Today's statistics at "SQL Exercises"

September 27, 16:12 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	Abramova V.A. (wywern)	1			11	13	8	14
2	P I.*. (IrinaPetr)	1	3	-8		4
3	Sigankov V.I. (vasilyvanc)	1	1	53		3
4	Belkov D.A. (belkov_da)	2	2	1		2	3	3
5	Shibaev (saah)	2	1	91		2
6	Levin Yu.A. (pdestroyer)	2			1	2	1	2
7	Plieva A.T. (amelia_pl)	2	1	1		1	5	5
8	Volkova A.E. (An_Vi)	1	1	1		1	1	1
9	Sh S. (junopark1)	2	1	7		1
10	Bryndin P.V. (kolazolfen)	2					15	27
11	kurgina S.M. (sofa0912)	1					12	21
12	Kabanov M.A. (Mikhail0001)	1					ban	ban
13	Tiunov (Remor)	1					15	18
14	Kanzeparova L.I. (LuizaK)	1					12	18
15	Mikhmanov S. (mikhmanov)	2					8	14
16	Pupkin .P. (Tdkey)	3					10	13
17	Samojlenko S.V. (Sergij75)	2					10	13
18	Grebnev D.D. (Oilo123)	1					9	13
19	Karpov I.A. (IvanK.A.rrr)	1					8	11
20	Raisa L. (raiska1718)	1					7	9
21	Karimova A.T. (Alisa2462)	2					ban	ban
22	Belyaev I.A. (Igorman231)	1					5	9
23	Shul'ga A. (Shul'ga A.S,)	2					5	8
24	Moiseenko S. (Mozheviko)	2					5	8
25	Yolokhov (fazzone)	1					5	8
26	Doroshenko S.A. (OrYSlliu)	1					6	7
27	So N. (NanaSeo)	1					6	7
28	Surkov A.A. (Surkov_27)	3					4	7
29	Prishivalko (Korifa)	1					4	7
30	hsdh H.H. (hrcj)	1					4	7
31	Radchenko R.K. (qweqfafsf)	1					6	6
32	Shure V. (VladimirShure)	2					3	6
33	Mal'kov A. (hegwld)	3					5	5
34	Yashina A. (k4litushka)	2					5	5
35	Golovachyov K.E. (?l?????_???D????)	2					5	5
36	Pomylylo V. (Vladislav Pomylylo)	1					5	5
37	droping (dewdapad)	2					3	5
38	Valentin (Dr.Pu)	2					3	5
39	Piryakova E.N. (lisi4ka555)	2					2	4
40	Bel'kin T.N. (TimBel)	2					2	4
41	Peshkov V. (MicroPedalka)	1					2	4
42	Shiryaev A.A. (SmailikX_X)	1					2	4
43	Chern A. (Caxa)	2					3	3
44	Gasheev N.A. (je1mky)	1					2	3
45	Zhuravlev D.A. (HEPHSQL)	1					2	3
46	Bochkova (PunDora)	3					1	3
47	Nikolaev A.N. (AlexeyHeizenberg)	1					ban	ban
48	Arap O. (OXI5)	2					2	2
49	Rud'ko P.A. (Froggkrl)	1					2	2
50	Istomin M.F. (MichaelIst)	1					2	2
51	Ageeva V.V. (vita_llife2)	1					ban	ban
52	Uvaev A.A. (Pompilio)	2					1	2
53	q (zxchaosqqe)	2					1	2
54	Kokorin (Eteroton)	2					1	2
55	Malakhov A.V. (JLaKeR)	1					1	2
56	Korolev (YuK2)	1					1	2
57	Krasnov A.A. (Nutr1k)	1					1	2
58	Startsev (sTaR!nA1402)	1					1	2
59	Shakhova M. (maydaymeow)	1					1	2
60	Shapiro D. (xx_Da_Sha_xx)	1					1	2
61	Ivanov (chuvak_bob)	1					1	2
62	Zuev M.A. (Mikhail Zuev)	1					1	2
63	Kulepov (mi_20)	1					1	2
64	Sibirev F.D. (tak0ysebe)	1					1	2
65	Lebedeva A.R. (Leb_Nastya)	1					1	2
66	Talan E.I. (angelo4ekk)	2					1	1
