Today's statistics at "SQL Exercises"

August 02, 23:30 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	O (janeoosql)	3	2	28		2
2	Vinogradova S.M. (Tigra1)	1	1	130		2
3	Kerimov K. (Kerim Kerimov)	2					14	20
4	Feofanov A.S. (feofan01)	1					14	20
5	Potapov S.O. (QgenWat)	1					12	17
6	Vdovin T.E. (Timafej)	1					9	16
7	Astrelina D. (smiling_corgi)	1					11	15
8	Murin I. (Ilya__M)	2					11	14
9	Zaluzhskij V.S. (vszsky)	2					8	14
10	Komissarov E. (Lalafa1)	2					7	14
11	Bnd V. (bondch)	1					10	13
12	bovykin V.K. (yaget)	1					10	13
13	Chernenko (Schwartz_max)	2					7	11
14	Savenko (olalasavenko)	1					6	11
15	salmanov (onlu)	1					6	10
16	Sadovaya K.A. (k1x07)	3					8	9
17	Kozyr (Slim4510)	5					7	9
18	Sharafutdinova E.Yu. (ktshrfvt)	1					7	9
19	girase C. (ketan@123)	2					5	9
20	Shafl (Tears14)	1					7	8
21	Antonov (SalamPopolam)	2					4	8
22	A (Red__cat)	2					7	7
23	Khadatkar A. (Aryan_K)	1					6	7
24	Sal'khova A.A. (Nastya1823)	1					6	7
25	Baldinini (Divine_Divinity)	2					4	7
26	Strilenko (Liamorte)	1					4	7
27	Kol'tsova E.S. (elizavetakoltsova)	1					5	6
28	Vlasov (kirill181992)	1					4	6
29	Budyukin L.D. (StanceInfaimm)	2					5	5
30	Kolesnikova K. (Ksyu_sha)	1					5	5
31	Lezhin N.M. (MonStricks)	1					5	5
32	Surname (nothydra134)	1					5	5
33	Mavrin A. (desyatbukv)	1					5	5
34	Kuznetsov (GloomyFox123)	1					3	5
35	Zmievskii (Kogan Shuko)	1					3	5
36	Kazantsev V.D. (kentiko_0)	1					3	5
37	Romanov A.A. (andromus)	1					3	5
38	Mazur A.A. (Ondre)	1					2	5
39	vm (AlexanderTGreat)	2					4	4
40	Kurbanov R.K. (Mr_Rakhim)	1					4	4
41	Makhin M.Yu. (Makalei)	1					4	4
42	Altashin S.V. (burrito)	1					2	4
43	drobysheva M.A. (MARYYYYYYYYY)	1					2	4
44	Fatkhiev M.I. (Nxitr)	3					3	3
45	Ryabikina (Allusikk)	2					3	3
46	Polovodov V.A. (valerchikkkk)	1					3	3
47	Ageev (daniljson)	1					3	3
48	Mihaylov P. (plgurenn)	2					2	3
49	Rakov K.A. (Kotestrk)	1					2	3
50	23 (ll23lll)	1					2	3
51	Kozlova A.I. (AlenaKot)	1					2	3
52	Dumilin (eewish)	1					2	2
53	Alex R.R. (AlexRedkn)	1					2	2
54	Vlasov M.V. (Vlaskis)	1					2	2
55	Pudov M.V. (max333)	1					2	2
56	Gavrikova (Gavr09)	1					2	2
57	Amr (Amr132)	3					1	2
58	yehor Y. (beginner0)	2					1	2
59	Filippov D.A. (shketik)	2					1	2
60	Vodolazova A.V. (Vodolla)	1					1	2
61	Kolotovkin A.A. (SilverRaven)	1					1	2
62	Mitrey (_mitrey)	1					1	2
63	Kartavtseva A.S. (Sasha Kartavtseva 94)	1					1	2
64	Platonov A. (Golden-Times)	1					1	2
65	Kameneva (kristachak)	1					1	2
66	Rebovskij (x-lerasim13)	1					1	2
67	Kuznensov A. (kuznec4life)	1					1	2
68	Romanov E. (oxotaenjoyer228)	1					1	2
69	Ivanova (nahi1)	1					1	2
70	Zubkov D. (Dm54)	1					1	2
71	Urakina K. (Ksu774)	1					1	2
72	Folomeev (Cap1568)	1					1	2
73	Mishen'kin (teagod1)	1					1	2
74	Hope (Doemu)	1					1	2
75	kofuku (Kofuku)	1					1	2
76	Igor F. (Vudmam)	3					1	1
77	Zinchuk (Shade940)	1					1	1
78	Ponomarev M.P. (MatveyF)	1					1	1
79	Smirnova A.E. (Aleksa777)	1					1	1
80	Bromberg A. (ariel_bro)	1					1	1
