Today's statistics at "SQL Exercises"

May 11, 15:25 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	Nesov (80STH)	2	5	46		9
2	Kolesnikov S.O. (bulbasaurus)	2	1	58	3	6
3	Karamyshev I.O. (Arqw)	1	2	-1		3	ban	ban
4	Golovenko M. (gomotya)	1					15	27
5	Lutskina E.V. (Lina-eva)	1					15	26
6	Frolov A. (afrolov05)	1					15	26
7	Veritonov A.P. (Zeero.)	2					11	20
8	Matyuhanov D.A. (Lineagi4)	1					14	19
9	Pykhtina A.M. (Alina Pykhtina)	2					15	18
10	Khlynin P.S. (Pavel124)	2					15	18
11	Chekir Yu.S. (GoldJuly)	1					15	18
12	Chevychelova D.E. (hvhvlvd)	1					15	18
13	Kuz'mina A.I. (Aliska pro)	1					15	18
14	Vlasov N.V. (shmegyla)	1					15	18
15	Nepochatykh D.A. (ninja1)	1					15	18
16	GG (Bazist)	1					14	18
17	Vereschagin V.E. (Izrail)	1					12	17
18	Tian (sqlMachineTuw99)	2					13	16
19	Makarov A.I. (arteleon)	1					10	16
20	Mologurova A.V. (ainareve)	1					11	15
21	Stepan2 S.S. (Stepan567821123)	1					10	13
22	Frolov A.P. (AlexyFrolov)	1					10	13
23	pexepan638 (pexepan638)	1					9	12
24	Shumskaya A. (shalenka)	1					8	12
25	Khloptsev A.V. (ANkaRTik)	1					6	10
26	Zavidov A.E. (Mamba555)	1					5	10
27	Azizov J. (Java1)	2					6	9
28	P A.A. (YourPast)	1					5	9
29	Il'ya (IlyaDZ)	1					7	8
30	Vlad V.V. (Bleckeid)	2					5	8
31	son D.S. (v golove - NULL)	1					5	8
32	Kandarshan A. (yabl_yad)	1					5	8
33	Peresetskaya S.A. (sssofi)	1					5	8
34	jwenkwgnwe J.J. (somewell)	2					4	8
35	Gorskin K.M. (Skroll)	2					6	7
36	Zolina (nyvmicha)	1					5	7
37	Schegol' Yu. (JulyaSchegol)	1					3	6
38	Usin M.-. (masino)	2					5	5
39	Murzabekov M.Kh. (Magich)	2					ban	ban
40	Hutchinson L. (Luther_Hutchinson)	1					4	5
41	Zap M. (MarinaZap)	1					4	5
42	Degovtsov K.A. (brazilian.pdf)	1					3	5
43	Kolesnik A.G. (KolesnikAlexandr)	1					4	4
44	Marchello K.G. (audi100c3)	2					ban	ban
45	Dey Y.V. (yaroslav53)	2					2	4
46	Pashaev R.A. (Pashaev)	1					2	4
47	Mironova E.I. (tRaWa)	1					2	4
48	darak A. (OrganicJuice8)	1					2	4
49	Voronova T. (Selena87)	1					2	4
50	sky D.L. (sky9)	1					2	4
51	Rezvan (SilentLand33)	2					3	3
52	VV (wir1)	1					2	3
53	solovev A.A. (otom4ik53)	1					2	3
54	ns N.N. (nosteam)	1					2	3
55	Fossa2016 F.F. (Ibo?)	1					2	2
56	Sokolova O.V. (Ol'ga2026)	3					1	2
57	Tyagin O.S. (Oleg18022)	2					1	2
58	K A.Yu. (Mad Harper)	1					1	2
59	Orlov A. (esterio)	1					1	2
60	Medovnik A.A. (AleksHoney)	1					1	2
61	Nguyen A. (Broseam)	1					1	2
62	Grechka I.V. (Pr0gGeR1337)	1					1	2
63	Kotyalrov M.V. (GUSb)	1					1	2
64	Slepchenko (supersonicsql)	1					1	2
65	Abubakarov A.Kh. (bxrzxly187)	1					1	2
66	Logvinov M.S. (Matvey1)	2					1	1
