maxim_bredikhin)	1	1	5		1
7	idiris N.R. (1ndibi)	1					ban	ban
8	Baktiyar D. (1ndi1i)	1					ban	ban
9	Ozerova (ai_06)	2					ban	ban
10	Ladygin V.D. (Vladimir777Lad)	2					15	26
11	Ambartsumyan A.A. (ASH2005)	1					15	26
12	Kurnushkina V.I. (KUR_Valeria)	1					15	26
13	Schelkanova D.V. (zldwzh)	1					ban	ban
14	Levin E.A. (egor_oracle)	1					ban	ban
15	Motorina A.D. (@astrid_sun)	1					15	25
16	Talankin G.S. (GeraDezer)	2					18	24
17	Pil'chinov I. (Sengoku)	1					15	22
18	Myatezhnyj A. (b47cc)	1					15	21
19	Toleubay S.T. (sandugash Toleubay)	1					13	21
20	Roj N.V. (rony55555)	2					15	20
21	Tischenko (Slisen)	1					15	20
22	Uldanov M.R. (marsel14)	1					15	20
23	Pushkarenko K. (ksensennn)	1					ban	ban
24	Tischenko V.A. (tva12121)	1					ban	ban
25	Stefanov (Botanick_123)	1					15	18
26	Ladygin V.D. (Vladimir7799)	1					15	18
27	Kosov K. (Vertigor)	1					10	17
28	Sol D. (CooStin)	1					ban	ban
29	Maslov (sevack)	1					13	15
30	Velibekova Yu. (yulialibs)	1					9	15
31	Gusev A.O. (NowOrNever)	3					6	15
32	Muldasheva A.M. (askolok)	1					7	12
33	Ais (SQLPractica)	2					8	10
34	Anokhin G.R. (Georgii1234)	1					7	9
35	Uldanov M.R. (marsel13)	1					6	9
36	Q W.E. (DandyDaBeast)	1					5	9
37	Tereschenkova D. (daria095)	1					5	8
38	Grigoriev (drew.gg)	1					7	7
39	Bykasova K.V. (asteriaRay)	1					6	7
40	Balandina A.E. (agentshmelis)	1					6	7
41	Doe (Doe123)	1					6	7
42	Fedorov K. (kira q)	1					ban	ban
43	Aksenov (NomenChok)	1					5	7
44	Kalinovskaya O. (OlesyaKalinovskaya)	2					5	5
45	apple_city B. (mr_exclusive)	1					5	5
46	Nov I. (indels)	2					ban	ban
47	Kostarev M.A. (MaxonProverennye)	1					4	5
48	Kurbanov (gixmane)	1					3	5
49	urbanizzz (urbanizator)	1					3	5
50	Zergin Z.Z. (loaqdev)	2					4	4
51	Shipotko A. (Artem S)	1					4	4
52	Kostin M.A. (marboss)	1					4	4
53	Kon'kov G. (garrykonkov)	1					3	4
54	Kirpichnikov I. (kirp777)	1					3	4
55	Shulyagina A. (gingerr)	1					ban	ban
56	Ershova V.V. (vera1507)	2					2	4
57	Kopylov (vanya_241105)	2					ban	ban
58	Roschin A.M. (Alexendero)	1					2	4
59	Zubov V.N. (VITALIY777)	1					2	4
60	Bobrovnikov V.V. (salttea_)	1					2	4
61	Krivov D.L. (Dietrich Mannski)	1					2	4
62	Chernyakova N.V. (Nimfa&)	1					2	4
63	Lalova E.S. (Lalova_K)	1					2	4
64	Khamizova M.S. (Mkhs)	1					3	3
65	Shibaev (orman)	1					3	3
66	Yuzhakov (PeacefulDoggo)	2					2	3
67	Kolobovnikov B.R. (bodyan42)	1					2	3
68	Zajtseva (MZay)	1					2	3
69	dfgh (qwet45)	1					2	3
70	Rybkin (Schmeller)	1					2	3
71	Can (svetonik)	2					2	2
72	Barbarina D.A. (dariaSA)	2					2	2
73	Mikhalkovich I.B. (FirePhantom)	1					2	2
74	R. A. (Erayo)	1					2	2
75	Vetrenko I.D. (Esmiral'da)	1					2	2
76	Kashina K.V. (KKseniia)	1					2	2
77	Z (ZaharAnna)	1					1	2
78	Grozovskij F.M. (fgrozovskiy)	1					1	2
79	Kim A.S. (Aleksandr_Kim)	1					1	2
80	Feoktistov (oleg-ff)	1					1	2
81	Volkova S.D. (sofyaaa)	1					1	2
82	Alpeis A.Z. (Aruzhan Alpeis)	1					ban	ban
83	Pelepelin A. (ToniMekh)	1					1	2
84	Auezova (Soul66)	1					1	2
85	Delolio N.A. (Corvus Corax)	1					1	2
86	Russkikh A. (AnnaR7)	1					1	2
87	gabaraev D.Z. (davidgg)	2					1	1
88	Frolov I.V. (Zevs pitbul')	2					1	1
89	Voronina E. (Privety)	2					1	1
90	S (Malikosha)	2					1	1
