Today's statistics at "SQL Exercises"

August 01, 22:33 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	Schetkin N.A. (Persey_Tunguskovich)	2	3	3		4
2	Lyaschenko S.N. (pimen78)	1	1	101		4
3	Vinogradova S.M. (Tigra1)	2	2	129		3
4	O (janeoosql)	2	2	26		3
5	Bodrov S.S. (Sergejlock)	1			1	1
6	Antonov (SalamPopolam)	2					14	23
7	Deva N.S. (nithin0303)	2					15	22
8	Baldinini (Divine_Divinity)	1					15	21
9	Volkova E. (elnV11)	1					15	20
10	Feofanov A.S. (feofan01)	1					15	19
11	Rodionov M. (acrighthere)	1					15	18
12	Smirnov (Mickey_Slim)	2					13	16
13	Savenko (olalasavenko)	3					8	13
14	Glebov A.P. (mitridat_evpator_everget)	1					8	13
15	jebugaco H.N. (jebugaco_me)	2					9	12
16	Komissarov E. (Lalafa1)	1					9	12
17	Sal'khova A.A. (Nastya1823)	3					10	11
18	Khorunzhij E.A. (wuwuqw)	1					6	9
19	Kerimov K. (Kerim Kerimov)	3					5	8
20	Gvindzhiliya E.A. (guccigova)	1					5	8
21	Kunov (lachezarkunov)	2					5	7
22	Nikulenko P.A. (Flower1001)	4					6	6
23	kofuku (Kofuku)	1					6	6
24	Sivkova (uhihio1)	1					5	6
25	Altashin S.V. (burrito)	1					2	6
26	Dyatlov M.S. (Gitarist)	2					5	5
27	Xigitan X.X. (Userxigitan)	2					5	5
28	Umarova (ChelseaBlue)	1					5	5
29	Kim V.V. (Victory13KiVi)	1					5	5
30	Vdovin T.E. (Timafej)	1					5	5
31	yzymaki N.M. (narutoCool)	1					5	5
32	Khokhlov (TermiDD81)	2					3	5
33	Khambikov (Aleksandr Gurman)	1					3	5
34	Fedorchukova D.V. (DariyaFedorchukova)	1					4	4
35	Strilenko (Liamorte)	2					3	4
36	Maryakhin N.R. (pivandriy)	1					3	4
37	Ischenko K.Yu. (Kpuh)	3					2	4
38	G A. (anna_tutta)	2					2	4
39	Kartavtseva A.S. (Sasha Kartavtseva 94)	1					2	4
40	Mitrofanov V.P. (WhyNot111)	1					2	4
41	Star D. (BobaBiba123)	1					2	4
42	Bobrovskij V.A. (lantique)	1					3	3
43	Timur Ch.V. (timskywalker)	1					2	3
44	Mikaya (Gio9248)	1					2	3
45	ess (ernyg)	1					ban	ban
46	Pavlova A. (Tasik1)	1					2	2
47	Korolev R.V. (zouker)	2					1	2
48	Zubkov D. (Dm54)	2					1	2
49	Zhelnovach A.V. (Amatiri)	2					1	2
50	Petrov (Steamboat)	1					1	2
51	Britov A.R. (BritovAR)	1					1	2
52	Strukov (StrukovSA)	1					1	2
53	Argunov (russs111)	1					1	2
54	Kuznetsov (GloomyFox123)	1					1	2
55	Ivanova (nahi1)	1					1	2
56	Urakina K. (Ksu774)	1					1	2
57	Kazantsev V.D. (kentiko_0)	1					1	2
58	Golyandina (nap@)	1					1	2
59	Ivanov (eu.priok)	1					1	2
60	Sukhanova O. (Laleika)	1					1	2
61	longday I. (longday)	1					1	2
