Today's statistics at "SQL Exercises"

August 23, 23:06 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	ss A.S. (SashaSS)	1			1	2
2	Astrelina D. (smiling_corgi)	2					13	22
3	Terekhov A. (terekhovart)	3					11	21
4	Pathak A. (ananya221107)	2					ban	ban
5	shende P.A. (pranav_07)	1					14	19
6	Kolbaskin I.A. (kolbasskin)	2					15	18
7	Oktamov N.A. (Nurdaulet99)	1					13	18
8	Murlyk M.M. (Myau Murych)	1					10	15
9	Levin Yu.A. (pdestroyer)	2					8	13
10	ankudinov (arseniyank)	1					9	12
11	Alibekov K. (forever_buumble)	3					9	11
12	Antoshkin A.A. (Artur_2107)	2					8	10
13	Klishin (F P)	2					8	9
14	Zhur V. (mrvaroz)	1					5	9
15	A (JohnnyData)	1					5	9
16	Popandopulo (popandopulop)	1					7	8
17	tell M.M. (tellmemerci)	2					6	8
18	SIbagatullina (solnyshko199)	2					5	8
19	Shagalov O.L. (TTC)	1					4	8
20	Popova A.O. (AnnaPo12)	1					4	8
21	Kuz'mich E.K. (VG88800098999)	2					6	7
22	Serova M.M. (ssss.mmmm)	1					6	7
23	Stepanova K.D. (Ksenuashka)	1					6	7
24	Pilot (Daniil_Pilot)	1					6	7
25	Blednyj I. (lololoshka_495)	2					5	7
26	Gritskikh M.V. (DeadlyFe)	2					5	7
27	Reva S.I. (s.reva)	1					4	7
28	Surname (nothydra134)	1					5	6
29	Shmelyova V. (Nika_19)	1					4	6
30	Kustova V. (emilygrossman)	1					4	6
31	Kulikov A.Yu. (Ondrata)	1					3	6
32	Sokolkov M.A. (mxzchm)	2					5	5
33	Khafizov L.Z. (Lenarkhaf)	1					5	5
34	sss (bobeflampy)	1					5	5
35	Bezuglenko (artem_enotenko)	2					4	5
36	rodrigues R. (rayray1307)	1					4	5
37	Kameneva (kristachak)	1					3	5
38	RozhdyonnyjPrikalyvat'sya (DOLBAEB13)	1					4	4
39	Ivanov V. (ivanowictor)	1					4	4
40	Torkunov M. (killofeva)	2					2	4
41	pushkarev V.S. (tt3dg)	2					2	4
42	Ibo K. (Kemchik)	1					2	4
43	Obukhov A.V. (Alex_71)	1					2	3
44	Karelina M.A. (Mariya Karelina)	1					2	3
45	Saukin U. (novichok_PA)	1					2	3
46	lopin (koplopip)	1					2	3
47	Pupkin (ChK2026)	2					2	2
48	Mel'nichenko I. (Ira343)	3					1	2
49	Bryukhanov A.N. (Antonus)	2					1	2
50	Rubanov M.I. (GodNaoborot2)	2					1	2
51	Kazantsev V.D. (kentiko_0)	2					ban	ban
52	Houston H.H. (Houston12345)	2					1	2
53	Leschenko (Verochka_21)	1					1	2
54	1 (Archontos)	1					1	2
55	Kurakin (billir)	1					1	2
56	vvvv (vvvvd)	1					1	2
57	Budyukin L.D. (StanceInfaimm)	1					1	2
58	Murin I. (Ilya__M)	1					1	2
59	Shure V. (VladimirShure)	2					1	1
60	T (TA_IIII)	2					ban	ban
61	Trofimov (Trofimf)	2					1	1
62	Popov N.N. (Chumahod)	2					1	1
63	Sidorenko (Yulich)	2					1	1
64	Konogorskij L.E. (konogorsky Leo)	1					1	1
65	Shevtsov K. (KonstantinXL)	1					1	1
66	Isaev (andnothingheart)	1					1	1
67	Kosatkin P. (PaulTronix)	1					1	1
68	Melaveetha (Melavitich)	1					1	1
69	Shved A. (Vonn_SL)	1					1	1
