Today's statistics at "SQL Exercises"

September 23, 13:00 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	Belyaev (BelyaevK)	2			2	3
2	Kuleshov (kd-1401)	2	1	-4		2
3	Skokov B.S. (leks$$)	1	1	50		1
4	Pogosyants (Ivan338)	1					ban	ban
5	Gimazetdinov F.R. (Fargat)	1					ban	ban
6	Ostrovskaya M.S. (marusya67)	1					15	27
7	Zhorov (zefir123)	1					14	27
8	Bagirov A.Sh. (misha_bagirov221)	1					15	25
9	Kolevatova E.A. (KaterinaKol)	1					15	25
10	Zov (Dildobek1488)	1					15	25
11	Amirov A.A. (Pablo67)	2					15	24
12	Kozlova A.P. (nesteaeeqq)	1					15	24
13	Surikova M. (melaniyasurikova)	1					15	24
14	Surikova M. (pupupuitxrf)	1					15	24
15	Pshenov (ktjybl)	1					14	24
16	elinyankin (mashakasha)	1					13	24
17	Kanetskij A.M. (ancami)	2					15	23
18	Tudvasev Vinogradov V.V. (ikonasql812)	1					13	22
19	Kazhin A.M. (Kazhin A)	3					15	20
20	Bondarchuk G.V. (Gosha11112233)	1					12	20
21	Bolgova D. (Klyrzx)	1					15	19
22	Holoes H.H. (HoloES)	1					15	18
23	Orudzhov E.Ya. (Eltun)	1					15	18
24	Bobrov M.A. (Bobrov Mikhail Alekseevich)	1					11	18
25	Michael L.M. (sayzmyname)	1					14	17
26	Kondrat'ev A.A. (k0nderr)	4					10	13
27	Sivovolov L.M. (SivLevSLM)	1					10	13
28	Sharov M.K. (mqxshaaa)	1					8	13
29	Shikhalev (artemy1)	1					9	11
30	Allayarova E. (Alas_ka)	1					8	11
31	Stefurak (AleksandrStf)	1					7	11
32	Kaminskij (SKY123)	1					8	9
33	Morozova A. (Schwarze_Katze)	1					7	9
34	OmegaLab (OmegaLab)	1					7	9
35	Sheludyakova (ShellSight)	2					6	9
36	Barashkin A.A. (conquru)	1					5	9
37	Umap J.A. (Janhavi667)	1					5	9
38	Tugdumov B.B. (Badara_01341)	1					ban	ban
39	Milshteyn E. (Mile00)	3					6	7
40	Kitaeva Yu.V. (Yk_ka)	2					ban	ban
41	Persikov T. (Toni6767)	3					4	7
42	Petrov D. (pdmitriy687)	1					ban	ban
43	Zhabina I.S. (Irina Zhabina)	3					3	6
44	S (Tinkershock)	1					3	6
45	Rusina (Luch_21)	2					5	5
46	Amrita (1Samir)	2					5	5
47	Grimberg (grimrheim)	2					5	5
48	Kund O.K. (onya457)	1					5	5
49	Urakin A.V. (Selper)	2					3	5
50	Kozlov I.S. (ivank88)	1					3	5
51	Spivak K. (KristinaSpivak)	3					3	4
52	Maksimov (DaniilBond)	1					3	4
53	Mal'tsev V.A. (Viktorus2018)	2					2	4
54	Bayguchukova A.M. (ABayguchukova)	2					2	4
55	Plaksin D.A. (UMenyaLapki)	3					3	3
56	Pitel' N.L. (NikiMx)	1					3	3
57	Stepanyan A.A. (Curriculum)	1					3	3
58	Stashevskij E.A. (Sweet Yogurt)	2					2	3
59	Ivanov D.I. (dimonivanov)	1					2	3
60	Merzlyakova A.S. (alen4ik.a)	1					2	3
61	Ivanov I.I. (Danchesy)	1					2	3
62	P'yankov E.I. (kaijusan)	2					2	2
63	Karimova A.T. (Alirima2872)	2					2	2
64	Zheludkov S. (zhsvyach)	1					2	2
65	Shevko A. (neyana)	1					2	2
66	K (abay_k)	1					2	2
67	Nasyrova (Alewa86)	2					1	2
68	Der S.R. (allmart8558)	2					1	2
69	Gurin (Cohn)	2					1	2
70	Abramenkova (muroni)	1					1	2
71	Balakhnina A.N. (gomershand)	1					1	2
72	Morgenbliz A. (morgenbliz)	1					1	2
73	Gusenov S.Yu. (Said_05)	1					1	2
74	Filatova E.M. (Elizaveta Filatova)	1					1	2
75	Abdusamatov D.X. (Rydo)	1					1	2
76	Rudometov K.A. (givemegoyard)	1					1	2
77	Belyaev I.A. (Igorman231)	1					1	2
78	Marinich A.D. (nanushka48)	1					1	2
79	Koretskij M.S. (Mariiik)	1					1	2
80	Shalaev O. (Atrotos)	1					1	2
81	Gordeeva M. (manyagor)	1					1	2
82	Tarasevich O. (OlgaTAMA)	1					1	2
83	Polishchuk L. (Lyubovochka)	1					1	2
84	Mikhajlova (ravenraven)	2					1	1
85	A K.A. (Mr_Wolf)	1					1	1
86	Penyaz' A.S. (Nastikit)	1					1	1
87	Pupkin (ChK2026)	1					1	1
88	Andreevskaya O. (int1155)	1					1	1