67	Zykov M.V. (MOKC)	1					1	1
68	angel V. (valolant)	1					1	1
69	Romanov E. (oxotaenjoyer228)	1					1	1
70	Bratsykhina T.A. (tatavia25)	1					1	1
71	Alekseevna G.I. (Irina_08_0199)	1					1	1
72	Faskhutdinov A.A. (sfiler)	1					1	1
73	Glavatskikh A.N. (nnastya)	1					1	1
74	Krasovskij E.A. (pegoopik)	6
75	Sarkis'yan G. (gennadi_s)	4
76	A A.A. (aaa1133)	3
77	Angela (angelikca)	2
78	Vojtenkova E.S. (Katufka22)	2
79	Zheludkov S. (zhsvyach)	2
80	Ukrasin N.A. (NikitaU)	2
81	S (Tinkershock)	2
82	Bezuglenko (artem_enotenko)	2
83	unknown U.U. (unknown2222)	2
84	Bez A.A. (lovellybones)	2
85	vv V.V. (sqlvv)	2
86	qwert (Arvitik)	2
87	Pyatnitsa O.A. (Robin)	1
88	Koptel'tsev V. (selber)	1
89	Ushakov S. (MoyPsevdonim)	1
90	Ushakov A.Y. (ushakov94)	1					ban	ban
91	Dement'ev (GuitMAN)	1
92	Shmigirev A.E. (Shmigirev)	1
93	alex Q.C. (testtest235)	1
94	Dunaev K. (Scrollz)	1
95	Ibragimova S. (SFIA)	1
96	Shamsutdinov A.A. (AmirAlf)	1
97	Mikheev I. (Yota_inGame)	1					ban	ban
98	Vasilenko A.A. (Kog)	1
99	Sejtadzhiev A. (Decata)	1
100	Ryhus Y. (Yevhen_Ry)	1
101	flare O.F. (flarefx)	1
102	Rodin (uoloki)	1
103	Markelov G. (Markelov1991)	1
104	Alex A.A. (alexalex68t)	1					ban	ban
105	Suverov A. (RanesMTS)	1
106	Izhboldin (G3rm4n)	1
107	R. (Wra1th)	1
108	son D.S. (v golove - NULL)	1
109	Lysykh V.K. (Usilitel')	1
110	Abramov V. (Ichigo Kurosaki)	1
111	Noskova D.I. (daho_n)	1
112	Tolk (Kris8008)	1
113	Savin .V. (banana_crepee)	1
114	7shkin S.V. (Slavnik)	1
115	Korotkevich I.A. (somnambula)	1
116	Gnetetskaya P. (Polina_gn)	1
117	Khar'govskaya A. (Arlet)	1
118	Churilov O.E. (HocokTopok)	1
119	Artemev L. (Leonid S.)	1
120	Sain T. (Temujin079)	1
121	Abejsekera E. (Majna)	1
122	Gajnutdinov (AiratG)	1
123	Krutoi (KentKrutoiBro)	1
124	Karimova A.T. (Alisa_k)	1					ban	ban
125	Prokhotskij D.V. (Dmitry000007)	1
126	Nikovskii (vios183)	1
127	Zhmyshenko V.A. (RAZUMIST)	1
128	Dubovaya U.A. (unllksvn)	1
129	Usachev A.A. (etot33)	1
130	Kabanov M.A. (Mikhail42787)	1					ban	ban
131	Vorontsov I.A. (kys_ha)	1
132	Mansf. A.I. (kaoriqwe)	1
133	Michaels S.R. (Hartbreakkid)	1
134	Sardaryan G. (garik_sard)	1
135	Iutinskij D.E. (dimaiuuu)	1
136	Bortsova Yu.B. (Pepel'naya blondinka)	1
137	Sariboy E.A. (Boysari)	1
138	Kolodzinskij L. (Levandovski)	1
139	Zatsepina A. (azatsepina)	1
140	Konstantinova V.A. (nikakushka)	1
141	Tarasov E.V. (Tarasov Elisey)	1
142	Saidova A. (flowpf)	1
143	Ivanova M.S. (Ceceres)	1
144	Dolgikh D.S. (dmitry5SQL)	1
145	Oropaeva K.M. (tua_fatumm)	1
146	Unregistered	20

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References