Today's statistics at "SQL Exercises"

May 31, 23:16 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	. (danya123456789)	1	2	-1		3	ban	ban
2	sql (winchester1)	2			2	2
3	Petrova D.S. (shenikaq)	1			2	2
4	Vinogradova S.M. (Tigra1)	1	1	114		1
5	Davletshin T.M. (Rofleech)	1	1	-1		1
6	Nechaeva A. (alicenech)	2					74	117
7	Peshkov T.A. (Timokha_555)	4					50	75
8	Grachev A.V. (TheFlamingFoam)	1					ban	ban
9	Pil'chinov I. (Sengoku)	1					ban	ban
10	Muzaffarov G.K. (muzaffarovg)	1					15	26
11	Shuklin E.A. (ydreamin)	6					15	24
12	Golub V.O. (golvik123)	1					15	23
13	vanya7001 V.V. (vanya7008)	1					ban	ban
14	Micksi (Raincloud)	2					15	22
15	trup (trupq)	1					15	22
16	Tangribergenova M. (TANGRIBERGENOVA MALIKA)	1					13	22
17	Semenova N.K. (nataliiamiu)	1					15	21
18	Mironyuk M. (Matvey6M6)	1					15	19
19	Maidanov (\|Maksimus\|)	1					11	19
20	Trinh L. (loc99)	2					15	18
21	vanya7002 V.V. (vanya7001)	1					ban	ban
22	Ponomaryova M.O. (NeliOdei53)	2					ban	ban
23	Avgust (utahari)	1					14	17
24	Tikhij D.Yu. (snizyvverh1)	2					13	16
25	Popov V. (chakolovkaya_94)	1					13	16
26	Rybin (AlexRybchik)	2					ban	ban
27	Putilov A.K. (obMANIII)	2					10	13
28	A (h8w8)	1					8	13
29	Riser (SevenTwo)	2					9	11
30	Fedosova O.S. (ywz knnd)	1					7	11
31	Ivanova E.I. (eve.eve)	2					6	11
32	Alok (DanyaAlok)	1					6	10
33	LarionovaVera.pro L.L. (LarionovaVera)	2					7	9
34	Kos'yanenko (Babuli4ka)	1					7	9
35	Korovyakovskij A.S. (korokoro)	1					7	9
36	Anonov (m0n0warg)	1					7	9
37	Ziiangirova G. (Zi.Gulchachak)	1					5	9
38	Gubanova (Olalya)	1					5	9
39	Rozanov +. (maximilian_rozanoff)	2					6	8
40	Tolstov K.V. (TolstovKonstantin)	1					6	8
41	Afanas'ev S. (TIGR228)	1					ban	ban
42	Klepets N.A. (NIkDream)	4					4	8
43	Fedorov A.E. (Albertos_uwu)	2					6	7
44	kykyryza K.K. (kykyryza.a)	2					6	7
45	Chebotarev P.A. (Chebaa)	1					6	7
46	ozzlik O.O. (ozzlikOz)	2					5	7
47	Popuga A.A. (1Kanato)	1					5	7
48	Karpov (Polycarp)	1					4	7
49	Lapina (as_lapina)	1					6	6
50	Kokurina Yu. (Jull_2611)	2					5	6
51	LbIsy (Bla_Bla_2)	1					4	6
52	Uvaev A.A. (Pompilio)	7					3	6
53	Berkut D. (Reep1)	3					3	6
54	Zabavnikova U.A. (ulyazabavnikova)	2					3	6
55	G (Gerzhan)	1					5	5
56	Bochkova (AnyaBo)	2					4	5
57	Kolobovnikov B.R. (bodyan42)	1					4	5
58	Tarabukin (dmitriitarabukinnickname)	2					3	5
59	Khakimullin A.R. (cranever)	1					3	5
60	BOSS T.-. (Tima6548)	2					4	4
61	Slot M. (Slot_1q)	1					3	4
62	Zubkova (Dasha2003)	1					3	4
63	Lisin A.V. (TimFoxers)	1					2	4
