Today's statistics at "SQL Exercises"

February 14, 13:52 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	Kremen' Yu.A. (Test007)	1			1	1
2	Schekotova V.A. (Leee77)	1					ban	ban
3	Dobrynin A.M. (craz_arl)	1					14	27
4	Mukhametzhan M.A. (Miras2181)	2					15	25
5	Targyn M.A. (M4N_T4)	1					15	25
6	Talgat A.B. (Altux)	1					15	25
7	Marat A.N. (Abla1)	1					15	24
8	fdsfsdfdsfd (fjksodjfosidjiro)	1					15	23
9	mels A.M. (kkharvey)	1					15	23
10	Yudin E.V. (egork@)	1					15	22
11	Kamza A. (drgibjosh)	1					13	22
12	Nailova K.R. (kamok)	1					15	21
13	Olpanbay A.A. (Assyk232)	1					ban	ban
14	Zubenko M.P. (dmitrius98)	1					15	18
15	Grinenko I.S. (grenka9)	1					15	18
16	Nurdilda M.Y. (mairusha)	2					14	17
17	LOG N.E. (LOGKFK)	3					13	16
18	Norton (hrraaggh_hrraaggh)	1					12	16
19	Musl A. (hammep)	1					ban	ban
20	Dolgopolov Ya.M. (ANNAZBOL)	1					10	13
21	Shebnev (si.shebnev)	1					9	12
22	Lyubimova A.V. (nastyana)	1					9	12
23	Shirokorad K.D. (ksuzi)	2					7	12
24	Grigor'ev (AFxAster)	2					7	11
25	Erbatyr A.E. (aigerim1406)	1					ban	ban
26	Zheltov V.Yu. (xz_pochemy)	1					5	10
27	dfsfssf (prprprprp)	1					5	9
28	Luzin (Igoryasha)	4					7	8
29	Laptev V.A. (Arnol'd Shvartsnegger)	1					7	8
30	telagisov D.D. (SAVER454)	2					4	8
31	Chumakov A.A. (Superkent)	1					4	8
32	Golovyoshkin A.E. (r3dik)	1					7	7
33	Kasimov I.M. (Il'fat)	1					7	7
34	Katya (mccat)	1					6	7
35	Gadzhiev (nu3on)	1					5	7
36	Secret (Toshakartoshajp)	1					6	6
37	Nedoborenko K.K. (K_Nedoborenko_64B)	2					5	6
38	Bystrov (6blCTPOmiha0)	1					4	6
39	Shironina A.A. (anya shironina)	1					3	6
40	Trushnikov M.N. (chajan)	1					3	6
41	nazar'eva A.R. (albina1234.)	1					3	6
42	k K.K. (onix13)	1					5	5
43	Kononov A.A. (Rlotik)	1					5	5
44	Sirota A.A. (arem8107)	1					5	5
45	Sergo (An_Swer)	1					5	5
46	Birmanuly A. (alikhannn)	1					5	5
47	Zholdasov A.S. (asyl10)	1					5	5
48	Zyryanov S. (semzyr)	1					5	5
49	Sal'nikova A.A. (Selena123)	1					4	5
50	Yerlanuly A. (Moon077)	1					ban	ban
51	Seitzhan N.M. (aiyym)	2					4	4
52	Dudov (PinhasD)	1					4	4
53	Badalyan D.S. (Lilinad)	1					4	4
54	Naavgust (august0321)	1					4	4
55	Shirokov M.A. (Dr.Mikhail)	1					4	4
56	Efremova (eda_shhha)	1					4	4
57	Rinat D.R. (Didar1)	1					4	4
58	Beisen A.Zh. (akoss_06)	1					4	4
59	Panova V.R. (Vikusik6422)	2					2	4
60	a B.C. (tapo4ekk)	1					2	4
61	Bityutskij S.A. (HaNsOo)	1					ban	ban
62	Kirill (P0dp1vass)	1					2	4
63	Kuz'minykh E. (tomkiller)	1					2	3
64	Treskin D.M. (zubastix2)	1					2	3
65	Afanevich E. (Ketra)	1					2	2
66	Bydantsev A.V. (Nova10)	1					2	2
67	Timshin N.E. (extaazza)	3					1	2
68	Petrov N.V. (Nick21)	2					1	2
69	Efimov V. (YOLMMi)	2					1	2
70	Tikhonov (behav10ur1)	2					ban	ban
71	pavlov I.A. (ilushkinnn)	2					1	2
72	Moneskin I.N. (fovente)	2					1	2
73	Bilovus O.V. (ponichka)	2					1	2
74	Matveev A.A. (matinhno)	2					1	2
75	Kadochnikov (Kadochnikov Andrei)	1					1	2
76	Pletnikov K.V. (OLEG_228)	1					1	2
77	Bueva A.V. (yeeen)	1					1	2
78	First_name N.L. (logt24)	1					1	2
