Today's statistics at "SQL Exercises"

May 24, 23:01 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	Pup P.P. (pupa_pupa)	1	20	13		28
2	Ani N. (NaveenAni)	4			11	13	ban	ban
3	G L.A. (iuy88p)	6	8	5		12	ban	ban
4	loh L.L. (loh8932089320)	1	6	4		10	ban	ban
5	Sukhanov R.R. (roman228sqlbog)	2	5	-1		7
6	Konovalov A.A. (Aleksej Konovalov)	1	2	3		3
7	Odnokurtsev (AlFochino)	2	1	115		2
8	Lakalov D. (Meilleur_NG)	3			1	2
9	Vinogradova S.M. (Tigra1)	1	1	112		1
10	nikulina N. (mayfau)	4			1	1	2	3
11	Sarkis'yan G. (gennadi_s)	4			1	1
12	Malyutina M.A. (maliytina_marina)	1					15	27
13	Breslavska L. (Bresly)	2					15	26
14	Kostenko D.A. (Diana :P)	1					15	25
15	Bezuglova M.G. (Mariya Bezuglova 2.6)	2					15	24
16	Balkarov I.M. (peckerwood)	1					15	24
17	Patsyuk D.S. (dyankk)	1					15	24
18	Aidarova A. (allaroomie)	2					12	20
19	Firsova E.A. (Firsova)	2					15	18
20	Ani N. (Navee1234)	1					ban	ban
21	Zabavnikova U.A. (ulyazabavnikova)	2					14	18
22	Rybin (AlexRybchik)	1					14	17
23	IvanIvan I.S. (Coiiap5e)	2					11	16
24	Buchek V.D. (ViktorBuchek)	2					12	15
25	Tkacheva K.A. (krissttik)	1					9	15
26	Osipova S. (sonyayayayaya)	1					ban	ban
27	Busher (busherannaPPP)	1					10	13
28	Fedosova O.S. (ywz knnd)	1					8	13
29	Volodin (Durult)	1					8	13
30	Grachev A.V. (TheFlamingFoam)	1					7	13
31	Petrov I.A. (Y_one)	2					11	12
32	Valikhadiev (GiyasVAVAV)	1					9	12
33	Korchagin V.A. (VKorchagin)	2					7	11
34	Sidorenko R.V. (maloi2003)	1					7	11
35	Vakhitova A.I. (Aminochka)	2					8	10
36	Nazarov (Neislaw)	2					7	10
37	Torgasheva (senya_t)	1					6	9
38	Solodov (eugene_enegue)	2					ban	ban
39	Dolinina D. (Dol'ka)	1					8	8
40	Nikolaeva N. (Nata1507)	2					6	8
41	Meremkulova Z.A. (Zalina_mer)	2					5	8
42	Mischenko S. (lljihn)	1					5	8
43	TungSakhurovich (Hylech)	1					6	7
44	Potapov (povdkrcjsuc)	1					6	7
45	Yakovleva M.A. (melani_ie)	1					6	7
46	Oten Y. (CORTEZZ)	2					5	7
47	Gontarenko V.N. (GontarenkoVN)	2					4	7
48	Longinova A. (pik89)	2					4	7
49	Grudtsyn (CheSeVee)	1					4	6
50	squirrel (squir_el)	1					3	6
51	Blokhin (Blokhin Aleksandr)	1					3	6
52	Abaimov A.V. (Artenn)	1					3	6
53	Petrov (wiz11)	1					3	6
54	Sapronova V. (ParovozikTomas)	2					5	5
55	Kovaleva Yu.K. (Kov@l')	1					5	5
56	Avdeev I.I. (ZiGushka)	1					5	5
57	Nizamov A. (Nizartexxxx)	1					5	5
58	Fedotov Z. (O_R_I_S)	2					4	5
59	Nikolaeva D.A. (darya_1999)	2					4	5
60	shch (maryshch)	2					3	5
61	Rezchikova V.R. (leoccx)	2					3	5
62	Napso Yu.D. (ProVedmak007)	1					3	5
63	Bochkova (AnyaBo)	2					3	4
