Today's statistics at "SQL Exercises"

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

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References