81	Borisov D.R. (Dmitry.Bo)	1					1	1
82	Yatmanov K.V. (druginraw666)	1					1	1
83	Bolbas M.S. (margo_boba)	1					1	1
84	Petrova K.P. (U2665OfEvil)	1					1	1
85	Dukachev I.V. (idukachev)	1					1	1
86	Svinaryov I.V. (kultyapka)	8					ban	ban
87	Krasovskij E.A. (pegoopik)	4
88	Murat M. (murat_mukhammed)	3
89	Kurochkin P.A. (qwrqwr)	2
90	Koptel'tsev V. (selber)	2
91	Bryukhanov A.N. (Antonus)	2
92	Dolgikh A. (dolartQA)	2
93	Lyaschenko S.N. (pimen78)	2
94	Sarkis'yan G. (gennadi_s)	2
95	Kalashnikova A.K. (anzhelikakalashnikova)	2
96	Pushkarev S. (PSV_n)	2
97	Zhelnovach A.V. (Amatiri)	2
98	Khorunzhij E.A. (wuwuqw)	2
99	Volkova E. (elnV11)	2
100	Volkova A.E. (An_Vi)	2
101	Petrov (Steamboat)	1
102	Ivanova (MRX$)	1
103	ivanov (remark)	1
104	Hopkins A.A. (baklazantor)	1
105	Egorovskaya V.B. (Afalina)	1
106	Vestnikov D.A. (letsstudybegin)	1
107	Churauglov A.G. (anvarch)	1
108	Alexeev (DarkDev)	1
109	Chebodaev M.I. (Seal PuP)	1
110	DO R.M. (danchikPi)	1
111	Pipch (Pipch)	1
112	Bardina Yu.V. (juliabardina)	1
113	Tsybin A.V. (magicdragon)	1
114	Unknown (Nick_nick322)	1
115	Argunov (russs111)	1
116	ss A.S. (SashaSS)	1
117	Rodin (uoloki)	1
118	Zhaksylyk Zh.E. (ZiqZaq)	1					ban	ban
119	van L.2. (lxrvan)	1
120	Manturov I.S. (Nachinayuschij1)	1
121	Toropov I.R. (Il'yaToropov)	1
122	Balakin V. (G_Xian_00313)	1
123	Litvinov E. (3don_II)	1
124	Wilkinson (Thomas_Wilk)	1
125	Odegov A.I. (KovroLitik)	1
126	R. (Wra1th)	1
127	Pavel P.P. (familka)	1
128	Druzhkova Yu. (djulikk)	1
129	Korolev R.V. (zouker)	1
130	Cody (CmdCody)	1
131	bauer (tron350)	1
132	Petrochenkov (Alexexex)	1
133	Ivanova L.P. (bachelor0312)	1
134	Lysykh V.K. (Usilitel')	1
135	Kudriavtseva K. (Wolfyk17)	1
136	Kirillov D. (OCEH6)	1
137	Kotovsky E. (Xukku)	1
138	Ryabov A. (Slavander)	1
139	Sairanbek D. . (sairanbek_darkhan)	1
140	Basov V.A. (vadim_basov)	1
141	Matveev V.A. (Matvej87)	1
142	Kolobin N.S. (gerod0t)	1
143	Samokhina A.A. (Ania Nel)	1
144	Korolev A.A. (Ereticheskij Chajnik)	1
145	Blabla (kentucky)	1
146	Polikarpov K. (kir0206)	1
147	ess (ernyg)	1					ban	ban
148	Kim D. (DkimsonSQL)	1
149	Tsay A. (antoninho)	1
150	Star D. (BobaBiba123)	1
151	Okonnikov D. (DocWins)	1
152	Danilova (flairClaire)	1
153	Khachaturyan S. (Samvelio)	1
154	Bobrovskij V.A. (lantique)	1
155	Eremeev A.S. (andrew@eremeev)	1
156	Fedorchukova D.V. (DariyaFedorchukova)	1
157	Anisimova (marble_plaque)	1
158	Umarova (ChelseaBlue)	1
159	Kim V.V. (Victory13KiVi)	1
160	Sukhanova O. (Laleika)	1
161	rtrtrtrtrtrtrtrtr (plompital)	1
162	Dry T.G. (timoxa2184)	1
163	Pa (5peaks)	1
164	Lyudvik R. (Romi4_85)	1
165	Il'enko O.O. (Lesyaye)	1
166	Arngol'd (Maykent01)	1
167	Kochergin M.A. (Sandavan1)	1
168	Karen M.M. (Karen3)	1
169	SCHOEMAN E.E. (starfishYAJ)	1
170	Oooo (uishuiguis)	1
171	Yuds (glareofluna)	1
172	Trunov (evgeny23)	1
173	Dmitrievtsev S.A. (Anix87)	1
174	Smirnova (2204rsgty)	1
175	Boskhomdzhiev (Ba1r)	1
176	Bedj L. (larissee)	1
177	Unregistered	30

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References