Last week rating | SQL Exercises

June 17, 22:31 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

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: 15116

No	surname	n_sel	sel_all	sel_scores	dml_scores	scores	rating	last_visit
1	Pupkin V.I. (feehch)	11	11	16	0	16	5282	11 Jun 2026
2	>Shibaev (saah)	10	32	14	0	14	2021	17 Jun 2026
3	Safronov P.A. (Paulus73)	4	138	13	0	13	139	17 Jun 2026
4	Vinogradova S.M. (Tigra1)	3	135	8	0	8	182	14 Jun 2026
5	Makarov I.A. (_Bkmz_)	1	180	5	0	5	49	17 Jun 2026
6	P I.*. (IrinaPetr)	3	81	5	0	5	608	17 Jun 2026
7	Skokov B.S. (leks$$)	2	35	5	0	5	1409	16 Jun 2026
8	Odnokurtsev (AlFochino)	1	122	4	0	4	256	16 Jun 2026
9	>Gorbunov M.S. (gms)	3	53	3	0	3	1054	17 Jun 2026
10	Gitinomagomedov (gmansur88)	2	49	3	0	3	1082	17 Jun 2026
11	Freitas J.P. (Juli_@@)	1	1	1	1	2	10783	15 Jun 2026
12	Smirnov S. (hr)	1	25	1	0	1	1436	11 Jun 2026
13	Yakupova (Kamilla Yakupova)	1	5	1	0	1	7477	15 Jun 2026
14	Starkov A.V. (anstarko)	1	1	1	0	1	15114	16 Jun 2026
15	Gornikov A.P. (AG3)	1	1	1	0	1	15116	15 Jun 2026
16	Lymar' K.K. (Kirill L (TsI))	0		0	22	22	4614	16 Jun 2026
17	Yakovlev (Dez46)	0		0	13	13	5651	17 Jun 2026
18	Bykov (EvgenyAstro)	0		0	11	11	6047	17 Jun 2026
19	JJ J.J. (Legalize Nuclear Bombs)	0		0	10	10		15 Jun 2026
20	Vdovin S. (Rujan)	0	143	0	8	8	141	17 Jun 2026
21	D (IlyaDukh)	0		0	8	8	6600	17 Jun 2026
22	Kavaliou (miki_koval)	0		0	6	6	7141	16 Jun 2026
23	Vakulko A.V. (VAlexandrV)	0		0	6	6	10963	17 Jun 2026
24	Tokar' I.V. (Iriska25)	0		0	4	4	10962	14 Jun 2026
25	Nope (ScreamingSeagull)	0		0	3	3	9427	17 Jun 2026
26	Shlyapugin D.V. (shlyapugind)	0		0	3	3	9428	16 Jun 2026
27	ss A.S. (SashaSS)	0		0	2	2		17 Jun 2026
28	Rassokha (stanis1avr)	0		0	1	1		16 Jun 2026

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References