Today's statistics at "SQL Exercises"

October 02, 15:01 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	Sh S. (junopark1)	3	3	25		7
2	Shul'ga A. (Shul'ga A.S,)	5	2	-2		3
3	Filippkin D.V. (_dimon_)	1	1	53		3
4	Tsybin A.V. (magicdragon)	1			1	1
5	Bryndin P.V. (kolazolfen)	1					15	31
6	Fomin R.I. (Romashka2006)	2					15	24
7	Happy (DontWorryBeHappy)	1					15	24
8	no A.N. (AndreyXYZ)	1					10	20
9	Kolbaev (Veaablok)	2					15	18
10	Faradzhov (Aslan Farad)	2					10	16
11	Valiullina K.E. (Karina289)	1					9	16
12	Goryachev S. (SergGoryachev)	2					11	14
13	Sain T. (Temujin079)	3					10	14
14	Malyutina E.S. (MLTNKA)	3					10	13
15	Dem'yanova N. (naddem)	2					8	11
16	Vasil'ev V. (Valeriy123)	3					7	11
17	Karnaukhova A.R. (Linnchick99)	4					7	9
18	Zakharov V. (Aftornett)	2					6	9
19	Pulich (Tom_Deadline)	2					5	9
20	Parfenov I. (HotDoge)	2					5	8
21	Oliver (klavamish)	1					5	8
22	Seredin V.S. (JoDaH_JoEsTaR)	1					5	8
23	woodpecker (W00dy)	1					5	8
24	Ovechkina V.V. (kynika)	2					6	7
25	Lol D.F. (Tolyan67)	2					6	7
26	Matveeva V.S. (AKIVA95)	1					6	7
27	Drozhzha D. (D-D-Drozhzha)	1					5	7
28	Leonv V. (legenda1437)	1					4	7
29	Borisova V.G. (viola??)	1					4	7
30	Bob (foxtailer)	2					5	6
31	Faskhutdinov A.A. (sfiler)	3					4	6
32	Chinareva O.Yu. (PopyMur)	2					4	6
33	Fedosova T. (fed0s06)	1					4	6
34	Sivkov A.Q. (harekuin10fps)	2					5	5
35	Murzik K.K. (Myr3uk)	2					5	5
36	Egorova P.I. (Appolinarushka)	1					5	5
37	Vasilev A. (DeLuxeDi)	1					5	5
38	Kydyrov S. (SultanBeybars)	3					3	5
39	Nikolaev A.N. (AlexeyHeizenberg)	1					ban	ban
40	Zheludkov S. (zhsvyach)	1					3	5
41	Pereskokova K.A. (karushhh)	1					3	5
42	N A. (alemona)	1					4	4
43	Divakov (Kerovitagarr)	1					4	4
44	Razova D.V. (s7ipper)	1					4	4
45	Ryazanova D. (Lisyonok7)	1					3	4
46	K (sakudayo)	1					3	4
47	Evdokimov A.A. (Dark_Tanyan)	2					2	4
48	Borisenko P.A. (BoPolli)	1					2	4
49	Golovachyov K.E. (?l?????_???D????)	1					2	4
50	Glotov E.I. (Ellis_Rockwell)	1					2	4
51	Sin'kovets V. (wiksme)	1					2	4
52	Mironenko O. (Ol'ga Miro)	3					3	3
53	Alafaev M.K. (Zero_7692)	3					ban	ban
54	sov M.I. (mesov)	3					3	3
55	Nasikhov T.R. (neefe4ka)	2					3	3
56	Asylbekov D.A. (Dias003)	1					3	3
57	familievna (tatianka111)	1					2	3
58	Chertoryzhskij V. (vepb)	1					2	3
59	Khakhulina E.V. (Akulina)	2					2	2
60	Abdukholiqov H. (abdukholiqov)	2					2	2
61	angel V. (valolant)	1					2	2
62	Lunegov K.N. (Kir_is_blessed)	1					2	2
63	Filatov D.D. (Anticoder)	3					1	2
64	Potemkin (Yazon_79)	3					1	2
65	Berseneva T.M. (Bersa_3785)	2					1	2
66	Romanchuk I.A. (ial.romanchuk)	2					1	2
67	Anikanova A.A. (algaaa)	2					1	2
68	Malikov (Psevdonim312)	1					1	2
69	Maryutkin (VesnaOsen)	1					1	2
70	Murych (Soff2222)	1					1	2
71	Kovalevskij P.V. (soulshon)	1					1	2
72	salmanov (onlu)	1					ban	ban
73	7shkin S.V. (Slavnik)	1					1	2
74	Bocharnikova A.A. (Aleena22)	1					1	2
75	Iutinskij D.E. (dimaiuuu)	1					1	2
76	Cheban D.A. (kira_52947)	1					1	2
77	Nesterov (Cocsoman)	1					1	2
78	Yakovleva D.M. (DashaYakovleva)	1					1	2
79	Tikhomirova A. (alinkaaaaa1bbb)	2					1	1
80	Ruzakov (raacspu)	2					1	1
81	Gainutdinova (Nafisa4341)	2					1	1
82	brusliev A.K. (medved:L)	2					1	1
83	Aleksandrova (Hesai)	1					1	1
84	Finskaya E.O. (neandertaliza)	1					1	1
