Today's statistics at "SQL Exercises"

August 24, 21:35 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	Skokov B.S. (leks$$)	2	1	42		1
2	Sharko Ya.V. (Engine22)	1	1	1		1
3	Markusov (mercurymoon)	1			1	1
4	Smirnova (Olga_Smirnova)	1					18	34
5	Ivanov (chuvak_bob)	1					15	26
6	ankudinov (arseniyank)	3					13	22
7	Serova M.M. (ssss.mmmm)	2					15	21
8	Konogorskij L.E. (konogorsky Leo)	1					13	21
9	Koala2 (Koala2)	1					12	19
10	Sheimukhov (sheymuh)	3					15	18
11	Leonova A.A. (AngeLeo)	2					13	18
12	Golotvina S. (sofasway)	1					14	17
13	Trishkova E. (elena_anima)	1					13	16
14	Sidorenko (Yulich)	1					12	15
15	Sviridov A.A. (rosnidatvovni)	1					9	15
16	Levin Yu.A. (pdestroyer)	2					8	13
17	Terekhov A. (terekhovart)	2					8	13
18	Korionova P.D. (Karina_fox_777)	1					8	13
19	Bonjovi (bomjour111)	1					8	13
20	Yusupova O. (Iusupova)	1					8	13
21	Zhur V. (mrvaroz)	2					7	12
22	Petrenko P.E. (Peafowl)	2					8	11
23	Borisov D.R. (Dmitry.Bo)	1					6	10
24	Tverdokhlebov D.S. (Danil_Bread)	1					6	10
25	Borodin A. (Rignar)	1					6	10
26	Kononova A.S. (anseko)	1					8	9
27	Laktionova N.V. (laktionovan)	1					8	9
28	Kitaev K.I. (Kostas1234)	1					6	9
29	lamer (-lamer-)	1					6	9
30	Hope (Doemu)	1					5	9
31	Shakhova M. (maydaymeow)	2					6	7
32	Sakreeva N.F. (sonat15)	2					6	7
33	Kobzeva D. (lindeur)	2					6	7
34	Vakulko A.V. (VAlexandrV)	3					4	7
35	Navitskas A. (Sana451)	1					4	7
36	Alibekov K. (forever_buumble)	1					4	7
37	Kulikov A.Yu. (Ondrata)	2					6	6
38	Myrkalykov (aslanbai)	1					5	6
39	Taurbek B.D. (Bagy)	1					4	6
40	A (JohnnyData)	1					4	6
41	Shagalov O.L. (TTC)	1					3	6
42	Kejl D. (kdanl)	2					5	5
43	Lishafaev D.A. (ZnOKs)	2					5	5
44	Mescheryakova (loli_po)	2					5	5
45	pinkman A. (asya pinkman)	1					5	5
46	Lugvischik (gopsweet)	1					5	5
47	Bychkou (rbychkou)	1					5	5
48	FFF G.V. (fnbvcxz)	1					5	5
49	Sultanayeva (Lowlights)	1					4	5
50	sar G. (konick_gs)	1					4	5
51	Klishin (F P)	1					4	5
52	Isakov (Isak)	1					3	5
53	Lcdma (LCDM138)	1					3	5
54	Sheludyakova (ShellSight)	2					4	4
55	Syrtseva V.A. (syrko)	1					4	4
56	Reva S.I. (s.reva)	1					4	4
57	Naumova M.A. (ArlianWolf)	1					4	4
58	Sergeeva L. (loserm)	1					4	4
59	Bulakhtin A.D. (R3Z1D3NT)	2					2	4
60	Bryukhanov A.N. (Antonus)	1					2	4
61	Gorodetska (yukasia)	1					2	4
62	Astrelina D. (smiling_corgi)	1					2	4
63	DMRITsD (TheCupOfMagic)	2					3	3
64	Sukharev A.S. (A_Greenberg)	1					3	3
65	Karniz V. (Realita)	1					3	3
66	Kadiev (Watermelon king)	2					2	3
67	Korolev R.V. (zouker)	2					2	3
68	LbIsy (Bla_Bla_2)	2					2	3
69	Kazantsev V.D. (kentiko_0)	1					ban	ban
70	Nikolaeva V.V. (@molly)	1					2	3
