Today's statistics at "SQL Exercises"

September 19, 17:06 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	Shibaev (saah)	2	1	53	1	5
2	Trushin D.D. (w8urd)	4			3	3	13	22
3	Sevast'yanovich O.V. (OlyaS)	1	1	2		1	10	13
4	Levin Yu.A. (pdestroyer)	3			1	1	1	2
5	Dmitrij (Dmitrij Pr.)	1					ban	ban
6	Shagaeva A.B. (AzizaPishow)	1					ban	ban
7	Gataullin A.Sh. (Ballist)	1					ban	ban
8	Nurbaev V.V. (Ulanovka)	1					15	25
9	Zhorov (zefir123)	1					15	25
10	Botalova (sipka15)	1					15	25
11	Pogosyants (Ivan338)	1					ban	ban
12	Gimazetdinov F.R. (Fargat)	1					ban	ban
13	Lunegova A.A. (Angelochek_l)	1					15	24
14	Lajlo M.V. (Lo.mila)	1					15	24
15	D'yachkova V.M. (vikauwz)	1					14	24
16	Buraya K. (kseni_bur)	2					ban	ban
17	Kasatkina S.O. (Kasatka_411)	2					15	22
18	Karimova A.T. (Alisa2462)	1					ban	ban
19	Tret'yakov (KkkripperShsHsh)	2					15	18
20	Ostrovskaya M.S. (marusya67)	2					15	18
21	Fateeev R.A. (Roma78684)	1					15	18
22	Bukina (ViToshaB)	1					15	18
23	pank D.D. (pankyyy)	1					11	17
24	Ivanov I.I. (GRACH277)	2					13	16
25	parvorop A.O. (jdshfjksjsd)	3					12	15
26	Chaikov D.V. (qwerty12321)	1					12	15
27	Surikova M. (melaniyasurikova)	1					11	14
28	Ivanov (prizrakprida)	3					10	13
29	Lebedev V.U. (DenisYhovich)	2					10	13
30	Fhfhd A.P. (Suzuki123)	2					ban	ban
31	Khajlobekov K.M. (qkh)	2					10	13
32	Ivanov A. (TheHennessy)	2					10	13
33	Khan R.E. (SQL_Manace)	1					10	13
34	Ponden (PondenQ)	1					10	13
35	Penskij S.V. (Sergey1006)	1					10	13
36	Bondarchuk G.V. (Gosha11112233)	3					9	12
37	Baris A.A. (thx3)	2					8	11
38	Iodik D.V. (Risf)	1					8	11
39	Koretskij M.S. (Mariiik)	1					8	10
40	Kim D.D. (Mouraie)	3					8	9
41	Zubov A. (antxsha)	1					8	9
42	Kozlova M.S. (Kozlova_Maria)	2					7	9
43	Shabarshov M.S. (kreis)	2					7	9
44	Bogachev (raxil)	2					7	9
45	San'ko S.S. (Ssof'ya)	1					7	9
46	Khar'govskaya A. (Arlet)	2					6	9
47	Noskova D.I. (daho_n)	1					5	9
48	Rudakova S.E. (Sonya Rudakova)	1					5	9
49	knigin K.N. (12312313)	1					7	8
50	Safin R.R. (TheGodLike)	1					5	8
51	Korotkikh V.D. (wwbaby)	1					5	8
52	Ryabkov (Uchenik35)	3					7	7
53	Dolbik S.Yu. (kanfetusil)	1					6	7
54	Berezhnyi V. (viktorx1996)	1					6	7
55	Konstantin (Neruxov)	1					6	7
56	Shmigiryova (irrikks)	1					6	7
57	Samorodov V.O. (svo20m115)	1					6	7
58	Mishenev M.M. (Mishenev Mikhail)	1					6	7
59	Shibanov P.G. (PlayFish)	2					3	6
60	Kukin D.S. (lokomaikai)	2					5	5
61	Ivanov (alex2026)	2					5	5
62	Nurymbay M.S. (Merik05)	1					5	5
63	Shapiro D. (xx_Da_Sha_xx)	2					3	5
64	Skamov E.K. (Scumjazz)	2					3	5
65	Sheremet'ev I.M. (Efcko31)	1					3	5
66	Fedosova T. (fed0s06)	1					3	5
67	A M.A. (Mmmmmmmmmm)	4					4	4
68	Nasyrova (Alewa86)	4					3	4
69	Shagalov O.L. (TTC)	2					3	4
70	Morgenbliz A. (morgenbliz)	2					2	4
71	son D.S. (v golove - NULL)	1					2	4
72	linhcoder L.H. (linhcoder)	1					2	4
73	Sul A.Z. (IsaacS)	1					2	4
74	Ashkhatsava (UB666)	1					2	4
