Today's statistics at "SQL Exercises"

August 18, 19:27 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	Li F. (Lili_France)	3			3	3	15	18
2	Bochkova (PunDora)	4			3	3	5	8
3	Povol (looki123)	1			3	3	3	3
4	Waghare A.S. (Aatharva)	1					15	25
5	Sheshko V. (Tester_Vlad)	1					11	22
6	Maksimov (SQLlearninginging)	1					15	20
7	Schetinina N.A. (Natalya.Schetinina)	2					14	20
8	Tkachuk K. (amalamaalabama)	1					14	20
9	M (adilyam)	3					15	18
10	Ivanov (voidbase)	2					15	18
11	Chumachenko N. (Nadia_Chumachenko)	1					15	18
12	Kopytko E. (EGK)	1					15	18
13	yyyy N. (Nikkkikikik)	3					13	18
14	Golydbina K.A. (kk021004)	1					12	16
15	Veshnyakova (DanaVesh55)	2					9	14
16	Zabavnikova U.A. (ulyazabavnikova)	1					8	14
17	Radionov (fraster17)	2					10	13
18	LastName (edtfrhterhwrg)	1					10	13
19	Serbul T. (horirisasimi)	2					8	13
20	Kravtsova M.I. (k_marina89)	1					7	13
21	_ _._. (rrl)	1					9	12
22	Tarasova M.A. (milana88)	2					8	12
23	Pokrovskij A.A. (Sanyok05)	1					8	11
24	Akimova E.N. (Katrin_A91)	2					7	11
25	Bawane H.U. (Harsh_18)	1					ban	ban
26	Belov E. (EugeneBelov)	2					6	10
27	Galanov V.Y. (RedRitter)	2					7	9
28	Nazlukhanova M.D. (more_v_vanne)	1					7	9
29	tikiriki1 (tikiriki)	1					7	9
30	Sergeev V. (32b)	1					5	8
31	Savchenko V.P. (Vladislav11111)	1					5	8
32	penkova (sonya3)	1					4	8
33	Klyavlin V. (aurq)	1					4	8
34	Fai A. (anilazaa)	2					6	7
35	Tverdokhlebov D.S. (Danil_Bread)	2					6	7
36	Chapleeva A.M. (chapllucky)	1					6	7
37	Abilkhan Y. (AYERS)	1					6	7
38	kofuku (Kofuku)	1					5	7
39	Kupriyanova P.A. (@poluchku)	4					4	7
40	Borisov D.R. (Dmitry.Bo)	2					4	7
41	KhOZYaINOVA I.N. (InKh)	1					4	7
42	Krivoshein D.A. (Hayz311)	2					6	6
43	Afanas'eva E.V. (cactysss)	1					6	6
44	Zhopkin (Vanek_destroyer)	1					4	6
45	Ibragimov (RobBot1337)	1					4	6
46	Kazakov E.V. (Barada)	1					4	6
47	Kabanov Z.V. (ZahaUdzumaha)	1					5	5
48	Kudryavtsev V.O. (VladKudr)	1					5	5
49	Vishnyevskiy (pvish)	1					4	5
50	Babushki S. (gnomz)	2					3	5
51	Bocharnikova A.A. (Lliona)	1					3	5
52	Shirisha K. (Potti Shirisha)	3					4	4
53	CHARNIAK P. (bitoma)	1					4	4
54	Sokolov (Sokol_Evgen)	2					3	4
55	Nikulenko P.A. (Flower1001)	1					3	4
56	Muratov D.A. (Enovostuck)	4					2	4
57	Kulikov A.Yu. (Ondrata)	2					2	4
58	Lapina (as_lapina)	2					2	4
59	cedar (cedar_stone)	2					2	4
60	Frolov K.A. (Murderface_)	1					2	4
61	Kitaev K.I. (Kostas1234)	1					2	4
62	Murin I. (Ilya__M)	1					2	4
63	Lyakh (LinaL_)	1					2	4
64	Kuznetsova S.N. (Womanidze)	2					3	3
65	Scherbachenko I. (Shcheri)	1					3	3
66	Sergeev K. (sergeevkst9898)	1					3	3
67	Me (ketchunez)	1					3	3