64	Vukovic M. (mvuk80)	1					2	4
65	Moldakynov A.A. (Nomad444)	1					2	4
66	tsoy (hznikdima123)	1					3	3
67	Nizamov A. (Nizartexxxx)	1					3	3
68	Yakovleva (nyans)	1					3	3
69	Nazarov (Neislaw)	4					2	3
70	Domejko I.A. (Domejko)	1					2	3
71	Stepanov (LexFrom)	1					2	3
72	Shevel' V.I. (Zverger)	1					ban	ban
73	Stepanov (merphy11?)	1					2	2
74	Tony (ToyTonySony)	1					2	2
75	Bubanov A.I. (krytoupapa98)	1					2	2
76	Ivanov I.I. (vlad91)	3					1	2
77	ss A.S. (SashaSS)	2					1	2
78	drozd P.P. (makronchik)	2					1	2
79	Mi (Valentisiami)	2					1	2
80	Potapov (povdkrcjsuc)	2					1	2
81	Shure V. (VladimirShure)	1					1	2
82	efimov (Vonny)	1					1	2
83	Mazitova E. (Elsend)	1					1	2
84	qwe R.Y. (TheWrongOne992)	1					ban	ban
85	Brazhnikova L.A. (L47)	1					1	2
86	iman A.A. (imparrrtial)	1					1	2
87	Shkirova (Son'kins)	1					1	2
88	Potapova (Potapova126)	1					1	2
89	Sovetov R. (hiropu)	1					1	2
90	Rajskij I.A. (elaphilin)	1					1	2
91	Doroshevich A. (velion34)	1					1	2
92	Smagin D. (play23rus)	1					1	2
93	Tikhomirov V.B. (t-slava)	1					1	2
94	Aziev (Dzhon Izidor)	1					1	2
95	Volkov I.L. (vans2302)	1					1	2
96	Lyapun D.V. (dara334323423)	1					1	2
97	Vasil'kov V.I. (Student751917)	1					1	2
98	Goldobin E.G. (prm259)	3					1	1
99	Busher (busherannaPPP)	2					1	1
100	Khelenova Kh. (alen_qa)	2					1	1
101	Kadyrov A.A. (nunselmo)	2					1	1
102	lin A.B. (swpetra)	1					1	1
103	ivanov (Aleksandr4994)	1					ban	ban
104	Ruchkin S.S. (ru4i)	1					1	1
105	Belyatskiy A.A. (ABOBA67)	1					1	1
106	Orlov (beriliy)	1					1	1
107	Shadrin P.S. (Pavel_one)	1					1	1
108	Kurochkin P.A. (qwrqwr)	3
109	A B.V. (ginarubygina)	3
110	Sarkis'yan G. (gennadi_s)	3
111	Safronov P.A. (Paulus73)	3
112	Makarov I.A. (_Bkmz_)	2
113	Zhivilov (LT_)	2
114	Gasevskij (I3acsi)	2
115	kochetov I. (ilyaali)	2
116	aaa A.A. (aaabbbdsg)	2
117	Odegov A.I. (KovroLitik)	2
118	Komov S.M. (Komov S. M.)	2
119	Zhiryakov V.V. (vladvladzero)	2
120	Sergeev I.A. (skorodum)	2
121	Gleb O.O. (anbelivbl)	2					ban	ban
122	Obukhov A.V. (Alex_71)	2
123	Daurenbay N.D. (Vsvsvdvdv)	2
124	Ermakov A.M. (argeliaj)	2
125	Khokhlova A.A. (decadentangell)	2
126	Yu A. (AzamatCoder)	2
127	Vyazovetskov A.S. (alex_v)	1
128	V (Tenyva)	1
129	Krasovskij E.A. (pegoopik)	1
130	Koptel'tsev V. (selber)	1
131	Gorbunov M.S. (gms)	1
132	Rozanova S.A. (SvetlanaRozanova)	1					ban	ban
133	Damrin S.V. (stevedamrin)	1
134	Artemenkov P. (39525D)	1
135	Petrov N.V. (Nick21)	1
136	Golimbekov (EdsqlBek)	1
137	Vojtenok I.A. (n1rvanana)	1
138	Kapustina M.A. (kapustka)	1