85	Gornostaev V.V. (VadimGorn)	1					1	1
86	q (zxchaosqqe)	1					1	1
87	Mikhajlova V.P. (veneragret)	1					1	1
88	Zhuravlev D.A. (HEPHSQL)	1					1	1
89	Egamov B.A. (Bulat Egamov)	1					1	1
90	Zhelobkovich P.S. (epoches=1000)	1					1	1
91	Al'siev I.A. (IDI)	1					1	1
92	Sutygina O.A. (S.O.A)	1					1	1
93	Nalivajko S.N. (a911867)	1					1	1
94	Totskij M. (mixanik)	1					1	1
95	Ivan (STier13)	1					1	1
96	virt (Virtwyn)	1					1	1
97	Ivanova O.N. (olga_ivanova)	4
98	Usachev A.A. (etot33)	4
99	P I.*. (IrinaPetr)	3
100	Kholkina (dimayulia2002)	3					ban	ban
101	Turchuk A.V. (Anastasiya_Turchuk)	3
102	Kubasov D.M. (DenisDM348)	3
103	Shibaev (saah)	2
104	Ponomaryov A.S. (sanik.2008)	2
105	Akimov (Qazed)	2
106	Yakovleva Yu.A. (yakolich1)	2
107	Amirkhanova A.A. (A-365)	2
108	Sarkis'yan G. (gennadi_s)	2
109	Gusev A.O. (NowOrNever)	2
110	Potikhenskij Ya.K. (Potixenskij Yan)	2
111	Dolganov (D.Y.D.)	2
112	Timchuk I. (Ilya Timchuk)	2
113	Orlova E.K. (Liza_a)	2
114	K A. (_aka_)	2
115	Krasnov I.A. (Ilichkrasn)	2
116	chchch Ya.S. (poglaschennayaya dusha)	2
117	ismagilova (zuhrafirst)	2
118	Koptel'tsev V. (selber)	1
119	voylaf (weulaf)	1
120	Askarbekov (stilhead_d)	1					ban	ban
121	Batrakov A.V. (Anton8709)	1
122	Danil'chenko (Dariawine)	1
123	Taburetova (otvar)	1
124	Prokhorov N.I. (NikVice)	1
125	Bagmet R.A. (Greykite)	1
126	Leschenko (Verochka_21)	1
127	Kisinsikj P. (PavelKisin)	1
128	Korshunov I.A. (Korshun99)	1
129	Konovalov P.D. (pdkonovalov)	1
130	Yakovlev D.D. (w3llw3t)	1
131	Blokhin K. (teanjay)	1
132	Delidovich A.I. (Artyom Delidovich)	1
133	Yeginbayev M.T. (Tyleks)	1
134	Terekhov I.E. (foxboy)	1
135	T (TA_IIII)	1					ban	ban
136	krekova (dianida)	1
137	Rodin (uoloki)	1
138	Malyuk V.V. (velsh)	1					ban	ban
139	Gubskij (Norco)	1
140	Petrov (Pluuusha)	1
141	supercute (dshumskikh)	1
142	Ivanov A. (SrSnzhk)	1
143	R. (Wra1th)	1
144	Saranchin M.S. (torvalds72)	1
145	Kaliberda D. (DanyK1988)	1
146	Zakharov (name24647)	1
147	Glushko S.Yu. (vechnojunior)	1
148	Safronov P.A. (Paulus73)	1
149	Bhusal S. (samirb)	1
150	Shishkin (That_Pear)	1
151	Tugdumov B.B. (Badara_01341)	1					ban	ban
152	Molonov A.V. (DYUSHA777)	1
153	Kyrgys A.S. (jpgang88)	1					ban	ban
154	Ibo K. (Kemchik)	1
155	Korolev A.A. (Ereticheskij Chajnik)	1
156	Stasilevich A. (AlinaStasi)	1
157	edmond2 (edmond2)	1
158	Kungurov A. (Alexey10)	1
159	Tynybekova G.R. (Gulaisha)	1
160	Bratsykhina T.A. (tatavia25)	1
161	Shapiro D. (xx_Da_Sha_xx)	1
162	Jj (Jj111)	1
163	Demidov M. (ceramicboy)	1
164	Lazarev K. (AnnQ1985)	1
165	Matvienko I.V. (bigboss2002)	1
166	Artemev L. (Leonid S.)	1
167	Mikhajlov (DohnJo)	1
168	Ivanchuk M.D. (hpcrt3)	1
169	Kruchinina D. (wizoomm1)	1
170	Glavatskikh A.N. (nnastya)	1
171	Diego (Diego00)	1
172	Stepanova (a lifelong learner)	1
173	Tikhonchuk A.Yu. (SaN0K)	1
174	Fedchenko A.D. (EtoAleksandr)	1
175	Vorontsov A.V. (yosida2923)	1
176	Kosichkin D.A. (Shizaabrama)	1
177	prytkova (oksana_prytkova1)	1
178	r A. (arb_)	1
179	Smirnov A.E. (p4tk)	1
180	syedina K. (kirnit)	1
181	Karimova -.-. (teta-borat)	1
182	Alvin (Jorabek2005)	1
183	Koptileuov X.S. (Xursand)	1
184	sobol' V. (veronicaso)	1
185	Gusev M.R. (julietpi)	1
186	Ivanov A.N. (0k1s)	1
187	Smirnov M.V. (onemisu)	1
188	vrazumova (vrazumova)	1
189	Unregistered	28

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References