68	SecondName (enisey_n)	3					ban	ban
69	New R.G. (newLogin)	2					2	3
70	salmanov (onlu)	1					2	3
71	Terent'eva A. (nemy)	1					2	3
72	Altashin S.V. (burrito)	1					1	3
73	akimat A.Z. (akimatovskiii)	1					2	2
74	Gornostaev V.V. (VadimGorn)	1					2	2
75	Zubkov D. (Dm54)	1					2	2
76	Berseneva T.M. (Bersa_3785)	1					2	2
77	Ivanova K. (Kseniyalvzh)	1					2	2
78	Semenova (aynaas)	1					2	2
79	Kalinkina M.K. (Kalinka_Ma)	1					2	2
80	Korolev R.V. (zouker)	3					1	2
81	Saidov I. (igor_1993)	2					1	2
82	Gasimov (Beyond9)	2					1	2
83	Budyukin L.D. (StanceInfaimm)	2					1	2
84	Izabakarov G. (Bakha_26)	2					1	2
85	Shishkova E. (norta)	1					1	2
86	Ti (Ost2020)	1					1	2
87	Platonov A. (Golden-Times)	1					1	2
88	Brajnin S.O. (brusha)	1					1	2
89	Sultanayeva (Lowlights)	1					1	2
90	Vakulko A.V. (VAlexandrV)	1					1	2
91	Murat M. (murat_mukhammed)	1					1	2
92	Kurakin (billir)	1					1	2
93	Levin Yu.A. (pdestroyer)	1					1	2
94	Yurievich (yuri.y)	1					1	2
95	Malo A. (meyhom_2)	1					1	2
96	Shevtsov D. (Shevtsov2711)	1					1	2
97	Zhmyshenko (notepu1)	3					1	1
98	Kuznetsov (Serg0Moiseich)	3					1	1
99	Evgen'ev (gek_c)	2					1	1
100	Karnakov M.S. (Maxon4ik20)	2					1	1
101	Nuradinov U. (urasan)	1					1	1
102	Titov (mahaon_1999)	1					1	1
103	Ivanova (nahi1)	1					1	1
104	Krupin M.A. (ma.krupin)	1					1	1
105	a A.A. (rdctfvygbuhjnk)	1					1	1
106	Vanderov S.V. (Lord_Spears)	1					1	1
107	Ivanov I.I. (beshenyjindus)	1					1	1
108	Dev A. (bluefish4you)	1					1	1
109	Stytsyuk N. (natalia19930420)	3
110	keieiuty (keieiuty)	2
111	Koptel'tsev V. (selber)	2
112	Pashkovskaya O.I. (Olesya14)	2
113	Sarkis'yan G. (gennadi_s)	2
114	Tsarev O. (otnzxcvbnm)	2
115	Agaragimov G.S. (Jambve)	2
116	Nakonechnaya V.S. (Zarela)	2
117	Khakimova M.R. (MavjudaHakimova)	2
118	Ponomarev M.P. (MatveyF)	2
119	edmond2 (edmond2)	2
120	Filyaev A.S. (DotorLepre)	2
121	Petrov (Petrov D.V.)	2
122	Botoroeva A.E. (botoroevas)	2
123	Filimonov I.V. (Limo1111)	2
124	Shibaev (saah)	1
125	Krasovskij E.A. (pegoopik)	1
126	Martynov A. (Ryncol)	1
127	Kumar M. (waifo)	1
128	Zhilenkova V.V. (valeria.picard)	1					ban	ban
129	Potapov (poga)	1
130	Belov S.A. (edta_ff)	1
131	Bereznyak M.V. (lucky_shot)	1
132	Kirill (Visard)	1
133	Zhur (Tanets)	1
134	Novikova (Tanitrielle)	1
135	Aleksandrova (Hesai)	1
136	Utrobina A.N. (Asya940711)	1
137	Anait A.A. (pau44o)	1
138	Tsay S. (Sergey Ts.)	1
139	Ponomaryov S.P. (serega_0320)	1
140	Makhotkin S.O. (mborsch)	1
141	Guseinov A. (Ali_G)	1
142	Kirakosyan A.S. (AkaArk777)	1
143	Prudaeva N.A. (Pavlova.nat.an)	1
144	Gennady G.G. (yelp)	1
145	Noskov R.E. (Angelorn)	1
146	Sidorenko I. (SidIvaNik)	1
147	Marin H.R. (robmarin)	1