64	Sobolev (SRD_NN)	1					3	4
65	Revenko M.A. (CptDisturbed)	1					ban	ban
66	Slavgorodskij P.O. (paul_slash)	2					2	4
67	Tolstik D.N. (DiNiKiN_II)	1					2	4
68	Startsev I.V. (eblanchik1488)	1					2	4
69	Ivanov I.I. (some_numbers37)	1					3	3
70	Monakhov M. (mikhail_m)	4					2	3
71	zaz (serezh)	2					2	3
72	D'yachev M.A. (bagich24)	1					2	3
73	Uvaev A.A. (Pompilio)	1					2	3
74	Goryachev A.A. (selectra_991)	1					2	3
75	Ignatchik A.V. (yoj3003)	1					2	3
76	25cm M.H. (Mctraher26cm)	1					2	2
77	le S.E. (sedrus)	3					ban	ban
78	Ivanov I.I. (vlad91)	2					1	2
79	lin A.B. (swpetra)	2					1	2
80	Shevel' V.I. (Zverger)	2					ban	ban
81	Grevtsev Yu.A. (Nekonua)	2					1	2
82	A (h8w8)	2					1	2
83	Zamnius A. (alexey_zamnius)	2					1	2
84	Ch (TK_Lollipop)	1					1	2
85	bauer (tron350)	1					1	2
86	Saymon M.J. (IVOCLON)	1					1	2
87	Kondrashina T. (Tat'yana89tlt)	1					1	2
88	Il'in I.N. (Igor_Il)	1					1	2
89	Smagin D. (play23rus)	1					1	2
90	Vasiliev (onizuka27)	1					1	2
91	Gusev A. (EretiX_x)	1					1	2
92	Scherbakov (antmshch2024)	2					1	1
93	Zheleznyak E.S. (ZheleZka)	2					1	1
94	Varlamov G.V. (Gomer Kucha)	1					ban	ban
95	Yakushin A.V. (yakushin2)	1					1	1
96	Ospanova (amazing_2007)	1					1	1
97	Umoff Y. (iarspider)	1					1	1
98	Miami A.Y. (BBuling)	1					1	1
99	Polyakova (Diapol)	1					1	1
100	Kurochkin P.A. (qwrqwr)	5
101	Koptel'tsev V. (selber)	4
102	Sokolova O.V. (Ol'ga2026)	4
103	Krivenko P.V. (PaveldI/dt)	3
104	. (danya123456789)	3					ban	ban
105	Krasovskij E.A. (pegoopik)	2
106	Orlov A. (esterio)	2
107	a A.A. (Artur1q)	2
108	Shustova (LazyRainbow)	2
109	Brazhnikova L.A. (L47)	2
110	Kolesov I. (Kol)	2
111	Strukov (StrukovSA)	2
112	ASI (asi_sql)	2
113	Seregin (sk15)	2
114	Tsarev (itsmot9)	2
115	Ismailov A.E. (Guddzon)	2
116	Es'kova E.S. (Lizaveta113)	2					ban	ban
117	Nurzhanov E.N. (erjo)	2
118	Kish (Zhkish)	2
119	Smirom (Mooker)	2
120	Kazaryan N. (ninakazaryan)	2
121	Pegasheva (pegaselena)	2
122	Varenikov D.M. (Dmitriy Varenikov)	1
123	Vyazovetskov A.S. (alex_v)	1
124	Pakaj O.D. (ODePt_)	1
125	Makarov I.A. (_Bkmz_)	1
126	V (Tenyva)	1
127	quentin (bettinou)	1
128	Vladimirova (AnastasiyaV)	1
129	Goncharov A.V. (Kavi_kramer)	1
130	Pupkin A.A. (SnakeJkeeee)	1
131	Nazyrov R.R. (Davel)	1
132	Bykov (Rivakiel')	1
133	Sorokin S.D. (twilight_sparkle)	1
134	Guseinov A. (Ali_G)	1
135	Sedov P. (SanguisExtremis)	1
136	Danov K. (shirek)	1
137	Mutsol'gov A.D. (mehrun)	1
138	Ivanov N. (Izzuit)	1
139	Makharadze A. (armakharadze)	1
140	Siff A. (aoro)	1