70	Ivanov A.I. (dispeo)	1					1	1
71	Sharnin N.S. (loymedings)	1					1	1
72	Sarkis'yan G. (gennadi_s)	3
73	Pavel P.P. (familka)	3
74	Zakharov G. (4atlanin)	2
75	Sviridov A.A. (rosnidatvovni)	2
76	uktamov B.M. (behas1)	2
77	Lomov (ciklop1)	2
78	Usanova D.A. (Usanova Dar'ya)	2
79	Drozdova V.E. (VladislavaD)	2
80	Markova M.P. (Marina_Uchitel)	2
81	Zalyaletdinov R.R. (rinatramz)	1					ban	ban
82	V (Tenyva)	1
83	Shibaev (saah)	1
84	Korostelev (sirflaunder)	1
85	Koptel'tsev V. (selber)	1
86	Shkurat I.I. (messisql)	1
87	Kumar M. (waifo)	1
88	Artemenkov P. (39525D)	1
89	Rozhdesvenskaya O. (OleLukole)	1
90	Egorovskaya V.B. (Afalina)	1
91	Mashkovskij S.V. (kilimangaro)	1
92	Kanev A.I. (Alex1996)	1
93	Andreev M. (Grrreen)	1
94	Guseinov A. (Ali_G)	1
95	Iagupets D. (Drlionardo)	1
96	Rychina (ugi-tugi)	1
97	Voevodina (MariaYuto)	1
98	Savenko (olalasavenko)	1
99	Petrov (Goododo)	1
100	Crux (Crux-ss)	1
101	Smirnov A.S. (parazorro)	1
102	Platonov A. (Golden-Times)	1
103	Brajnin S.O. (brusha)	1
104	Maklenkova V. (veruvere)	1
105	sar G. (konick_gs)	1
106	Nenashev D.A. (danilka12321)	1
107	Bykov (sky-shore)	1
108	Rodin (uoloki)	1
109	nov (energizer-_-)	1					ban	ban
110	Kazazyan (Anjelikka)	1
111	Kartashev D.A. (Q4rdas)	1
112	Shajkhitdinov (Selim2)	1
113	Murav'eva A.A. (Nstsi.mur)	1
114	R. (Wra1th)	1
115	Korolev R.V. (zouker)	1
116	Korneev A.V. (Aleks-97)	1
117	Sad A.S. (ssaqerke)	1
118	Korolkovs (fkorolkov2)	1
119	Ocean (Ariel Tiramisu)	1
120	Skibin V.V. (SQL_vvs)	1
121	test T.T. (yoyoja344)	1
122	Kucherenko A.S. (Nyusha87)	1
123	Lysykh V.K. (Usilitel')	1
124	Shuvalov (Spectre1915)	1
125	Novikov A.N. (Takuan)	1
126	Fayzullayev (Lutfullo)	1					ban	ban
127	Shajkhullina L. (Luiza_shayn)	1
128	Teterin R.V. (virast)	1
129	Ikoeva T.T. (cathar)	1
130	Mikaya (Gio9248)	1
131	Serov A.E. (ario25)	1
132	Kukanov D. (kukish_)	1
133	Grezneva N. (celestica)	1
134	Lipin E. (Junior2222)	1
135	Syrtseva V.A. (syrko)	1
136	Wil F.-. (Wilfrech)	1
137	Shuminov E. (EzraSh)	1
138	Yurova (AherCh)	1
139	humaan S. (strangehumaan)	1
140	Gorijchuk E.A. (EgorQ2ZA)	1					ban	ban
141	Borisov D.R. (Dmitry.Bo)	1
142	Bratsykhina T.A. (tatavia25)	1
143	Ageeva (Ush1m1ya)	1
144	yyyy N. (Nikkkikikik)	1
145	Kudryavtsev V.O. (VladKudr)	1
146	Vershinina A. (KI RA)	1
147	Filimonov I.V. (Limo1111)	1
148	lamer (-lamer-)	1
149	Verbits'kij D.M. (xantHAHA)	1
150	Sheludyakova (ShellSight)	1
151	Yakushenko-Antropova A.M. (ParanomalJane)	1
152	detush (selin1917)	1
153	Khomushku N.Kh. (homushku_n301)	1
154	leushin (sheriff123)	1
155	Khayaleeva D.R. (poplavushka)	1
156	Ponurov A. (ppurumm)	1
157	Sanin A.M. (alekseyichev)	1
158	Unregistered	39

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References