Last week rating | SQL Exercises

April 23, 08:30 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

  • SELECT (learning stage)
  • SELECT (learning stage,
      choosing DBMS)
  • SELECT (rating stages)
  • DML 
  • Transact-SQL tests
  • Modelling of data
  • Visual modelling (painting)
  • Exercises voting

Forums

  • Learning stage
  • Rating stages
  • Favorites
  • Search

Certification

  • Certified professionals
  • Statistics
  • Statistics over regions (map)
  • Confirm certificate

HELP

Query optimization

For employers

Support SQL-EX.RU

ремонт посудомоечных машин на дому
xlservice.ru
клапан перекидной см. тут
dmn-rus.com

Last-week results

n_sel - number of select exercises solved this week;
sel_all - total number of solved select exercises;
sel_scores - sum of points on select exercises earned this week;
dml_scores - sum of points on dml exercises earned this week;
scores - total sum of points earned this week;

Involved in rating: 11916

No	surname	n_sel	sel_all	sel_scores	dml_scores	scores	rating	last_visit
1	Yakovlev M.V. (MikhailYakovlev535)	6	51	12	0	12	1160	22 Apr 2018
2	Vyazovetskov A.S. (alex_v)	3	238	10	0	10	10	20 Apr 2018
3	Novikov A. (Proofgg)	8	8	10	0	10	5175	19 Apr 2018
4	Boronin M.V. (makc-nv)	6	21	9	0	9	1766	23 Apr 2018
5	Zalunin D. (dim_zal)	6	10	9	0	9	4676	23 Apr 2018
6	Sajgakova A.V. (Ametist)	4	26	8	0	8	1477	22 Apr 2018
7	Ariam (Ariam)	6	55	7	4	11	713	22 Apr 2018
8	Pantileenko D. (iriswind1)	3	82	7	0	7	378	20 Apr 2018
9	Kostomarov A.V. (al29)	2	246	6	0	6	1	19 Apr 2018
10	Agirre Kordova (Cordova)	4	4	5	24	29	3087	20 Apr 2018
11	Zajtsev V.S. (Sleeping)	2	209	4	0	4	19	19 Apr 2018
12	Vasilevskaya E.A. (kattiks)	1	88	4	0	4	257	22 Apr 2018
13	Buldenkov D.A. (eXeQuThor)	1	93	3	0	3	263	22 Apr 2018
14	Berestneva N.A. (Wolfna)	2	79	3	0	3	453	20 Apr 2018
15	G N.E. (gana)	1	68	3	0	3	808	23 Apr 2018
16	KsNV (KsNV_)	2	51	3	0	3	895	22 Apr 2018
17	Khomutova (anzhela6660)	1	23	3	0	3	2372	16 Apr 2018
18	Efanov D. (ScriptHard)	2	4	3	0	3	6689	17 Apr 2018
19	Tychkov A. (Justew)	1	1	2	11	13	5172	22 Apr 2018
20	Usik S.V. (cheekysveta95)	1	5	2	4	6	2976	17 Apr 2018
21	L'vov S.V. (simba_81)	1	84	2	0	2	340	19 Apr 2018
22	>Yastrebova S.V. (WhiteGoshawk)	1	39	2	0	2	1081	23 Apr 2018
23	Sorokin D.Yu. (cth)	1	16	2	0	2	2107	20 Apr 2018
24	Kozlova D. (daryadm)	2	4	2	0	2	3344	22 Apr 2018
25	Konnov R.O. (RomJR)	1	8	2	0	2	4941	22 Apr 2018
26	Omarov T.T. (Rovno15simvolov)	1	5	2	0	2	5958	19 Apr 2018
27	Latyntsev N.G. (aks_nsk)	1	180	1	0	1	48	23 Apr 2018
28	Alexenko V. (vova.alexenko)	1	52	1	0	1	948	17 Apr 2018
29	Yurin D.I. (Diman9425)	1	21	1	0	1	3456	22 Apr 2018
30	Kay A. (kay1992)	1	16	1	0	1	3841	22 Apr 2018
31	Stepanov A.I. (juanas)	1	5	1	0	1	4763	17 Apr 2018
32	Gladyshev A. (aagladyshev1)	0	9	0	26	26	2566	20 Apr 2018
33	Zemlyanukhin (NIKITA123321)	0		0	25	25		20 Apr 2018
34	Surname (svdr23)	0		0	23	23		20 Apr 2018
35	Safonova D.A. (diana11111997)	0		0	19	19	7687	21 Apr 2018
36	Koretskij M.S. (Koretskij Mikhail)	0		0	18	18		20 Apr 2018
37	Murenin I. (tighxe)	0		0	17	17		20 Apr 2018
38	ugrekhelidze D. (davidugre95)	0		0	16	16		16 Apr 2018
39	Milyutin (nattan3310)	0		0	11	11		17 Apr 2018
40	Gerastovsaya A.S. (ann1206)	0		0	11	11		17 Apr 2018
41	Demina E. (SpecialK)	0		0	11	11		17 Apr 2018
42	Dronov M. (Dron98)	0		0	10	10		19 Apr 2018
43	Geralt O.R. (Medovik23)	0		0	9	9	5433	23 Apr 2018
