Today's statistics at "SQL Exercises"

July 02, 14:21 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	piopio5 (piopio5)	1			8	8	15	18
2	Plamod'yanov S.G. (plmdnv1)	1	2	6		3	ban	ban
3	no N.N. (FE4uzchik)	1			3	3
4	Safronov P.A. (Paulus73)	2	1	129		2
5	Palela D. (Davitapalela)	2	1	4		2
6	koagj M.A. (maex)	1	1	3		2
7	Nikol'skij I.Yu. (igoryun)	2			2	2
8	Shubitidze N. (nikoloza)	2			2	2
9	serva4ok (serva4ok)	1					ban	ban
10	Kolevatov A. (stopPOWERBI)	1					ban	ban
11	NoName (Citramonus)	2					15	24
12	Podgornaya D.R. (Himikoo)	1					15	24
13	Orlov (DimaDor1)	2					15	18
14	Aleshina N.I. (nataliealeshina)	2					11	18
15	Kakh V. (ViktoriyaK)	1					14	17
16	Smolenskaya A. (Ridicule)	1					6	11
17	Familiya (LetsSQL)	1					8	9
18	ku E.A. (meowmeow159)	2					7	9
19	Ivanov M.V. (KaIugaS)	1					6	9
20	Moldakynov A.A. (Nomad444)	1					6	8
21	Osipov M.N. (Maksim22)	1					4	8
22	Abramov V. (avv37)	2					6	7
23	Gol'dman E. (Bessmysliye)	1					4	7
24	Pahadayeu A. (AndOffline)	1					4	7
25	Tuigynbekov Z.D. (Lodka111)	1					6	6
26	Sharts M. (Maria1202$)	2					5	6
27	Batyukov (beermood)	1					4	6
28	Berdnikov P. (stllife1)	1					4	6
29	Kulikov K.A. (K1lpita)	2					3	6
30	Okolnikova (SofyaO)	1					3	6
31	gtnhjd B... (Ghbd)	2					5	5
32	Luzina A. (Luzina_aa)	1					5	5
33	Vedeneev V.S. (Feral4ik)	1					5	5
34	Perevozkin (emaevsemae)	1					5	5
35	Mikhajlova N. (Natalya_M13)	1					5	5
36	Jhonson (Akela777)	1					5	5
37	Khristyuk A.A. (NassKh)	2					3	5
38	Vasya P.R. (Dagotra)	1					3	5
39	Sverdlov (Saxo_Grammaticus)	1					3	5
40	Istomin A.E. (iShurik)	1					3	5
41	Loginov A.S. (arien4)	1					3	5
42	Aleschenko L.A. (hhheko)	1					3	5
43	Shevchenko E. (agedPhoenix)	1					4	4
44	Chugai (Georgy_Chugai)	1					3	4
45	Ivanov V.V. (Kcs)	2					2	4
46	Zvereva M.M. (maria.zvr)	1					2	4
47	Kuz'mina Ya.V. (Yana_Zvezdochka)	1					2	4
48	Semenov (asv_1)	1					2	4
49	Denisenko E.S. (Denchiklenchik)	2					3	3
50	Khmelevskaya S. (Klepa151719)	2					3	3
51	Yakovlev A.S. (Artemilian1)	1					3	3
52	Abuzova K. (kauoa)	1					3	3
53	Andreev (xxxerro)	1					3	3
54	Tskhao N.M. (caonimenma1)	1					2	3
55	Askalenkova M. (miracleapsara)	1					2	3
56	ridome (ridome5279@lovadio.com)	1					2	3
57	Mark D.D. (Backstrickboy)	2					2	2
58	Podlesnyh I. (ivan_podlesnyh)	2					2	2
59	Bogatyrev N.V. (BNV2873)	2					ban	ban
60	M (MrQzZza)	1					1	2
61	Kharlamov (Arcanum)	1					1	2
62	Evgen'ev (gek_c)	1					1	2
63	Iva E.A. (PlatinumKub10)	1					1	2
64	Shashok (hallucination)	1					1	2
65	Zharchenko Z.S. (wwz_zww)	1					1	2
66	Orlov (404_500)	1					1	2
67	Nakonechnaya V.S. (Zarela)	2					1	1
68	Levchenko G.G. (rub1noff)	2					1	1
69	K S. (skryzh)	1					1	1
70	Berezovskaya D.V. (dashaeverafter)	1					1	1
71	Zhiryakov V.V. (vladvladzero)	1					1	1
72	Obukhov A.V. (Alex_71)	1					1	1
73	Allaberenov (Asinus_Buridani_inter_duo)	1					1	1
74	Mukhamed'yarov A.R. (alex_mu002)	1					1	1
75	alex (alex2228)	1					1	1
76	Popov P.O. (Paul0787)	1					1	1
77	Vegas (4ukaGo)	1					1	1
78	Tarashev K.A. (KirillT)	4					ban	ban
79	Kuz'mina E.V. (Fiction)	2
80	Gitinomagomedov (gmansur88)	2
81	Ivanov A.E. (AlexIvanov1981)	2
82	Skokov B.S. (leks$$)	2