67	Anisimov N.A. (Nekit99)	1					1	1
68	Gus'kov V.M. (Vl4ditor)	1					1	1
69	Korolev R.V. (zouker)	1					1	1
70	Merk (JaffiSumans)	1					1	1
71	le S.E. (sedrus)	1					ban	ban
72	Sharbatov Y. (YusifSH)	1					1	1
73	Odegov A.I. (KovroLitik)	3
74	Krasovskij E.A. (pegoopik)	2
75	Sarkis'yan G. (gennadi_s)	2
76	Komov S.M. (Komov S. M.)	2
77	Tsaplina S.A. (rhonacam)	2
78	Postnikov (styofik)	2
79	Odnokurtsev (AlFochino)	2
80	matusevich V.K. (nika_mat)	2
81	Vyazovetskov A.S. (alex_v)	1
82	Kurochkin P.A. (qwrqwr)	1
83	Siplivaya S. (s-siplivaya)	1
84	Koptel'tsev V. (selber)	1
85	Neon M.N. (MEONMnX)	1
86	Ushakov S. (MoyPsevdonim)	1
87	Danyushin M. (GonLimon)	1
88	Baar I.O. (Link_091)	1
89	Pupkin A.A. (SnakeJkeeee)	1
90	Kiselev D.A. (jsabinaa)	1
91	SITNIKOV (flexcoder)	1
92	Korneev (NAK042)	1
93	Khaschanov N. (NKhashchanov)	1
94	Kosareva (Olga_Kosareva)	1
95	General'skij D. (Kev1n93)	1
96	Vdovin S. (Rujan)	1
97	Morunov E.D. (Morun)	1
98	Shagalov O.L. (TTC)	1
99	Borschovetskij I.N. (Igor2.0)	1
100	Shik I.Sh. (shikino)	1
101	ivanov (Aleksandr4994)	1					ban	ban
102	Tree (treesat)	1
103	bb (bathin)	1
104	Tarasova E.V. (Lenka penka)	1
105	Revenko M.A. (CptDisturbed)	1					ban	ban
106	Olejnik A.S. (Worker1999)	1
107	NIS I.S. (NISIlya)	1
108	Taushanov V.I. (vlad_tau)	1
109	Kalinin V.S. (Kalinin Vladimir)	1
110	Sigacheva D.D. (dosh1k)	1
111	tsoy (hznikdima123)	1
112	Klim (TanyaKlim)	1					ban	ban
113	Golovkin I.A. (GHOST2508)	1
114	Nikiforuk A. (nikiforushkina)	1
115	R. (Wra1th)	1
116	Stepanov (LexFrom)	1
117	Skibin V.V. (SQL_vvs)	1
118	Lysykh V.K. (Usilitel')	1
119	Khan (SergLock)	1
120	n (ivverlien)	1
121	Svintsova M. (Marina_icecream)	1
122	Kressa (DanilaMust)	1					ban	ban
123	Asryan (melinee)	1
124	Randin V.A. (Mieliki)	1
125	Silina P.V. (PoliSil)	1
126	Kucheeva D. (dkucheyeva)	1
127	Odintsov G.Y. (Jopix)	1
128	Stankov D.S. (Dima_St)	1
129	Andromedov (Andromeda12)	1
130	Zhgir (alizhgir)	1
131	Ivanov (Jack104)	1
132	Kuz'mina A.E. (nnkkzz)	1
133	Lipin V.S. (vacok5)	1
134	U A.V. (Monk35)	1
135	Utkin S.A. (Aethel)	1
136	K F. (123haipovayaplesen)	1					ban	ban
137	Sivakova (anna666)	1					ban	ban
138	Uvaev A.A. (Pompilio)	1
139	Filimonov -.-. (filde)	1
140	jjjj J.J. (mouse_werber)	1
141	K (Levanlomg)	1
142	alex110199 A. (alex11019999999)	1
143	Souza B. (b1nho)	1
144	Bochkova (AnyaBo)	1
145	Kadarmetov D.N. (horizon-spark)	1
146	Golubitskaya M. (mariya_golubitskaya)	1
147	Pak K.I. (kipak_spb)	1
148	Mikhailov A.V. (alemi)	1
149	Aitmagambetova D. (dilara5112)	1
150	Olejnikov A. (Andrej32)	1
151	Unregistered	21

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References