91	Kuznetsov E.I. (zorkkey)	1					1	1
92	Otradnov (Sdn19012026)	1					1	1
93	Andreev M.Yu. (Asaru888)	1					ban	ban
94	Kokin A.D. (Heoyong)	1					1	1
95	Osipov N. (Keil)	1					1	1
96	Mazur Ya.E. (yamazur)	13
97	Fromet (1amy1)	6
98	Vdovin S. (Rujan)	3
99	Kurochkin P.A. (qwrqwr)	2
100	Vinogradova S.M. (Tigra1)	2
101	Ivanov (Chio)	2
102	Lazareva E.V. (snatcat)	2
103	Chiranov M.O. (chiracredible!)	2
104	Letyanina I. (Ezzaria)	2
105	Mazanov (Cepnoj)	2
106	Streletskij (Cheburator300056v)	2
107	Davlatov I.M. (Leiurus)	2
108	Taranets A.A. (AnaStar)	2
109	Ch R.V. (rvch)	2
110	Moiseenko S.I. (mois_)	1					ban	ban
111	Krasovskij E.A. (pegoopik)	1
112	T (GT)	1
113	Koptel'tsev V. (selber)	1
114	Soldatov G. (ggwpez)	1
115	Mamedov (gidMAD)	1
116	Stepanov K. (Crystal_0wl)	1
117	Sorokina E. (Kate.sql)	1					ban	ban
118	Grustnaya (Grusthaya)	1
119	Komarov A.N. (Shveda Saulya)	1
120	Yakovleva (kris123456789)	1
121	Sherstnev I.V. (sherstnev.iv)	1
122	Bunin I.S. (Tobol'tsev)	1
123	Lazaruk A.A. (Big_boss)	1
124	Romanov R.S. (Romanov_Roman)	1
125	Naumov (Ghostwheel)	1
126	Sarkisyan E.M. (hoop3r)	1
127	Ch Ya.S. (Extranjera)	1
128	Kim A.D. (Andrew212121)	1
129	Bogorad M.D. (maksimBd1)	1					ban	ban
130	Malakhova (Erioko)	1
131	Vikhrov N.S. (AlanSlueth)	1
132	Vasilov R. (Nozort123)	1
133	Sidorov K. (Akv1lon)	1
134	Arakcheeva P.A. (Polina_Arakcheeva)	1
135	Sarkis'yan G. (gennadi_s)	1
136	Bykov (sky-shore)	1
137	P Yu. (sh_er66)	1
138	Bagirov S.E. (6lackwine)	1					ban	ban
139	Kharchenko (data_bartender)	1
140	Dvornichenko E.A. (Chaika_)	1
141	Odegov A.I. (KovroLitik)	1
142	R. (Wra1th)	1
143	Novikov M.R. (novikov2050)	1
144	Fursov G.S. (derg54)	1
145	Komov S.M. (Komov S. M.)	1					ban	ban
146	Novikov I.D. (InDel)	1					ban	ban
147	Lysykh V.K. (Usilitel')	1
148	Ivan I.I. (redwood_msk)	1					ban	ban
149	Kokin Z. (FlexTure)	1
150	Kislyakov D.V. (EggDestroyer)	1
151	Solov'eva (Lisitsa)	1
152	Fandieiev O.V. (999Alex1984)	1
153	Ivanov P.P. (PavelPLAT)	1
154	Cherkashchenko V.C. (KOTYARA12)	1
155	Samazaniev R.I. (Rus3000)	1
156	Grebenkin D.V. (denchan)	1
157	Mozol' R.A. (stxnxhxxd)	1
158	Kolobin N.S. (gerod0t)	1
159	Bratkovskaya (A.Bratkovskaya)	1
160	Leonov D.V. (xannnnn)	1
161	Kubyshkin R.V. (Rm.kubyshkin)	1
162	Zhivotenko N.I. (Kolya777.21)	1
163	Slugin E.E. (rawelaw)	1
164	Pavlov M.V. (truman_66)	1
165	moon (__moon__)	1
166	Prosyankin A.O. (Aventurine7777)	1
167	n A.N. (Fra1z)	1
168	Zhuk V.R. (loniloum)	1
169	Deev A. (fhh)	1
170	Addanki G. (Dog Lover)	1
171	Bogdanov (Viagod)	1
172	Catherine (Cat_05032026)	1
173	Shulaev D. (vartovec)	1
174	Taubayev Y.O. (eraqa)	1
175	Filonenko M.V. (MariMari0)	1
176	Lutsishin D.I. (dima_lutsishin)	1
177	Zajtsev B.M. (BoryanMZaitsev)	1
178	Lee (DIM_2345)	1
179	Isaeva (Juliaisa)	1
180	Chem M. (Villentrete)	1
181	Polyanskaya (0livkaa7)	1
182	Yurov S.A. (serega48lip)	1
183	Petukhova V.V. (azukitarina)	1
184	Vikhrov N. (Nikita_vikhrov)	1
185	Titkov D.M. (cans1zz)	1
186	Tabar (Tabar_)	1
187	Matochkina (matochkina)	1
188	Arutyunyan A.R. (Armen212)	1
189	Bushaev V.A. (bushaev)	1
190	Wasp E.G. (Elinoise)	1
191	Korotkij E.P. (Kapitan Egor)	1
192	Borodulya A.V. (AlexandroB)	1
193	Unregistered	17

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References