Today's statistics at "SQL Exercises"

December 27, 21:38 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	Rakitina M.A. (mskr)	2			10	11	15	25
2	Dolbyshev D.M. (GeTRIT)	1			10	11	ban	ban
3	Shikhmurzaev R.S. (Rahim)	2			10	10	85	134
4	Vukolov A. (al.vuk)	2			3	8
5	Kuchukova (nkmtsu)	1			3	3	14	16
6	Ivanov (iivanov123)	1	1	3		2
7	Arakcheeva P.R. (Ara_888)	1			2	2
8	Matushkin (leshchic)	1			1	1
9	Nurlanov N.N. (Nurlanov Nurbol)	1					65	109
10	Permskij (MP3123456789)	1					ban	ban
11	Perskii (MarkusBrown111)	1					ban	ban
12	Timur T.T. (Timur68752134)	1					ban	ban
13	Perskij (MP41234567890)	2					ban	ban
14	Loseva A.D. (Anastasiya98762113244)	2					ban	ban
15	Koloshina V.S. (prokhorik)	1					15	23
16	Ermokhin D. (BZDanya)	1					15	22
17	Irbakhtin M. (trumpyxa)	1					15	22
18	Semenov E. (sea222)	3					15	21
19	Alanov A. (Alan_Andrews)	1					12	19
20	cnbfd F.D. (scrfedgtdfgvbnjfgh)	1					15	16
21	Lecfkbtdf B.Y. (beddddddllka)	1					12	15
22	Fedoruk I.A. (yvan123)	2					10	13
23	Timashkov M.S. (Max_Tima)	2					8	13
24	default (shaman_isip_1)	1					ban	ban
25	Setinin D. (endrx)	1					7	9
26	Maharramov A. (Maharramov)	2					5	9
27	Shuvalov (Spectre1915)	1					5	9
28	Nikitinskij (walidemars36)	1					5	8
29	P I.*. (IrinaPetr)	3					3	8
30	Potapova N. (filionk)	3					6	7
31	Rishat N... (Nurikhunt)	2					6	7
32	Razin (Vladik96)	1					6	7
33	Kolobin N.S. (gerod0t)	2					5	7
34	Ievlev (ArtemIevlev)	1					5	7
35	Irbakhtina A. (anyutkaSQL)	2					4	7
36	Vishnevskij D. (R@ZOR)	1					4	7
37	Zolotarev (Yura Zolotarev)	1					5	6
38	Dotsenko R.K. (kon4a)	1					4	6
39	Neklyudov (VFoxxx)	1					4	6
40	Goncharuk (yanad777)	2					5	5
41	Doroshevich A.R. (Alexei2019)	1					5	5
42	Saraev E.P. (Ulman13122)	1					5	5
43	Slodak (Pan Slodak)	1					5	5
44	Lakalov D. (Meilleur_NG)	1					3	5
45	Ryabov A. (Slavander)	1					3	5
46	Khakimov M. (Mikael' Lamber)	1					4	4
47	n (ivverlien)	1					4	4
48	Filippova (Vrishabhanu108)	1					4	4
49	Osetsimskaya (grib1)	1					4	4
50	khekh (imorosa)	1					3	4
51	Marukhin A.O. (temq)	1					3	4
52	Wand M.T. (MagicWand)	2					2	4
53	Kulagin K. (kmascot)	1					2	4
54	Bogdanov (mathcoder)	1					ban	ban
55	Eeee K. (HrenZnaet)	1					2	4
56	kl (RND1990)	1					3	3
57	Raznitsyn (Pepperni)	1					3	3
58	Kurilovich (yellow1452)	1					3	3
59	Kotova A.K. (_klarhen)	1					2	3
60	Lupin A. (hongweibin)	3					2	2
61	Dem'yanenko (BASIL_VA)	2					2	2
62	Boev V. (SQL_59)	1					2	2
63	Dang (f1zz)	1					2	2
64	Novikov (glebby9800)	1					2	2
65	Malakhov A.V. (JLaKeR)	2					1	2
66	P'yankov (IVAN PI)	2					ban	ban
67	Ilya I.I. (Ilya_123)	2					1	2
68	Maksakov D. (Higgs)	1					1	2
69	Khajrullina L.A. (Kanatokhodets)	1					1	2
70	Chalov (auxiliarytrinket)	1					1	2
71	Klenin (kostyllSQL)	1					1	2
72	B A.O. (Alex_Bryus)	1					1	2
73	Khlebnikov K.B. (Yazheek)	1					1	2
74	Kon'kov G. (garrykonkov)	1					1	2
75	Vnukov D. (Astronaut_Vnuk)	1					1	2
76	123 1.1. (wakkkizasi)	4					1	1
77	Fetisov I.V. (waden)	2					1	1
78	Pupkin V.V. (shyneven)	2					1	1
79	Uroshin (Aleksey Ur)	1					1	1
80	Ursaki M.A. (Maloii)	1					1	1
81	set S. (sergeyb1)	1					1	1
