Today's statistics at "SQL Exercises"

June 23, 18:19 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	Chunin E. (Greedy_Gnome)	2			4	6
2	Avdeenko I. (Igor_001)	2			1	3
3	P I.*. (IrinaPetr)	2	1	83		2
4	Lavrikov (Lavr309)	1	1	1		1
5	Jobs F. (SQL-Penetrator)	1	1	2		1
6	serva4ok (serva4ok)	1					15	27
7	Nusipov D.E. (pingvinittos)	1					15	26
8	Kharitonov N. (RogueLikeLHR)	2					15	22
9	Tarasov (phuftRe45)	1					15	21
10	krutyshka K.K. (batya1337)	1					15	18
11	Yusupov T. (senddd)	1					15	18
12	vagaev I.A. (l1998)	2					14	17
13	Pahadayeu A. (AndOffline)	1					10	17
14	Aksenov D.A. (ak5eda)	1					9	15
15	Barakov A. (BarakovAsyl)	1					9	14
16	Ivanov N. (nick8998)	1					8	14
17	musazada S.S. (sako019)	2					ban	ban
18	Shilova I.V. (YakumoDate)	1					9	13
19	L L.L. (lbrstq)	2					9	12
20	Polikarpov K. (kir0206)	1					8	12
21	Sokolova E. (eva765)	1					8	11
22	Mishra (Ginger457)	2					7	11
23	Malgin (zybastik_)	2					7	9
24	Sal'manov O.P. (3303)	1					5	9
25	Ivanova A.A. (Nasstia449)	1					7	8
26	Lukpan S.M. (Sanzhlukpan)	1					7	8
27	Ivanov V. (vityansk)	1					5	8
28	Lyakhov N.V. (Nikitosichek)	1					5	8
29	Babayan A. (Artur.4443)	1					5	8
30	ZH K. (KOKS1996)	2					6	7
31	Shaulis (DeGrin)	1					6	7
32	Stasenko P.I. (polya_st)	1					6	7
33	shaposhnikov (stn613)	1					6	7
34	Zhukova K.I. (Winniw)	2					5	7
35	Pushkarev S. (PSV_n)	1					5	7
36	Ajdaeva M.Sh. (marivanka)	2					4	7
37	Babeikin E. (Reliquell)	1					4	7
38	Daron (Daron_g)	1					4	7
39	Langlits (milkeyway)	1					4	7
40	Kate3003 (KateGru)	1					5	6
41	Gus A.M. (yu1kkken)	2					4	6
42	Soboleva I.Yu. (Matreshka_)	3					ban	ban
43	Zhukov N. (sariya_)	2					3	6
44	Saperov S.V. (s4per)	2					5	5
45	Vorotnikov Yu. (Juriiy)	1					5	5
46	Yarmolyuk N.V. (natalitalk)	1					5	5
47	Vendeev R. (Zetalot1)	1					5	5
48	Tikhomirov V.B. (t-slava)	2					3	5
49	Lagutin D. (xiduku)	1					3	5
50	Salamakhin I. (SQLInz)	1					3	5
51	mayers R. (rakimmayers)	2					4	4
52	Popova K.A. (Ksen123)	2					4	4
53	Fomin (gorgen)	1					4	4
54	QWEQWE Q.Q. (GATS322)	1					4	4
55	Avkhadeeva A.R. (Malinka_tim)	1					4	4
56	Grega M. (demolisher1425)	1					4	4
57	Isaev I. (Ivanish2034)	1					3	4
58	Kyroto1 A. (Kyroto)	1					3	4
59	ssl (compl4)	1					3	4
60	Artsyshevskaya I. (esc_del)	2					2	4
61	Petrov A.I. (Tobo-bobo)	1					2	4
62	Terekh V. (m3ntor)	1					2	4
63	Pak M.A. (AYomayo)	1					2	4
64	Narembekov T. (fountaineww)	1					2	3
65	D (IlyaDukh)	1					2	3
66	Malosaj N.S. (nadezhdam)	1					2	3
67	Kotova (JulKotoff)	1					2	2