71	jadgfldsgf (jadgfldsgf)	1					2	3
72	Nasirov M. (M-nesir)	1					2	3
73	Oleinik V.M. (lllxxxlll)	2					2	2
74	Sidorova Yu. (yloko)	2					2	2
75	Tairov A. (2026atairov312)	2					2	2
76	test T.T. (yoyoja344)	1					2	2
77	Kukanov D. (kukish_)	1					2	2
78	a A.A. (rdctfvygbuhjnk)	1					2	2
79	underwood L. (larry17underwood)	1					2	2
80	Safonov (&rey80)	1					2	2
81	Ryabovskaya A.P. (anya_pro_spler_2004)	1					2	2
82	Basova (Marie_Mikey)	5					1	2
83	Ibo K. (Kemchik)	2					1	2
84	Shinkevich M. (Gvat)	1					1	2
85	Myasnikova P.O. (Polinnn)	1					1	2
86	Tsarev O. (otnzxcvbnm)	1					1	2
87	Shakaryan B. (bogdanshakaryan)	1					1	2
88	Muratov D.A. (Enovostuck)	1					1	2
89	Khusnutdinov D.D. (Abdulxamid)	1					1	2
90	Kharisov A.Ya. (Azamat777)	1					1	2
91	Bogatyrev N.V. (BNV2873)	1					ban	ban
92	Ilina N. (lkjahfjkseb)	1					1	2
93	Yakovleva (nyans)	1					1	2
94	23 (ll23lll)	1					1	2
95	Lyakh (LinaL_)	1					1	2
96	Saukin U. (novichok_PA)	1					1	2
97	Murlyk M.M. (Myau Murych)	1					1	2
98	Kanunnikov P.V. (Inoj777)	2					1	1
99	ff F.F. (zima_b1lue)	1					1	1
100	Stytsyuk N. (natalia19930420)	1					1	1
101	l (loww)	1					1	1
102	iVanov (john86)	1					1	1
103	T (TA_IIII)	3					ban	ban
104	Sarkis'yan G. (gennadi_s)	3
105	Kokoulina E.A. (janekoko)	3					ban	ban
106	Kalen A.A. (Funfe)	3
107	Koptel'tsev V. (selber)	2
108	Tsvetkova S. (swetlana0613)	2
109	nope (petop)	2
110	Khakhulina Yu.V. (element21)	2
111	Leschenko (Verochka_21)	2
112	Zaverschuk V. (kemma)	2
113	Semenov V. (Vasya92)	2
114	Gusev A.O. (NowOrNever)	2
115	Khabibullin A.R. (Aleksandr_Kh)	2
116	Nesterov D.A. (saha909)	2
117	Grigor'ev (DoM1NAtoR-RU)	2
118	gogov G.G. (krub)	2
119	Borovikova E.I. (Lizavetty)	2
120	Inozemtseva (Malutka)	1
121	Khripkov (@ndrey)	1
122	Sankevich (Don)	1
123	Shibaev (saah)	1
124	Krasovskij E.A. (pegoopik)	1
125	Altashin S.V. (burrito)	1
126	keieiuty (keieiuty)	1
127	Zagorul'ko E. (Helen@)	1
128	Woland (Wolandd)	1
129	Vinogradova S.M. (Tigra1)	1
130	Abramenkova (muroni)	1
131	Emelin A. (Streyd_89)	1
132	Sergeev V. (32b)	1
133	Zubchevskij (ZAVZAV)	1
134	Egorovskaya V.B. (Afalina)	1
135	Koshkin D.V. (lookatkoshkin1)	1
136	Leont'ev D. (leontyevd)	1
137	Kazakova A.A. (KazakovaAA)	1
138	Shikovets A.D. (Fortune88)	1
139	Tsay S. (Sergey Ts.)	1
140	Adel'shin D.A. (Dim0n21)	1
141	Chebaniuk (white wolf_1111)	1
142	Makhotkin S.O. (mborsch)	1
143	Brooda (Brooda(Brooda))	1
144	Mal'tsev S. (Wuxss)	1
145	alex Q.C. (testtest235)	1
146	Malets (Vuzei)	1
147	Turbin V. (Viachko)	1
148	A N. (Niks13)	1
149	Voronkov E.K. (KypJIbIka)	1
150	Kulikov V.S. (VSK99)	1
151	Papliauko (Emikox3)	1					ban	ban
152	Basov (Serge_1024)	1
153	Smirnov A.S. (parazorro)	1