62	Nud'ga P.I. (polinudg)	2					ban	ban
63	letearlybeen (letearlybeen1)	2					1	1
64	Kozlova A.I. (AlenaKot)	2					1	1
65	Ponomarev M.P. (MatveyF)	1					1	1
66	Vlasov M.V. (Vlaskis)	1					1	1
67	Sadovaya K.A. (k1x07)	4
68	Sarkis'yan G. (gennadi_s)	4
69	Kurochkin P.A. (qwrqwr)	3
70	Krasovskij E.A. (pegoopik)	3
71	Koptel'tsev V. (selber)	3
72	Vyazovetskov A.S. (alex_v)	2
73	Setrin A.A. (Perez)	2
74	Vodolazova A.V. (Vodolla)	2
75	Koshman A.S. (Fennix)	2
76	Sabirov R.R. (Impress03)	2					ban	ban
77	Makovskaya E. (makowka)	2
78	Zyuzyupupuk P.K. (@mutagen00)	2
79	rtrtrtrtrtrtrtrtr (plompital)	2
80	Ivanova (MRX$)	1
81	Ganichev A. (DanceOrDie)	1
82	Landa M. (supertim)	1
83	Gor'kov R. (grm_80)	1					ban	ban
84	Babayants (Karin)	1					ban	ban
85	Smolin A. (alexj_sm)	1					ban	ban
86	kupriyanov Ya.N. (yahmen)	1
87	Andzhukaev E.S. (suzume)	1
88	Guseinov A. (Ali_G)	1
89	Black D. (RushBush)	1
90	vy ser'ezno? O.V. (putlib1)	1
91	Sergey (Floony.by)	1
92	Koloskov (Art_Dart)	1					ban	ban
93	Pipch (Pipch)	1
94	Petrov (Goododo)	1
95	Mikula D.Yu. (Danil1703002000)	1
96	Kuznetsov (Bulbozavr)	1
97	Jukna N. (NerijusJ)	1
98	AlshainC A.A. (AlshainC)	1
99	Sergey (SergeyKulagin)	1
100	Tsybin A.V. (magicdragon)	1
101	Titov (mahaon_1999)	1
102	Rodin (uoloki)	1
103	Dudareva D.V. (Dinogo)	1
104	Yunusov (imizakas)	1
105	Litvakov D.D. (solarand)	1					ban	ban
106	Malinchik K.D. (Skaipia)	1
107	fallah (Goj1ra)	1
108	Golovkin I.A. (GHOST2508)	1
109	14 8.8. (xyecoc1488)	1
110	R. (Wra1th)	1
111	Lysykh V.K. (Usilitel')	1
112	Fokeeva M.V. (M-6)	1
113	Kulebyakin S.D. (vargusson)	1
114	Rebovskij (x-lerasim13)	1
115	Samokhina A.A. (Ania Nel)	1
116	Avdyunina V.D. (Ruibing)	1
117	Samsonov A.Yu. (Bot_to_be)	1
118	Korolev A.A. (Ereticheskij Chajnik)	1
119	Bromberg A. (ariel_bro)	1
120	yehor Y. (beginner0)	1
121	Goncharova K.A. (22437867865767221222)	1
122	Zaluzhskij V.S. (vszsky)	1
123	Nevskij D. (SkipOne)	1
124	Strogonov M. (maxstrog)	1
125	Filippov D.A. (shketik)	1
126	Matveev (rvm17)	1
127	Anisimova (marble_plaque)	1
128	harder W. (Karl Show)	1
129	Petrosyan A. (Alisiya777)	1
130	Kirnik (Kirnik)	1
131	Dubenko (32423432)	1
132	Andryushenkova E.P. (lixxa)	1
133	Kopejkin K.K. (kopeykinkk)	1
134	Sufiyanova E.E. (emso)	1
135	Pyatakova V.V. (Snnake)	1
136	Belyaev (Yury2000)	1
137	Dokalina Ya.S. (Yana Dokalina)	1
138	Unregistered	22

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References