75	Sychyov Yu.S. (Mrak.krd)	1					3	3
76	Popkova N.A. (adoctor)	1					3	3
77	Karapetyan (Cianatalaqui)	2					2	3
78	Der S.R. (allmart8558)	1					2	3
79	Murin I. (Ilya__M)	1					2	2
80	Alexeeva C.A. (alecamic)	1					2	2
81	Ivanov K. (adose)	1					2	2
82	Murav'ev E. (Egor1o)	2					1	2
83	Voronina (dash_vrnn)	2					1	2
84	Noskov P.I. (P_noskov)	1					1	2
85	Bulychev F.A. (Fedya2011)	1					1	2
86	Zhaxygeldin (Yeldos1)	1					1	2
87	Fajzulina S.Sh. (snejanna)	1					1	2
88	Davydova M. (Mariya1723)	1					1	2
89	Igor F. (Vudmam)	2					1	1
90	Chernushevich A. (AnyaChernushevich)	2					1	1
91	qweqwe Q.Q. (qwewqe11)	2					1	1
92	Rebovskij (x-lerasim13)	1					1	1
93	Bajbikova D.R. (Daniche)	1					1	1
94	Kalmykova T.S. (Red ololo)	1					1	1
95	s S.S. (Srpowksi)	1					1	1
96	Nikolaev (FELLOW_1234567890)	1					1	1
97	Krasovskij E.A. (pegoopik)	5
98	Sarkis'yan G. (gennadi_s)	4
99	Gusev (Fakel99)	3
100	Artemev L. (Leonid S.)	3
101	Kurochkin P.A. (qwrqwr)	2
102	Pukhova V.A. (sinichka111)	2					ban	ban
103	Bikmaev E.M. (Ar_sql_Nle)	2
104	R. (Wra1th)	2
105	Glushko S.Yu. (vechnojunior)	2
106	Mikaya (Gio9248)	2
107	Bochkova (PunDora)	2
108	B D. (bzldm)	2
109	Barashkin A.A. (conquru)	2
110	Sayfiddinov F. (Sayfiddinov Firdavs)	2
111	Krasko (KKA45)	2
112	Kazakov I.G. (Igor'SQLider)	2
113	Barsegyan G.S. (BarsGrig96)	2
114	Anoschenkova A. (yabarsik)	2
115	vrtpoint (oddstn)	1
116	krivyakov A.O. (re2wre2w)	1
117	Ushakov A.Y. (ushakov94)	1					ban	ban
118	Filatov D.D. (Anticoder)	1
119	fuckoff (jdm1337)	1
120	Kosov A.A. (Kintoky-san)	1
121	Oduvan I.S. (Lakomka)	1
122	Kushnir S.A. (Wishmaster190281)	1					ban	ban
123	Musin A.R. (Azat3007)	1
124	Ivanov V. (ErikCia)	1
125	Koptilin I.S. (Il'ya1111)	1
126	Sakharuk M. (MarySakharuk)	1
127	Nikolaev A.N. (n1kolaevs)	1
128	Kharchevnikov D.D. (ScarmX)	1
129	Ish (dm1sh)	1
130	Komov S.M. (Komov S. M.)	1
131	Agafonov N.E. (povelitelstrekoz)	1
132	Lysykh V.K. (Usilitel')	1
133	Krasnov A.A. (Nutr1k)	1
134	Dvornikov (nikit00s061295)	1
135	Nurmukhamedov I.D. (ilyanurm_0467)	1
136	Klimenko S.R. (sofiya klimenko)	1
137	Ivanov I.I. (pasta123!@#)	1
138	F M. (mic1c)	1
139	Arkush N.V. (atikin23)	1
140	Titov (Mnogoznaal)	1
141	Mikhajlova V.P. (veneragret)	1
142	Zhur V. (mrvaroz)	1
143	Pupkin (ChK2026)	1
144	Usanova D.A. (Usanova Dar'ya)	1
145	Muradyan P.S. (Answel)	1
146	Kotel'nikov A. (AlekseyKot)	1					ban	ban
147	Luk'yanov R. (RomLV)	1
148	Kuznetsov (ZXCdemon1)	1
149	Borisevich T.V. (youngCocain)	1
150	Akhmedov R.V. (Rzaeieije)	1
151	ns0 N.N. (ns0000)	1
152	Amerkhanov L. (1inar)	1
153	Belov A. (a.belov.nsk)	1
154	Pan V.O. (jimmychunga)	1
155	pys (folki1n0)	1					ban	ban
156	Alafaev M.K. (Zero_7692)	1
157	Saxena P. (GreekGod)	1
158	Egorov V.V. (relizene)	1
159	K V.S. (pylamer_2)	1
160	Vikent'ev F.A. (hraven)	1
161	Tyurina V.A. (veraturina)	1
162	Stepanyan A.A. (Curriculum)	1
163	Unregistered	21

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References