68	ivanov (zimz)	1					2	2
69	Irina (Emberlaki_79)	2					1	2
70	--- (lockjaw556)	2					1	2
71	test (qwerty37892)	2					1	2
72	Naryshkina T. (TatianaN)	1					1	2
73	Palamarchuk Ya.V. (Yaroslav Palamarchuk)	1					1	2
74	Petesheva (Yung Satan)	1					1	2
75	Anesyan A.A. (Ara23)	1					1	2
76	Obukhov A.V. (Alex_71)	1					1	2
77	Bezhnar A.I. (artikius)	1					1	2
78	Lebedev E.A. (hardbit)	1					1	2
79	Samsonov A.Yu. (Bot_to_be)	1					1	2
80	Semenov D.-. (Dmitry.S.)	1					1	2
81	Kut'enkova M.A. (Tarien)	1					1	2
82	Shevtsov K. (KonstantinXL)	7					1	1
83	Volkov (botan1800)	3					1	1
84	Bychkov S.A. (TeaInTheCup)	2					1	1
85	Ivanov M.A. (Yokki)	2					1	1
86	Khaziev (jiesoryb)	1					ban	ban
87	Markizova A. (alice_denovna)	1					1	1
88	Pilosyan D.O. (diiaane)	1					ban	ban
89	Iva E.A. (PlatinumKub10)	1					1	1
90	Kho N. (lilnuri)	1					1	1
91	Volkov (Glavstroy)	1					1	1
92	FoolSelfTaught (Foxtorotttt)	1					1	1
93	Krapivina (rumianek)	1					1	1
94	Borovikova E.M. (e_katee)	1					1	1
95	Asanova E. (Ellli)	1					1	1
96	ivanova L. (liaad)	1					1	1
97	Williams B. (BW)	4
98	Krasovskij E.A. (pegoopik)	4
99	fioletovaya (fioletovaya2)	3
100	Sergeevna (Angelina Sergeevna)	3
101	Kurochkin P.A. (qwrqwr)	2
102	Lom A.V. (andy405)	2
103	Andrey A.A. (Andrey221)	2
104	Sokolov (zelenogrodov)	2
105	H (foxis211)	2
106	Medvedev A.A. (Meddvedd)	2
107	Romanov E.D. (megakiller221105)	2
108	Zhiryakov V.V. (vladvladzero)	2
109	Boronbaev D. (senpaidias7)	2
110	Gusev (superguzlik3228)	2
111	Lyubimenko E.V. (lenwa)	2
112	S (n1pron)	2
113	Voronov R. (edemr26)	2
114	Taigarayev Y.K. (ZeroFGM)	2					ban	ban
115	F (Leroooka)	2
116	Kuz'mina E.V. (Fiction)	1
117	Koptel'tsev V. (selber)	1
118	Tolstopyatov M.S. (Maksim74757)	1
119	Ivanov (Yurikus)	1					ban	ban
120	Lessenger K. (zero_main_log)	1
121	Stul'nev R.O. (kalter1213)	1
122	Agafonov M. (FlabsteR)	1
123	Sitnikov S.V. (Zlobn1y)	1
124	Sah (tomatiks)	1
125	Ayupov (asdfasd)	1
126	N. A. (Argon7)	1
127	Romanenkova (ATRom)	1
128	Tsay S. (Sergey Ts.)	1
129	Madaev A.P. (a.madaev)	1
130	Vakul'chenko A.A. (alex50023)	1
131	Ivanov I.I. (vlad91)	1
132	Fedoronchuk K. (KusKolbasy)	1
133	Dyagileva O. (oad)	1
134	Sergeenko K. (sergeenkoki)	1
135	Abushaev A.N. (Algiz)	1
136	Ulukpanova S.D. (USD29)	1
137	Bembeev A.V. (karagiozis)	1
138	Chulyukov N.V. (AzazeeL)	1
139	Fomichyov A. (AlexFomichev)	1
140	Shabanova N. (ssssh)	1
141	Yurchenko Ya.V. (Fizmarazmat)	1
142	Igoshev A.S. (Igoshev)	1
143	babayev N. (niziko)	1
144	Avdotchenkov D. (dimka1234)	1