148	Leschenko (Verochka_21)	1
149	Bondarenko D.B. (Hecvi)	1
150	Konovalov P.D. (pdkonovalov)	1
151	Morunov E.D. (Morun)	1
152	Aleksej A.A. (Rawww)	1
153	Os'kina A. (niurasha)	1
154	Chvikova A.M. (Chvikova)	1
155	Schur A. (Asure)	1
156	Abdullina (yulia_not_yulia)	1
157	Panicheva V.D. (_Vika_)	1
158	gri (snoozer)	1
159	Sultankul Z.A. (zhanara_sultankul)	1
160	Volchenko A. (Fere25)	1
161	Qwerty (TeacherTop9)	1
162	Angirova (dream231)	1
163	Kirdyankin A. (Kirdiankin)	1
164	Sementina O. (Helga_Abenteurer)	1
165	Lysenkov D.I. (Agnostick)	1					ban	ban
166	ss A.S. (SashaSS)	1
167	Skokov B.S. (leks$$)	1
168	Rodin (uoloki)	1
169	Shinkevich V.P. (vova788888888)	1
170	Valerkina (Valer_ochka)	1
171	Darkkholm V. (DarkHolm)	1
172	Sharonov (Hiqoo)	1					ban	ban
173	Kakayateberaznitsa (neivanere)	1
174	Balakin V. (G_Xian_00313)	1
175	Namazov M.A. (AsLimbo)	1
176	R. (Wra1th)	1
177	Tal Y.F. (YTal)	1
178	Darichev S.I. (Slavik1337)	1
179	Kalashnikova A.K. (anzhelikakalashnikova)	1
180	Sharonov P.A. (PiroReshala)	1					ban	ban
181	Khalektsij K.A. (kirya666)	1
182	Zakharova M.S. (mzakharovaaa)	1
183	Lysykh V.K. (Usilitel')	1
184	Akameeva S.V. (SVA1)	1
185	Velichenkov D.A. (Galotane)	1					ban	ban
186	Ibragimov (Rinatr)	1
187	Gendina M.M. (rita_gendina)	1
188	Boboeva (Kiba)	1
189	Martem'yanova E.G. (heks)	1
190	Kanunnikov P.V. (Inoj777)	1
191	Vasilevskij (OrDinaD)	1
192	Leonov D.V. (xannnnn)	1
193	Goldobin E.G. (prm259)	1
194	Ibo K. (Kemchik)	1
195	Daya (DarkRaike)	1
196	Ivanov I.I. (tatsoul)	1
197	Dunin S. (sqlsem)	1
198	Pushkarev S. (PSV_n)	1
199	Tat'yana Ch. (LukiTat)	1
200	Salamakhin I. (SQLInz)	1
201	Kazantsev V.D. (kentiko_0)	1					ban	ban
202	Matushkina (AlenaM15)	1
203	Ingole S.D. (Keshav-Ingole)	1
204	Burtonov A.V. (tak to)	1					ban	ban
205	Veselov D.M. (Dimitriy Veselov)	1
206	Tynybekova G.R. (Gulaisha)	1
207	Akopyan K.G. (Karlen)	1
208	Korionova P.D. (Karina_fox_777)	1
209	Saryglar (Daryma)	1
210	Murat I. (Inzhu_murat13)	1
211	Ageeva (Ush1m1ya)	1
212	Lcdma (LCDM138)	1
213	Alieva (vp228)	1
214	Nichiporchuk M.I. (Grethem-m)	1
215	Radj M. (Madream626020)	1
216	Elin G.Yu. (GlebElin)	1
217	Kryukov N. (GuzmanJr)	1
218	Dut O.A. (olga_dm_d)	1
219	karpovec I.A. (bkarag1)	1
220	Chizhevskij (AntiButer)	1
221	Familiya I. (drygoi kto-to)	1
222	Istomin M.F. (MichaelIst)	1
223	Filippova T.A. (XnsCKL)	1
224	Naumova S. (sofiyaroslyakova)	1
225	Skripkin S.A. (Eemerald)	1
226	Waynekenru (Waynekenru1)	1
227	Vershinina A. (KI RA)	1
228	Barbar (narmalno)	1
229	Feschenko A.A. (artem_fresh)	1
230	Navitskas A. (Sana451)	1
231	Unregistered	43

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References