44	Zakharov A.M. (MasterAndrey)	0		0	9	9	5434	22 Apr 2018
45	Dmitrenko (corred)	0		0	9	9	5435	23 Apr 2018
46	Makovsky M. (makovsky)	0		0	9	9	5436	22 Apr 2018
47	Vapnyarchuk I.I. (Vapnyarchuk)	0		0	9	9		17 Apr 2018
48	Mas (rrrazor)	0		0	9	9		19 Apr 2018
49	Stolbov Y. (Stolbov)	0		0	8	8		19 Apr 2018
50	Polivoda K. (Polivoda2395aaaaaa)	0		0	8	8		20 Apr 2018
51	Yakovlev G.I. (German1993)	0		0	8	8		20 Apr 2018
52	Sergeenko S.V. (Sergik_2018)	0		0	7	7	8568	20 Apr 2018
53	Ershov S. (senpai13)	0		0	7	7		16 Apr 2018
54	shelevey A.V. (And rey)	0		0	6	6		16 Apr 2018
55	nas (shpakovska)	0		0	6	6		17 Apr 2018
56	Akhrorov B. (Beka_96)	0		0	5	5		19 Apr 2018
57	Koft (Benka)	0		0	5	5		20 Apr 2018
58	Dejnak V.S. (Valdis2312)	0		0	5	5		19 Apr 2018
59	ole (hejsa)	0		0	5	5		20 Apr 2018
60	Burdenko Ya. (Bsl)	0		0	4	4	7407	22 Apr 2018
61	hushovatyy V. (el_fantazma)	0		0	4	4		17 Apr 2018
62	K E. (1_Myshka)	0		0	4	4		17 Apr 2018
63	Sharov (Ablazzing10)	0		0	4	4		17 Apr 2018
64	Tarambula V.S. (tarambulavs)	0		0	4	4		22 Apr 2018
65	Rotsker S.R. (vet_gop/33)	0		0	4	4		21 Apr 2018
66	Snegovoj (Snegovoy_Aleks)	0		0	4	4		22 Apr 2018
67	Korzhenevich O.S. (Olya Korzhenevich)	0		0	4	4		20 Apr 2018
68	Muratov J. (jek2033)	0		0	4	4		19 Apr 2018
69	Zubіlevich A.V. (antonzubb)	0		0	4	4		19 Apr 2018
70	Kostenko A. (AntonK.)	0		0	4	4		20 Apr 2018
71	Tsukrenko (sugarmenyn)	0		0	4	4		19 Apr 2018
72	Litkovskij A.S. (Krakozyabl)	0		0	4	4		19 Apr 2018
73	Pusev D.V. (Pusev_Denis)	0	99	0	3	3	234	23 Apr 2018
74	Zhej Z.S. (zhej)	0		0	3	3	7688	22 Apr 2018
75	Sapelko A.P. (Shlema)	0		0	3	3	8571	23 Apr 2018
76	Chez (asya121)	0		0	3	3		17 Apr 2018
77	V (Varador)	0		0	3	3		16 Apr 2018
78	Khatum N.I. (Niki44)	0		0	3	3		20 Apr 2018
79	Evgenij P.V. (Zhecond)	0		0	3	3		22 Apr 2018
80	Krajnik (AndrewKraynik)	0		0	3	3		19 Apr 2018
81	Azaryonok T.N. (tato4ka91)	0		0	3	3		20 Apr 2018
82	Holodynska A. (Anet_Holodok)	0		0	3	3		16 Apr 2018
83	Skripnik M.V. (MariaSkr)	0		0	3	3		17 Apr 2018
84	Nikita (Pakimon)	0		0	3	3		22 Apr 2018
85	Utina (Lana Banana)	0		0	3	3		17 Apr 2018
86	Goleva E.N. (Rissolenka)	0		0	3	3		20 Apr 2018
87	naxagi (odaxelangia)	0		0	2	2	8569	22 Apr 2018
88	F (kesh.ka)	0		0	2	2	8570	23 Apr 2018
89	popok D.V. (dima00707)	0		0	2	2		20 Apr 2018
90	Elajv Yu. (Alivezm)	0		0	2	2		17 Apr 2018
91	Filimonov D.Yu. (dane_fell)	0		0	2	2		18 Apr 2018
92	Mes' A.B. (Artem_SkillUp)	0		0	2	2		16 Apr 2018
93	Kіsіl' N.O. (natakiss)	0		0	2	2		17 Apr 2018
94	Stolbov (Stolboff)	0		0	2	2		19 Apr 2018
95	Klimov K.K. (zigmund1)	0		0	2	2		20 Apr 2018
96	Bandura M.S. (Maikl_B)	0		0	2	2		20 Apr 2018
97	Dragun V.V. (Vlada321)	0		0	2	2		19 Apr 2018
98	Soroko S.I. (Soroko)	0		0	2	2		20 Apr 2018
99	Denia (ohhlux)	0		0	2	2		20 Apr 2018
100	Krasovskij E.A. (pegoopik)	0	263	0	1	1	2	20 Apr 2018
101	Chernov D.V. (Kursist)	0	188	0	1	1	35	23 Apr 2018
102	Shkarednyj I.N. (Gosha)	0	168	0	1	1	49	23 Apr 2018
103	Nersesov (TIpu3paK)	0		0	1	1	11915	22 Apr 2018
104	Rozhkov D.S. (student_solver_sql)	0		0	1	1	11916	22 Apr 2018
105	Bespalov D.N. (BDN)	0		0	1	1		20 Apr 2018
106	gugaev K. (Kirill Gugaev)	0		0	1	1		20 Apr 2018
107	Arkhiptseva M. (arhipceva.m)	0		0	1	1		21 Apr 2018
108	Boyko (Dmitrixxx)	0		0	1	1		19 Apr 2018
109	Vladislavov V.V. (Ambrosy0)	0		0	1	1		19 Apr 2018

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References