Strict Standards: Redefining already defined constructor for class wpdb in /blog/wp-includes/wp-db.php on line 49

Deprecated: Assigning the return value of new by reference is deprecated in /blog/wp-includes/cache.php on line 35

Strict Standards: Redefining already defined constructor for class WP_Object_Cache in /blog/wp-includes/cache.php on line 400

Strict Standards: Declaration of Walker_Page::start_lvl() should be compatible with Walker::start_lvl($output) in /blog/wp-includes/classes.php on line 534

Strict Standards: Declaration of Walker_Page::end_lvl() should be compatible with Walker::end_lvl($output) in /blog/wp-includes/classes.php on line 534

Strict Standards: Declaration of Walker_Page::start_el() should be compatible with Walker::start_el($output) in /blog/wp-includes/classes.php on line 534

Strict Standards: Declaration of Walker_Page::end_el() should be compatible with Walker::end_el($output) in /blog/wp-includes/classes.php on line 534

Strict Standards: Declaration of Walker_PageDropdown::start_el() should be compatible with Walker::start_el($output) in /blog/wp-includes/classes.php on line 553

Strict Standards: Declaration of Walker_Category::start_lvl() should be compatible with Walker::start_lvl($output) in /blog/wp-includes/classes.php on line 649

Strict Standards: Declaration of Walker_Category::end_lvl() should be compatible with Walker::end_lvl($output) in /blog/wp-includes/classes.php on line 649

Strict Standards: Declaration of Walker_Category::start_el() should be compatible with Walker::start_el($output) in /blog/wp-includes/classes.php on line 649

Strict Standards: Declaration of Walker_Category::end_el() should be compatible with Walker::end_el($output) in /blog/wp-includes/classes.php on line 649

Strict Standards: Declaration of Walker_CategoryDropdown::start_el() should be compatible with Walker::start_el($output) in /blog/wp-includes/classes.php on line 674

Deprecated: Assigning the return value of new by reference is deprecated in /blog/wp-includes/query.php on line 15

Deprecated: Assigning the return value of new by reference is deprecated in /blog/wp-includes/theme.php on line 505

Strict Standards: Non-static method Advanced_Permalinks::get() should not be called statically in /blog/wp-content/plugins/advanced-permalinks/advanced-permalinks.php on line 825

Strict Standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method GoogleSitemapGeneratorLoader::Enable() should not be called statically in /blog/wp-includes/plugin.php on line 123

Warning: call_user_func_array() expects parameter 2 to be array, null given in /blog/wp-includes/plugin.php on line 123
[MYSQL] Jak pobrać z bazy danych losowe rekordy? » Porady MySQL » egrafik.pl
BAZA WIEDZY
Grafika Webmaster
Aktualności Porady dla Webmastera
Porady CSS Porady HTML Porady MySQL Porady PHP Porady Smarty Pozycjonowanie
Kursy Dokumentacje Skrypty PHP Skrypty JAVA
Windows Hardware Software Download Książki Projekty domów Katalog firm, stron Reklama
KURSY
Bazy danych w PHP
Kurs AdvancedAJAX
Kurs ASP
Kurs ASP.NET
Kurs C++
Kurs CSS
Kurs HTML
Kurs HTML drugi
Kurs JavaScript
Kurs MySQL
Kurs PHP
Kurs RSS
Kurs XHTML
Obiekty DOM
MANUALE
CSS1 - W3C
DOM - w budowie
PHP 2005
PHP 2006
Wyrażenia regularne
SHOUTBOX
STAT
Online: 29 | UU: 384

Strict Standards: Resource ID#250 used as offset, casting to integer (250) in /forum2/db/mysql4.php on line 223

Strict Standards: Resource ID#250 used as offset, casting to integer (250) in /forum2/db/mysql4.php on line 224
[MYSQL] Jak pobrać z bazy danych losowe rekordy?
Porady MySQL | 5 maj 2008 | Wizyt: 111794

Strict Standards: Only variables should be assigned by reference in /blog/wp-includes/post.php on line 114

Strict Standards: Only variables should be assigned by reference in /blog/wp-includes/post.php on line 114

Strict Standards: Only variables should be assigned by reference in /blog/wp-includes/post.php on line 114

Strict Standards: Only variables should be assigned by reference in /blog/wp-includes/post.php on line 114

Strict Standards: Only variables should be assigned by reference in /blog/wp-includes/post.php on line 114

Strict Standards: Only variables should be assigned by reference in /blog/wp-includes/post.php on line 114

Deprecated: Function eregi() is deprecated in /blog/wp-content/plugins/tpbc.php on line 96

Aby posortować rekordy z bazy danych w sposób losowy należy użyć bardzo prostego sposobu, a mianowicie wykorzystać wbudowaną w język MySql funkcję RAND().

Przykład:

Kod: mysql

SELECT * FROM przykladowa_tabela ORDER BY RAND() LIMIT 5

W przedstawionym przykładzie zapytaniem SELECT pobieramy zawartość  tabeli: przykładowa_tabela. Poleceniem ORDER BY RAND() pobieramy rekordy w losowej kolejności, natomiast poleceniem LIMIT określamy, że interesuje nas wylosowanie 5 rekordów. Proste:)

Opracowanie: Adam Suchowski

nowe Porady MySQL » zobacz wszystkie

WordPress database error: [Incorrect file format 'wp_comments']
SELECT * FROM wp_comments WHERE comment_post_ID = '899' AND comment_approved = '1' ORDER BY comment_date desc

Dodaj komentarz









 
| | | |
Copyright © 2006-2013 egrafik.pl | Kontakt | Reklama | Projekty domów
jocker