89	Karimova A.T. (Alisa2462)	1					ban	ban
90	Koreshkov S.I. (skoreshkov88)	1					1	1
91	Mashura (panda2121)	1					1	1
92	Dik (Dik777)	1					1	1
93	Solov'yov I.V. (ilya_solo)	4
94	Berkovich A. (ArturBerk)	3
95	Dem'yanenko P.V. (Drugan174)	3
96	Alekseeva T.N. (tatidataanalystbaddie)	3
97	Borisenkov D.V. (xuser)	2
98	Krasovskij E.A. (pegoopik)	2
99	Koptel'tsev V. (selber)	2
100	Smith (bigdave77)	2
101	Demidenko A.A. (BorisEltsin)	2
102	G A. (anna_tutta)	2
103	Grevtsov (imicom)	2
104	Ro (06n49ygwh45)	2
105	Klimenko S.R. (sofiya klimenko)	2
106	Ivanov I.I. (pasta123!@#)	2
107	Apashkina M.A. (Marina Apashkina)	2
108	Berseneva T.M. (Bersa_3785)	2
109	Levin Yu.A. (pdestroyer)	2
110	Voropaev A.A. (Dizelniy)	2
111	Dugin D.R. (DYGIDAI)	2
112	Ivanov V.P. (ivanov_v.p.)	2
113	Voitovych A. (Anatolii13)	2
114	sofiane (sofiane11111)	2
115	Kovaleva D. (Kovaleva Dar'ya)	2
116	Semenova E.V. (bifa)	2
117	Ozerkina I.A. (oz_iren)	2
118	Vinogradov M.A. (QuWo0)	2
119	Shibaev (saah)	1
120	Williams B. (BW)	1
121	Kobelyatskyy M. (kiiki)	1
122	Leont'ev E. (Dzhon2007)	1
123	Gitinomagomedov (gmansur88)	1
124	Mel'nikov A. (Al Mel)	1
125	Kozhevnikov A.M. (kojew)	1
126	Popov (Tony Vinsenty)	1
127	Pototskaya (kusochek-91)	1
128	Abdulmanapov A. (Dvarik)	1
129	Kazakova A.A. (KazakovaAA)	1
130	Ryazaeva (LoadedDice)	1
131	Tutarkov A. (barmaley19)	1
132	Kochetkov D. (DeBe)	1
133	Tsybin A.V. (magicdragon)	1
134	Drozhzha D. (D-D-Drozhzha)	1
135	Petrov D. (Murcinhum)	1					ban	ban
136	Pronina (Ektmi)	1
137	Beketov (becat)	1
138	Bogach J.S. (XrazZik)	1
139	Sarkis'yan G. (gennadi_s)	1
140	Vasyukhina (cldwll)	1
141	Gonvharov T. (timurgoncharov)	1
142	Rodin (uoloki)	1
143	Jiqia G. (Ajika)	1					ban	ban
144	R. (Wra1th)	1
145	Kalashnikova A.K. (anzhelikakalashnikova)	1
146	Komov S.M. (Komov S. M.)	1
147	Babaeva I.V. (Izzybelka)	1
148	Skibin V.V. (SQL_vvs)	1
149	Lysykh V.K. (Usilitel')	1
150	Akameeva S.V. (SVA1)	1
151	Borodina (Perunica33)	1
152	Torgashin M.C. (tormich9991)	1
153	Mikusov (ilyamksv)	1
154	Demyanuk (Nadya 69)	1
155	Purbuev B.Z. (PurbuevBulat)	1
156	tykva P. (soda)	1
157	Kharisov A.Ya. (Azamat777)	1
158	Bogatyrev N.V. (BNV2873)	1					ban	ban
159	Stytsyuk N. (natalia19930420)	1
160	Nurbaev V.V. (Ulanovka)	1
161	Anisimov I.A. (kefir67)	1
162	Vasil'ev (GudiniMoonlight)	1
163	Bochkova (PunDora)	1
164	salmanov (onlu)	1
165	Romanchuk I.A. (ial.romanchuk)	1
166	Sadomtsev A. (Artemucho)	1
167	New R.G. (newLogin)	1
168	Bocharnikova A.A. (Aleena22)	1
169	Sidorova Yu. (yloko)	1					ban	ban
170	Esk'yuel' D. (wlkr4sh)	1
171	Romanov D.S. (aza9aza)	1
172	Borisov V.S. (narcopolo)	1
173	Sattarova S. (samina010921)	1
174	Volyntseva K.O. (KarinaVolyntseva)	1
175	Romanchenko (Polros)	1
176	Bokuchava A.G. (Teddy_23)	1
177	Postonogova P.A. (polyakolyaska)	1
178	Kuznitsin L.M. (Kuznitsin_Lev)	1
179	Oliver (klavamish)	1
180	Krutoi (KentKrutoiBro)	1
181	Belyaeva E.V. (evb2555)	1					ban	ban
182	Semich E.O. (Grenka-Genka)	1
183	Goryaeva P.Yu. (sinilidoch)	1
184	Faskhutdinov A.A. (sfiler)	1
185	Semibratov (Dmitry113rus*)	1
186	Krinka A.A. (alnurio)	1
187	Palagutin D. (danilllkkaaaa)	1
188	Galkina D.D. (galkinaddd)	1
189	Indusov K.V. (IndexIndus)	1
190	Morozova O.E. (miss olya)	1
191	Bulatov (gonzojumper)	1
192	Aleksejchuk G.Yu. (Galina89)	1
193	Ababa U.E. (@Mori@)	1
194	Izranov K.S. (heavydyingsoul)	1
195	Suntsov K.O. (KirillSuntsov11)	1
196	Li A.I. (naastlii)	1
197	Ajnabekova T.E. (tomiris05)	1
198	Unregistered	21

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References