82	Mir (Nadyami)	1					1	1
83	Aleksanyan D.A. (dezs)	1					1	1
84	Kamarouski A. (akamarouski)	3
85	Odegov A.I. (KovroLitik)	3
86	Zasorina A.A. (ledz)	3
87	Nasimov (Bo Dibilder)	3
88	Koptel'tsev V. (selber)	2
89	Vinogradova S.M. (Tigra1)	2
90	Kraskova O. (kraskovaolga)	2
91	Smith (tibacityblues)	2
92	Zachem (aleshkaaa)	2
93	Reznichuk K.I. (Deancage)	2
94	Korolev R.V. (zouker)	2
95	Komov S.M. (Komov S. M.)	2					ban	ban
96	L'vov O.V. (McLion)	2
97	greg .V. (frastber)	2
98	Odnokurtsev (AlFochino)	2
99	mimi A.E. (sasisa564)	2
100	Sushilina P.A. (LinaMakcimova77)	2					ban	ban
101	Deulin I.A. (Greyhan)	2
102	Chernov D. (Diamond69)	2					ban	ban
103	Khamraeva S.R. (Bri15)	2					ban	ban
104	d A.S. (pvaaa)	2
105	Bube (ValBube)	2
106	Bychkovskij G.A. (GeBy)	1
107	Krasovskij E.A. (pegoopik)	1
108	tiesen (ptiesen)	1
109	Voronova A. (Aleksabdra)	1
110	Aryshev (beg_ki)	1
111	domblador (renu first)	1
112	Solyakova (Anna Solyakova)	1
113	Lyustochkin K.S. (lamp2502)	1					ban	ban
114	Dragosh V. (DragoshV)	1
115	Kamenev M. (mihail_kmp)	1
116	Bas (BasKarabas)	1
117	Yurchenko A. (y.aleksandr89)	1
118	Ivanov I.I. (vlad91)	1
119	Ivanov V.P. (Asters)	1
120	Nevazhno (ruslan43)	1
121	Ivanov (SilverLight)	1
122	Zuraev (Zuraev)	1
123	Palasukhin D.S. (Nitrinos)	1
124	Kholkovskij E.A. (Ennn)	1
125	Naumenko K.A. (deantrap)	1					ban	ban
126	Sk (Sknv)	1					ban	ban
127	Popov K. (Patras)	1
128	Panfilov I.A. (BakaLover)	1
129	Kryukova E.A. (elenelis)	1
130	Kashaev S.V. (sergudok)	1
131	Boyarov A.A. (boyasha)	1
132	Bajgil'dina R. (Renatka)	1
133	Startseva M.A. (Mariia_St)	1
134	Gerasimov D.G. (Khmurin'yo)	1					ban	ban
135	Sarkis'yan G. (gennadi_s)	1
136	Kartsev (Andkartsev)	1
137	Matvej M.B. (kuhvbnffdfsdsd)	1
138	Glazkov (Zanegin)	1
139	Zimirev V.S. (zivs)	1
140	R. (Wra1th)	1
141	Pavel P.P. (familka)	1
142	Popov A. (Amniculus)	1
143	Tolmachev (Liverbird_1982)	1
144	Maksimova O.A. (Olgaa708987)	1
145	test T.T. (yoyoja344)	1
146	Lysykh V.K. (Usilitel')	1
147	Zhiryakov V.V. (vladvladzero)	1
148	Shagabieva A.A. (Delyasha)	1
149	M (DanilM2304)	1
150	Ryabov D.E. (Daniil_Ryabov)	1					ban	ban
151	Zakharova M. (BulbBulb)	1
152	Voroshkevich T.S. (Timokhaaaa)	1					ban	ban
153	maglich E.N. (bel'ba)	1
154	Avagyan N.A. (Avagyan_Narek_Arsenovic_4)	1					ban	ban
155	Drobinina A.I. (Anastasia Shmeleva)	1
156	Belyak (TheTester)	1
157	Trukhan (Godlex)	1
158	Kuskova I.A. (kva-kva)	1
159	Shishkin A.E. (Pietro1918)	1
160	Malikova D.A. (darmal)	1
161	reck R.R. (reckxbt)	1
162	Kostyleva (naggets.nas)	1
163	Korshunov N.A. (Lixodey228)	1
164	Starovojtov (kasida)	1
165	Kolesov S.B. (Kolesov Stepan)	1
166	le S.E. (sedrus)	1
167	Shorokhova (Say Cheese)	1
168	Batman A.A. (Anderlecht)	1
169	Khurmatova A.I. (Alsu100)	1
170	Ali T.A. (Atsi)	1
171	Ivanov I.I. (Bdfy_0123)	1
172	soi S. (soion1)	1
173	Kharinson (Veial1)	1
174	Golbers A. (SQL_account_0001152)	1
175	Badmaeva (databina)	1
176	vitenberg R.R. (sonoroom)	1
177	Andreeva Yu.S. (andreevayul)	1
178	Derevyanko A. (AlexeyDerr)	1
179	Chimikina F.Ch. (CH_F_2002)	1
180	Unregistered	28

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References