83	user I. (igoryanpriet)	2
84	Nikitin S.R. (anothersnn)	2
85	Fukalova (mycqlef1)	2					ban	ban
86	Yastrebov D.D. (Yakimori)	2					ban	ban
87	Petrov A.I. (Tobo-bobo)	2
88	Anonov (m0n0warg)	2
89	lolkeker I.G. (smetenayoy)	2
90	Bromberg A. (ariel_bro)	2
91	doronina (marfa_vasilevna)	2
92	Shibaev (saah)	1
93	Williams B. (BW)	1
94	Kurochkin P.A. (qwrqwr)	1
95	Savina (Lucky777)	1
96	Altashin S.V. (burrito)	1
97	Bichurova P.G. (PolinaPleasures)	1
98	Evlanova (Kate_E)	1
99	Koptel'tsev V. (selber)	1
100	Fedotov A.A. (alexxfed20)	1
101	Turbin F.A. (_fedor_)	1
102	Agova (KsutaNJ)	1
103	Abdulmanapov A. (Dvarik)	1
104	Loseev N.I. (therion666)	1					ban	ban
105	Zavgorodnij S. (M0destas_1)	1
106	Voronov D. (Elnov.70)	1
107	Smith (tibacityblues)	1
108	Metlyaeva E. (Sany90)	1
109	Sinkova D.A. (Dasha_Si)	1
110	Ivanov I.I. (vlad91)	1
111	N T. (TarasN)	1
112	Rossi (Twiggy18)	1
113	Petrenko (Naprimerishe)	1
114	Averin V.E. (LokhmatyjVarenik)	1
115	Frolov (aandfrol)	1
116	Evmenov A. (stakka)	1					ban	ban
117	Khaertdinov K. (kememex)	1
118	Filippov T.S. (Barbarbossa)	1
119	Liza (elkaaa)	1
120	babakhanov T.T. (takhir9595)	1
121	Klimko A.Yu. (okm1lk)	1
122	Panicheva V.D. (_Vika_)	1
123	Chernyshov D. (dfblack)	1
124	Zhemchuzhnikov A.D. (Undefined_sql)	1
125	Anisimov (mightiness)	1
126	Dogadov S.V. (Serzho)	1
127	Aro E.F. (Ekaterina Araud)	1					ban	ban
128	fioletovaya (fioletovaya2)	1
129	Talala A.V. (TAB_CL)	1
130	Sarkis'yan G. (gennadi_s)	1
131	Kushnir S.A. (Wishmaster190281)	1					ban	ban
132	Kopitajko D.M. (DanilaKopitayko)	1
133	Gorobinskij (demonguest)	1
134	Chentsov A. (AlexBell1)	1
135	P I.*. (IrinaPetr)	1
136	Andrusenko A.P. (billyzmoon)	1
137	R. (Wra1th)	1
138	Kotova (elilia)	1
139	Kalymbetov E.K. (niceandcrispy)	1
140	Artsyshevskaya I. (esc_del)	1
141	Vladimir (myvlink)	1
142	S O. (s1ns3d)	1
143	Skibin V.V. (SQL_vvs)	1
144	Lysykh V.K. (Usilitel')	1
145	Sairanbek D. . (sairanbek_darkhan)	1
146	Goloschapov R.A. (Goldensinner)	1
147	Velikorodnyaya A.V. (Aleksandra WWW)	1
148	Khusnutdinov D.D. (Abdulxamid)	1
149	Ashuba B.D. (badis)	1
150	Bulantsev I.D. (6u9)	1
151	alekseitroitskii (alekseitroitskii)	1
152	Rezvan (SilentLand33)	1
153	Serdyuchenko E.Yu. (eserdyuchenko)	1					ban	ban
154	Il'in I.N. (Igor_Il)	1
155	Skudnev B.K. (bogdsk)	1
156	Sobolev N.A. (NickolaySobolev)	1
157	Stonis S.O. (Sergjik23t)	1
158	Gudelnikov S.A. (SG1328)	1
159	Osipova E.I. (ppurapple)	1
160	test (qwerty37892)	1
161	Pyak Ya. (UchAch)	1
162	Mal'kov G.V. (Grigor1i)	1
163	Saperov S.V. (s4per)	1
164	Abdulov F.N. (FuadSQL)	1
165	Filatov A.E. (Seifilatov)	1
166	Fedorov S.N. (__Serg__F)	1
167	KpocaB4er (kpocaB4er)	1
168	Efremov I.A. (Targeted predator)	1
169	Antonov M.V. (mantan15637)	1
170	Troyanov A.S. (Anatolij Troyanov)	1
171	Abdrakhmanov R.R. (AbdRail)	1
172	Daukenova K. (Kseniya Andreena)	1
173	Katsel'nik D. (katsela)	1
174	Mirzo B. (boringlife)	1
175	Belo A.V. (Anastra)	1
176	kochagov O. (Gorilla_bot)	1
177	Grigor'ev V.M. (zykpo)	1
178	Khvo E.A. (edhvostikov)	1
179	Akhmedova Kh.M. (akhmedova_ida)	1
180	Kulzhekenov (Rustam_Kul)	1
181	Unregistered	25

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References