141	Mizina (luadipa)	1
142	Vdovin S. (Rujan)	1
143	qwe R.Y. (TheWrongOne992)	1					ban	ban
144	Bykov (ChessCoach)	1
145	Gimranov I.R. (MladenecU)	1
146	Popkova T. (zerachara)	1
147	Edgeeva Ts.B. (tsaga)	1
148	Shikov V. (Viktor_TG)	1
149	Tryakin (zarnii)	1
150	Golovach L.G. (moonn1414)	1
151	Bejlarov V.N. (stylehalal)	1
152	Sokolov S. (kstovchanin)	1
153	Danchenko M.M. (iamahero)	1
154	Shestakova V. (LisaVet)	1
155	U M.I. (Umi190427)	1
156	Polyakov A.A. (Devops555)	1
157	Bykov (sky-shore)	1
158	Antonov (ozzy95)	1
159	Sagalakov V.M. (Va_log)	1
160	Bash P. (pitobash)	1
161	Ismagilov D.I. (IsmagDam)	1
162	Alekseeva K.O. (kanuuh)	1
163	Ivakhno D.O. (likaabos)	1
164	Ivanov I. (olegMagento123)	1
165	R. (Wra1th)	1
166	Zinov'ev Yu.I. (raccoon_)	1
167	Stepanov (LexFrom)	1
168	Komov S.M. (Komov S. M.)	1
169	Fossa (Fossagar)	1
170	Gde T.Ya. (Toywo)	1
171	iskarova L. (cyberdeadline)	1
172	Kucherenko A.S. (Nyusha87)	1
173	Lysykh V.K. (Usilitel')	1
174	Gizatulin V.S. (Vadim Gizatulin)	1
175	Boboeva (Kiba)	1
176	Ktkachenko S. (digital_stone)	1
177	Gerasin Y.A. (StStranger)	1
178	Khozhainov (wepunchik)	1
179	Furs (ImperatorMeo)	1
180	Q (ala4ste)	1					ban	ban
181	Bulgakov A.S. (temchik30)	1
182	Moroz A.I. (frostanast)	1					ban	ban
183	Vlad V.V. (Bleckeid)	1
184	Kolenko S.S. (Denitsa)	1
185	Bykov (DK1717)	1
186	Avdyunina V.D. (Ruibing)	1
187	Golovkov R.D. (Slava_2002)	1
188	Lastochkina (0Mak0)	1
189	Khakimov R. (Uncle_ru)	1
190	Trufanova Yu.E. (suliika)	1
191	Ledneva E.A. (ekarewly)	1					ban	ban
192	DMRITsD (TheCupOfMagic)	1
193	Kulikov A.Yu. (Ondrata)	1
194	Demiral E. (erend55)	1
195	Vukovic M. (mvuk80)	1
196	Bezb N.S. (Stoun)	1
197	Biba N.V. (gipnogaba)	1
198	Dey Y.V. (yaroslav53)	1
199	Klepets N.A. (NIkDream)	1
200	Doroshevich A. (velion34)	1
201	Usin M.-. (masino)	1
202	DanvFox12 D.F. (DanvFox)	1
203	S G. (PashaPoluk)	1
204	Kozvonina A.K. (bochak)	1
205	Tikhomirov V.B. (t-slava)	1
206	Kondrat'eva E.M. (kndrtvaa)	1
207	Polyakov (Prolan11)	1
208	vbt R. (woron2835)	1
209	Syuzev I.A. (Isiuzeu)	1
210	adamova A.A. (aybika1993)	1
211	joby A.I. (ajil)	1
212	Mee E. (EMMA99)	1
213	Potapova G.M. (timoka)	1
214	Alekseeva (Dinozavric)	1
215	Iyanov K.V. (kirieshka18)	1
216	Privalov R.E. (rprivalov)	1
217	Volkov I.L. (vans2302)	1
218	Orel D.A. (Dimassimusss)	1
219	Mutygullina A.V. (Mutygullina)	1
220	Baxshilloyev A.R. (AmirB)	1
221	Belyakov A. (alex0501199)	1
222	vtin2 (tinvtin2)	1
223	Maksimov A.V. (Andry2626)	1
224	Unregistered	43

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References