154	lit (Liiton)	1
155	Antonova O.S. (Oksana265)	1
156	Popova (Popitt)	1
157	Brajnin S.O. (brusha)	1
158	Golovkin G.A. (Skarlatina)	1
159	Shikhanova D.S. (qwert21)	1
160	Boyarov A.A. (boyasha)	1
161	Baranovskij D.V. (danichka_13)	1
162	Novikov T.V. (nv_tm)	1
163	Yakhutkina A. (Ramenka)	1
164	Bykov (sky-shore)	1
165	Potikhenskij Ya.K. (Potixenskij Yan)	1
166	Rodin (uoloki)	1
167	Spodarev S.R. (Sergeant_2004_35)	1					ban	ban
168	Zhilinskaya (shaman0303)	1
169	Popov I.A. (tsukerin)	1
170	Sweatpea (sweatpea)	1
171	Belonog A.A. (Andrey_Bel)	1
172	Korolyov V.V. (CHOTKIY)	1
173	Bespalova A. (Aleksandra2409)	1
174	R. (Wra1th)	1
175	Folomkin I.N. (onevay)	1
176	Zaika K. (Kirill111111)	1
177	sd (dchekg)	1
178	Maksimovich (serg_sputnik)	1
179	Sad A.S. (ssaqerke)	1
180	Skibin V.V. (SQL_vvs)	1
181	Lysykh V.K. (Usilitel')	1
182	S (sergeenko@phystech.edu)	1					ban	ban
183	Akameeva S.V. (SVA1)	1
184	Nusratullina M. (Masyakan)	1
185	Shaposhnikova E.V. (LARAQ)	1
186	korz (sinceskinqwerty)	1
187	Krikunov V.V. (Krikunov_Vitalik)	1
188	Mastyko M.V. (ladds)	1					ban	ban
189	Mikaya (Gio9248)	1
190	Kurakin I.K. (SJFY)	1
191	Tatarinov (Yujiro)	1
192	vorob (nikadema)	1
193	Avdyunina V.D. (Ruibing)	1
194	Evgen'ev (gek_c)	1
195	Romanov (JerseyDevil)	1
196	Isaeva K.A. (krzlxw)	1
197	Murat M. (murat_mukhammed)	1
198	Pushkarev S. (PSV_n)	1
199	Burtonov A.V. (tak to)	1					ban	ban
200	Berseneva T.M. (Bersa_3785)	1
201	Strilenko (Liamorte)	1
202	Zhopkin (Vanek_destroyer)	1
203	Sal'khova A.A. (Nastya1823)	1
204	zamanova (gulkhanim)	1					ban	ban
205	zamanova (gulkh)	1					ban	ban
206	Dul'se A.A. (dulce)	1
207	Ageeva (Ush1m1ya)	1
208	Sovetkhan D. (Diyar)	1
209	Mathematicienne (Mathematicien)	1
210	Kosatkin P. (PaulTronix)	1
211	Ibragimov (RobBot1337)	1
212	Donelyuk A.G. (DonelyukAnna)	1
213	Abdusamatov D.X. (Rydo)	1
214	Abilkhan Y. (AYERS)	1
215	Bublikov A.G. (geterozis22)	1
216	Bezuglenko (artem_enotenko)	1
217	Surname (Void_107)	1					ban	ban
218	Murzina A.I. (riarinai)	1
219	Popandopulo (popandopulop)	1
220	Solomnikova (AlexSolom)	1
221	Popova A.O. (AnnaPo12)	1
222	sss (bobeflampy)	1
223	Kolbaskin I.A. (kolbasskin)	1
224	Markova M.P. (Marina_Uchitel)	1
225	GOGOYO G.G. (GOGOYO)	1
226	Vas (zookeeper123)	1
227	KIRYaKOV (willdi)	1
228	Protsenko A. (zelfix)	1
229	Akimova (anastasiakima)	1
230	Boldyreva (anvta)	1
231	Revina (revusha)	1
232	Ovcharenko A.S. (Ovchrnk)	1
233	K S.I. (sergo_3666)	1
234	Gar'kusha N.A. (frkw)	1
235	Arzamasova (Nastya1161)	1
236	Erofeeva (tochbka)	1
237	Petsgol'dt P.K. (Pavel1PK)	1
238	Rudenko A.R. (Angeelll)	1
239	Gorov A. (AlexDeFenDeR)	1
240	Unregistered	45

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References