145	maslenikov O. (Filengun1)	1
146	Misnikevich R.M. (RusMich)	1
147	XXX (ArgumentException)	1
148	Dogadov S.V. (Serzho)	1
149	Pechkin R.E. (ZiRus)	1
150	Markova (Irena280880)	1
151	Shmulyov (es70)	1
152	Golikov P. (The Great Serpent)	1
153	Sarkis'yan G. (gennadi_s)	1
154	ss A.S. (SashaSS)	1
155	Charnenko D. (Capusta007)	1
156	Rodin (uoloki)	1
157	Batrukova E. (ellovesma)	1
158	Sprout (sprout)	1
159	Konkin F.I. (fedosische)	1
160	Kravchuk O.T. (Popori)	1					ban	ban
161	Yana Y.Y. (KeiYana)	1					ban	ban
162	R. (Wra1th)	1
163	Stupin E. (rznglz)	1
164	Shorin N.I. (libtach)	1
165	Komov S.M. (Komov S. M.)	1
166	bauer (tron350)	1
167	Ferum (What_Is_Love_)	1					ban	ban
168	Lysykh V.K. (Usilitel')	1
169	Kokin Z. (FlexTure)	1
170	S (sergeenko@phystech.edu)	1
171	Boboeva (Kiba)	1
172	Yastrebov D.D. (Yakimori)	1					ban	ban
173	Rodnikov N.A. (RodichKrut)	1
174	Odnokurtsev (AlFochino)	1
175	chachibaia (gegi)	1
176	GG (Chamomilla)	1
177	Duka L.V. (data_manipulator)	1
178	Aksenov (NomenChok)	1
179	Desyatkov A.A. (Devastated666)	1
180	Bogatyrev N.V. (BNV2873)	1					ban	ban
181	Gladysheva M. (KittyZebra)	1
182	Pereyaslavskaya I. (irrrika)	1
183	Schegol' Yu. (JulyaSchegol)	1
184	Kochetygova (ya_maha)	1
185	K (Levanlomg)	1
186	Rakhman Zh.B. (Jamaica99)	1
187	Skorіkov D. (devus)	1
188	Panov A.A. (AAPanov)	1
189	Katsubo (santekhnik yaits)	1
190	Rybin (AlexRybchik)	1					ban	ban
191	Zakharov (svyyy)	1
192	Tagirov R. (batman88)	1
193	Kam (squble)	1
194	Tret'yakov A. (Tolyas88)	1
195	niko (lenovolog15)	1
196	Shashok (hallucination)	1
197	Zharchenko Z.S. (wwz_zww)	1
198	Sokolov A.E. (sssokol)	1
199	Pakhomov A.S. (pahomovas)	1					ban	ban
200	Temirgali N.K. (NurTem)	1
201	Petrov P.P. (petr_testik1)	1
202	Kuznetsova D.A. (DashaNov)	1
203	Mal'kov G.V. (Grigor1i)	1
204	Averin A.R. (alverin1310)	1
205	Pakhomov (play_boy_x)	1					ban	ban
206	Pedur (gitaristdaone)	1
207	K. A.V. (AlexanderK84)	1
208	dYaTLOV G.D. (GoshaBillis56)	1
209	Zvereva M.M. (maria.zvr)	1
210	Vashurova O.A. (O_Vash)	1
211	1 1.1. (feriell)	1
212	Artamonova A.A. (AnastasiaArt)	1
213	Iskorneva A.A. (alinkskrn)	1
214	Shagiakhmetova S.V. (sqlsvetlana)	1
215	Ignatyevskaia M. (Mariya Ignat'evskaya)	1
216	Medvedev (Ed303)	1
217	Dymov M.M. (smokemx)	1
218	korolev S.A. (_jjjokker_)	1
219	Vasil'eva A.V. (embrance)	1
220	Sabbo (Rita.S)	1
221	M (mqtraher)	1
222	Markelova T.I. (Azunya)	1
223	Gryaznova O.A. (vexera)	1
224	Magnotta M.C. (L4rpin)	1
225	Unregistered	39

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References