SQL exercises

January 19, 09:55 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
  • Visual simulation (painting)
  • Exercises voting (SELECT)
  • Exercises voting (DML)

Forums

  • Learning stage
  • Rating stages
  • Favorites
  • Search
  • Blogs

Certification

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

HELP

Query optimization

For employers

Support SQL-EX.RU

То рено дастер
Все характеристики Рено Дастера, результаты тест драйва и цены на авто
reno-max.ru
Компьютерная помощь онлайн бесплатно
Бесплатная фэнтезийная онлайн-игра. Адреса магазинов.
liveexpert.ru
семинары по экологии
ipkspb.ru

Top 100 results achieved on 10 latest exercises

(21DML, 25DML, 27DML, 43DML, 48DML, 50DML, 51DML, 52DML, 55DML, 236)

No	person	exs	score	minutes	last_ex
1	Chernov D.V. (Kursist)¹	10/10(0)	18	186	dml 52 (2022-01-15)
2	Koptel'tsev V. (selber)³⁰	10/10(6)	18	311	dml 52 (2022-01-16)
3	Varenikov D.M. (Dmitriy Varenikov)¹⁸	9/10(0)	16	667	dml 51 (2022-01-10)
4	Kreslavskij O.M. (Arcan)⁴	9/10(0)	16	703	dml 51 (2022-01-09)
5	Filipas I.M. (Axocopan)²⁰⁸	8/10(0)	12	42	dml 52 (2022-01-16)
6	Komarov A.N. (Shveda Saulya)⁶⁷	8/10(0)	12	54	dml 52 (2022-01-18)
7	Shkarednyj I.N. (Gosha)³⁴	8/10(0)	12	3422	dml 52 (2022-01-16)
8	Latyntsev N.G. (aks_nsk)⁵⁰	7/10(0)	10	393	dml 52 (2022-01-16)
9	Lazareva E. (lea_22)²⁹⁵	6/10(0)	8	3535	dml 51 (2022-01-19)
10	Kurochkin P.A. (qwrqwr)¹⁰	6/10(0)	7	1782	dml 50 (2022-01-03)
11	Sopulyak (takoysebeproger)⁵⁷⁹	3/10(0)	3	26	dml 27 (2022-01-17)
12	Petrov Y. (YuriPetrov)³⁵	3/10(0)	3	166	dml 27 (2022-01-19)
13	Novozhilov A. (BertokMo)⁵⁷¹	2/10(0)	2	246	dml 25 (2022-01-18)
14	Veselov A.N. (almw)³⁹⁴	2/10(0)	2	494	dml 25 (2022-01-18)
15	Bezhaev A.Yu. (Baser)⁷	1/10(1)	1		sel 236 (2021-07-24)
16	Rylov A.V. (LexaR2D2)⁴³⁰	1/10(0)	1	7	dml 21 (2022-01-10)
17	Mirsanov D. (Morningside)⁵⁸³	1/10(0)	1	13	dml 21 (2022-01-14)
18	gls (gls52)²¹⁰	1/10(0)	1	15	dml 21 (2022-01-04)
19	bitsadze K.R. (furie)²⁴⁵	1/10(0)	1	15	dml 21 (2022-01-03)
20	Boyarskij V.A. (ChronoMorzh)³⁷⁶	1/10(0)	1	16	dml 21 (2022-01-01)
21	Frantsuzova Zh. (Parizhanka)⁴⁷⁵	1/10(0)	1	38	dml 21 (2022-01-02)
22	Savin A.Yu. (mirovingin)²⁴⁴	1/10(0)	1	40	dml 21 (2022-01-11)
23	Vinogradova S.M. (Tigra1)²⁰³	1/10(0)	1	41	dml 21 (2022-01-07)
24	Karasyova N.V. (vlksm)⁹	1/10(0)	1	120	sel 236 (2021-07-29)
25	Sigankov V.I. (vasilyvanc)³¹	1/10(0)	1	127	sel 236 (2021-08-14)
26	Kostyushko Yu.V. (kostushko)³³⁰	1/10(0)	1	162	dml 21 (2022-01-10)
27	V (Tenyva)²²⁹	1/10(0)	1	7176	dml 21 (2022-01-09)

Home
Week news

Certification

SQL exercises

Forums

Ratings

HELP

Performance

Profile
References