Last week rating | SQL Exercises

August 20, 21:27 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

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: 15158

No	surname	n_sel	sel_all	sel_scores	dml_scores	scores	rating	last_visit
1	>Shibaev (saah)	6	85	14	0	14	622	20 Aug 2026
2	Vinogradova S.M. (Tigra1)	2	150	5	0	5	151	16 Aug 2026
3	>Chvikova A.M. (Chvikova)	3	14	4	0	4	5150	20 Aug 2026
4	>Komarov A.N. (Shveda Saulya)	1	161	3	0	3	35	20 Aug 2026
5	>Skokov B.S. (leks$$)	1	41	3	0	3	1245	20 Aug 2026
6	Lyaschenko S.N. (pimen78)	1	124	2	0	2	173	14 Aug 2026
7	Tsybin A.V. (magicdragon)	1	30	2	0	2	2362	19 Aug 2026
8	Pokrovskij A.A. (Sanyok05)	1	1	2	0	2	10991	19 Aug 2026
9	jadgfldsgf (jadgfldsgf)	1	1	1	0	1	15154	20 Aug 2026
10	Vershinina A. (KI RA)	1	1	1	0	1	15157	20 Aug 2026
11	Vishnyevskiy (pvish)	0		0	12	12	5838	18 Aug 2026
12	Ermolaev R.G. (CryEngi)	0		0	11	11	6059	20 Aug 2026
13	Bochkova (PunDora)	0		0	6	6	7158	19 Aug 2026
14	Shaju A. (Aditya18)	0		0	4	4	8531	15 Aug 2026
15	Bykov (sky-shore)	0		0	4	4	8532	19 Aug 2026
16	Romanov M. (maksr1703)	0		0	3	3	9448	16 Aug 2026
17	Li F. (Lili_France)	0		0	3	3	9449	20 Aug 2026
18	Povol (looki123)	0		0	3	3	9450	18 Aug 2026
19	Alina (alinakesareva)	0		0	3	3		14 Aug 2026
20	ss A.S. (SashaSS)	0		0	2	2	10990	20 Aug 2026
21	asdas (idalvilter)	0		0	1	1	15155	16 Aug 2026
22	Ku (darwinboy)	0		0	1	1	15156	18 Aug 2026
23	Bobarakhimov B. (Bobur)	0		0	1	1	15158	19 Aug 2026

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References