Last week rating | SQL Exercises

September 03, 06:48 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: 15155

No	surname	n_sel	sel_all	sel_scores	dml_scores	scores	rating	last_visit
1	Tsybin A.V. (magicdragon)	4	36	10	7	17	1633	02 Sep 2026
2	Skokov B.S. (leks$$)	4	47	9	0	9	1112	02 Sep 2026
3	Vinogradova S.M. (Tigra1)	2	154	7	0	7	148	31 Aug 2026
4	Shibaev (saah)	3	88	7	0	7	560	02 Sep 2026
5	Powkh N.M. (I_AiLL_I)	4	4	5	10	15	5398	02 Sep 2026
6	Gusev A.O. (NowOrNever)	1	68	3	0	3	425	30 Aug 2026
7	Berezovskaya O. (Rocksolana)	1	2	2	0	2	8352	02 Sep 2026
8	Bezmolitvennaya Yu.V. (yillixx)	1	1	1	0	1	15154	02 Sep 2026
9	sar G. (konick_gs)	0		0	7	7	6851	31 Aug 2026
10	Serova M.M. (ssss.mmmm)	0		0	6	6		27 Aug 2026
11	Kulikov A.Yu. (Ondrata)	0		0	6	6		29 Aug 2026
12	Chapleeva A.M. (chapllucky)	0		0	3	3		28 Aug 2026
13	Kaverzin M.A. (Amnesia172)	0	3	0	2	2	3292	01 Sep 2026
14	Bochkova (PunDora)	0		0	2	2	10986	01 Sep 2026
15	Shishkova E. (norta)	0		0	1	1	15155	01 Sep 2026
16	Jj (Jj111)	0		0	1	1		27 Aug 2026

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References