Last week rating | SQL Exercises

August 06, 03:32 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: 15149

No	surname	n_sel	sel_all	sel_scores	dml_scores	scores	rating	last_visit
1	Shibaev (saah)	8	77	13	0	13	817	05 Aug 2026
2	O (janeoosql)	5	29	7	0	7	1453	03 Aug 2026
3	Lyaschenko S.N. (pimen78)	2	120	6	0	6	184	02 Aug 2026
4	Vinogradova S.M. (Tigra1)	3	147	5	0	5	153	02 Aug 2026
5	Vyazovetskov A.S. (alex_v)	1	258	4	0	4	6	03 Aug 2026
6	Skibin V.V. (SQL_vvs)	3	31	4	0	4	1644	04 Aug 2026
7	Schetkin N.A. (Persey_Tunguskovich)	3	3	4	0	4	8184	03 Aug 2026
8	Koptel'tsev V. (selber)	1	231	2	0	2	19	05 Aug 2026
9	Skokov B.S. (leks$$)	1	38	2	0	2	1300	05 Aug 2026
10	Muthukrishnan A. (Agal13)	1	13	2	0	2	5145	04 Aug 2026
11	Buk (sqlfighter00)	2	2	2	0	2	10880	04 Aug 2026
12	Sarkis'yan G. (gennadi_s)	1	221	1	0	1	15	05 Aug 2026
13	Williams B. (BW)	1	207	1	0	1	35	04 Aug 2026
14	Luzin (Igoryasha)	1	1	1	0	1	15122	01 Aug 2026
15	Nevskij D. (SkipOne)	1	1	1	0	1	15145	01 Aug 2026
16	Yakovleva D. (Dashusi)	1	1	1	0	1	15147	03 Aug 2026
17	Sal'khova A.A. (Nastya1823)	0		0	9	9	6468	03 Aug 2026
18	Bespalov (proWorker)	0		0	9	9	6469	05 Aug 2026
19	safronov (GarikS33)	0		0	7	7	6849	05 Aug 2026
20	Moiseenko S.I. (mois_)	0	6	0	4	4	2411	05 Aug 2026
21	ptc P.P. (ptc)	0		0	4	4	8526	05 Aug 2026
22	bovykin V.K. (yaget)	0		0	3	3	9442	04 Aug 2026
23	Geist A. (Avgeist)	0		0	3	3	9443	05 Aug 2026
24	Silenkova D.S. (silenok)	0		0	3	3		30 Jul 2026
25	Savenko (olalasavenko)	0		0	3	3		04 Aug 2026
26	Sidorenko (Junior_Explorer)	0		0	2	2	10983	05 Aug 2026
27	Volkonenkov S.S. (volkonenkow88)	0		0	2	2	10984	05 Aug 2026
28	Zhigalov (MZh16)	0		0	1	1	15146	03 Aug 2026
29	Smirnov A.S. (ton186)	0		0	1	1	15148	04 Aug 2026
30	Volkova D.F. (Di_kosm63)	0		0	1	1	15149	05 Aug 2026
31	Bodrov S.S. (Sergejlock)	0		0	1	1		01 Aug 2026
32	Anisimova (marble_plaque)	0		0	1	1		02 Aug 2026
33	Ryatina E.P. (evmake)	0		0	1	1		30 Jul 2026

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References