139	Petrova V. (pvictori)	1
140	Kotov (321Napalm)	1
141	Zajtsev (Zaytsev-AV)	1
142	Guseinov A. (Ali_G)	1
143	Dzhunushaliev A.B. (Atlasys)	1
144	Nevazhno (ruslan43)	1
145	jain S. (lajja)	1
146	Yurchenko Ya.V. (Fizmarazmat)	1
147	Pomirchiy Y.N. (pomirchiy)	1
148	Shevchenko N. (HeyNorth)	1					ban	ban
149	Khajrullin Yu.R. (User201122)	1
150	Shikov V. (Viktor_TG)	1
151	Rod'kin (AlexRod)	1
152	Tatevosyan (danana)	1
153	Ponomaryova M.O. (NeliOdei)	1					ban	ban
154	Lugovskoj A.E. (Flexlug)	1
155	Akhtyamov D.G. (Akhtyamov)	1					ban	ban
156	Prisyazhnyuk A. (StarPepe)	1
157	Khamizova M.S. (Mkhs)	1
158	Kuznetsov A. (Asmodei_IV)	1
159	Pavlov I.A. (WhiteCat110)	1					ban	ban
160	Nurgaliev A.N. (nurgalievart)	1
161	Kushnir S.A. (Wishmaster190281)	1					ban	ban
162	Antonov (ozzy95)	1
163	241 4.1. (shiningsheep1)	1
164	Ulitin A.I. (lonustv)	1					ban	ban
165	Denisov S.A. (serjantus)	1					ban	ban
166	Golovkin I.A. (GHOST2508)	1
167	Ivanchenko Yu.V. (Burukhtan22)	1
168	R. (Wra1th)	1
169	Korolev R.V. (zouker)	1
170	Musatova E. (milena.cheer)	1
171	Emel'yanov A.S. (Andramemnon)	1
172	P (neke_paz)	1
173	Babunova (BabyPanda)	1
174	Sherstunov V.A. (barovo)	1
175	iskarova L. (cyberdeadline)	1
176	Lysykh V.K. (Usilitel')	1
177	Solodov (eugene_enegue)	1					ban	ban
178	Minaeva S.A. (Smina)	1
179	Anesyan A.A. (Ara23)	1
180	Murdalov I.S. (ibrams91)	1
181	Bulatov D.A. (player2378)	1					ban	ban
182	Zinkevich A. (Sky_fox18)	1
183	Shmyrev Yu.A. (quadrotuner)	1
184	Sokolova O.V. (Ol'ga2026)	1
185	Kovalev M.A. (Maxiiiiiiiiiii)	1					ban	ban
186	Ch A. (Nisti)	1
187	Sivakova (anna666)	1					ban	ban
188	Rezvan (SilentLand33)	1
189	Rakova V.R. (veronika_rakova)	1
190	Erykalin (IJAKIBS)	1					ban	ban
191	Guteneva (iam2304)	1
192	Egorova M.Yu. (egorova.m.u.)	1
193	Golikova K.K. (kragl)	1
194	Il'in I.N. (Igor_Il)	1
195	Ryzhenkov A.S. (Andreu_grey)	1
196	Usin M.-. (masino)	1
197	Sapsin M.A. (Maksim Sapsin)	1
198	nikulina N. (mayfau)	1
199	Shirochenko D.S. (Shiko_DS)	1
200	Majer A. (AntonM66)	1
201	Tarasov A.S. (FableDev)	1
202	Nekrasov (Musetskiy)	1
203	Petrov I. (nameforestsea)	1
204	Ivanov (taketaketake)	1
205	Bolotov (MrGothic)	1
206	Yes A.N. (Specialist71)	1
207	Leb A.A. (faustus12351)	1
208	D A.V. (naxxa)	1
209	matvii1 (matvii)	1
210	Mkts M.M. (Mkts)	1
211	Stepanchenko (Bubulka)	1
212	Yakush A. (yakush01)	1
213	Khoritonov S.N. (kuba24)	1
214	Yamschikova T.V. (Amplituda)	1
215	sidorova T. (ToriS)	1
216	Unregistered	30

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References