79	Kashin A.D. (Alkashh)	1					1	2
80	cubera V.V. (vasyan111)	1					1	2
81	Chursin S. (ser_chur)	1					1	2
82	Dridor'eva N.A. (Nat_commit)	1					1	2
83	Krapivina L. (epywabi)	1					1	2
84	Mukhamedzhanov R.M. (Balmain)	1					1	2
85	Medvedev K.A. (kirill-medvedev)	1					1	2
86	Amirova D.O. (dar1)	1					1	2
87	Pankova V.S. (ustinia)	1					1	2
88	Olejnikov A.A. (lefes)	1					1	1
89	Botina D. (daria2025)	1					1	1
90	Pupkіn O.V. (Sasha25161)	1					1	1
91	Sagyntay (Orynkul)	3
92	Slobodchikov I.A. (chajnyjpaket4)	3					ban	ban
93	Sergeeva E. (aterra)	2
94	Konyavskij A. (Kohsa)	2
95	Zholdigaliev (S1ko)	2					ban	ban
96	Piskarev Ya. (piskarev-yaa)	2
97	Grechishnikova L.M. (Lidiya0512)	2
98	Kalmanov R.N. (RamazanK)	2
99	Shakiyev (Orangutan)	2
100	Yarovaya M.V. (meleema)	2
101	Krasovskij E.A. (pegoopik)	1
102	Koptel'tsev V. (selber)	1
103	Sigankov V.I. (vasilyvanc)	1
104	Sal'nikov N.V. (snv_ma)	1					ban	ban
105	Vavya A.V. (mgtu-ccccc)	1
106	Nikulin N.V. (nikylin)	1
107	Semakova E. (lukovka)	1
108	Bykov A.N. (Aleh126)	1
109	Ol'shanetskij S. (SLAV2019)	1
110	Prorochuk A. (Kyraga)	1
111	Tsys' (Egor806)	1
112	Shamaeva M.E. (shamaeva)	1
113	Kruglov V.E. (krauzer)	1
114	Kostyuk A.I. (Drant)	1
115	Zakutnyaya (Lyocha)	1
116	Romanov R.S. (Romanov_Roman)	1
117	Sachivko (Aries115)	1
118	Alexus (avg(person))	1
119	Khachatryan (aramzik)	1
120	Chebarkladze T.S. (swcalerian)	1
121	Karpushenko A.P. (fenris06)	1
122	Plinto (plinto97)	1
123	Krivoshein D.A. (Hayz311)	1
124	s (malinari)	1
125	Khamuev (Tabooret)	1
126	Ivanov (userTest1)	1
127	Borodulina A.N. (ruannik)	1
128	Oreshkov R. (ghost0211)	1
129	Steblyankin A. (SauzaSauza)	1
130	Shamshin R.A. (4oruxa)	1
131	Bes D.E. (Work0)	1
132	R. (Wra1th)	1
133	Kolenko S.S. (Ned_)	1
134	Klimovitskaya (klimsofya123)	1
135	Khrustaleva (kultuh)	1
136	Abubakarov T.R. (DoubleT)	1
137	Lysykh V.K. (Usilitel')	1
138	Timofeev A.T. (BegginerTex)	1
139	Oginov D.M. (Wereteno)	1
140	Ryzhakov E.S. (threadripper)	1
141	Sirota I. (krummi)	1
142	Yushina A.N. (Student63)	1
143	Volkov (AnatolyVolokov)	1
144	Strebkov G.M. (vesna208)	1
145	Sorokin I. (alestan)	1
146	Nasirova (Taira)	1
147	qq Q.Q. (stormxgod)	1
148	Mikhalyov E.S. (evgensiii)	1
149	Kolpaschikova (ruflufy)	1
150	zhumazhan A.Zh. (akiiii)	1					ban	ban
151	Adil (eclassic32)	1
152	Olpanbay A.A. (Assylzhan232)	1
153	Bagdasaryan A.A. (Armaand)	1					ban	ban
154	Vysotskij (Bulochka_Bulochka)	1
155	Amangeldiuly A. (CDF)	1					ban	ban
156	Sotnikova M.Yu. (Mariya Sotnikova)	1
157	Selezenev K.A. (Kirill00001)	1
158	Kibalina I. (inna.kibalina)	1
159	Can (svetonik)	1
160	Novikova E.V. (Velvv)	1
161	ttttt (sqlchelik)	1
162	Osipov N.A. (Guest_1)	1
163	Tsarev A. (Aleksej1234)	1
164	Degtyarev (Maxon_Shans)	1
165	Magdalits E. (Magdalits)	1
166	Turobov N.A. (Nikita134)	1
167	Mer S. (skdo)	1
168	Baiev A.A. (Alien112)	1
169	WorldWater (5War5Fire5)	1
170	Pribytkova M.S. (mariasyrnik)	1
171	Shvets (ASchwetz)	1
172	Khavich A.Kh. (Akiowww)	1
173	Unregistered	25

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References