Re: [PHP] Random SELECT SQL list
Hi Larry,Paul,Zoltán Thanks for your messages, adding ORDER BY RAND () worked just fine :) Eduardo Larry Garfield [EMAIL PROTECTED] escribió en el mensaje news:[EMAIL PROTECTED] On Wednesday 16 May 2007, Eduardo Vizcarra wrote: Hi I would like to know if a SELECT SQL query list of records can be unsorted. SELECT statement retrieves a list of records from a certain table starting from record # 1 till record #N and when publishing the records, this is how it is presented, in a sequential way, is there any way to not present them in a sequential way ? e.g. if a user accesses a web page then he will see record #3 and then #7 and so on, another user accesses the same web page and he might see record #8 and then record#2. etc any experience on how to do this ? This is really an SQL question, but it's quite easy. Assuming MySQL: $result = mysql_query(SELECT * FROM foo WHERE bar='baz' ORDER BY RAND()); // Do stuff here. -- Larry Garfield AIM: LOLG42 [EMAIL PROTECTED] ICQ: 6817012 If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of every one, and the receiver cannot dispossess himself of it. -- Thomas Jefferson -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random SELECT SQL list
2007. 05. 17, csütörtök keltezéssel 00.45-kor Larry Garfield ezt írta: On Wednesday 16 May 2007, Eduardo Vizcarra wrote: Hi I would like to know if a SELECT SQL query list of records can be unsorted. SELECT statement retrieves a list of records from a certain table starting from record # 1 till record #N and when publishing the records, this is how it is presented, in a sequential way, is there any way to not present them in a sequential way ? e.g. if a user accesses a web page then he will see record #3 and then #7 and so on, another user accesses the same web page and he might see record #8 and then record#2. etc any experience on how to do this ? This is really an SQL question, but it's quite easy. Assuming MySQL: $result = mysql_query(SELECT * FROM foo WHERE bar='baz' ORDER BY RAND()); // Do stuff here. ORDER BY RAND can be very unefficient on large tables. some useful info here: http://www.titov.net/2005/09/21/do-not-use-order-by-rand-or-how-to-get-random-rows-from-table/ greets Zoltán Németh -- Larry GarfieldAIM: LOLG42 [EMAIL PROTECTED] ICQ: 6817012 If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of every one, and the receiver cannot dispossess himself of it. -- Thomas Jefferson -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Random SELECT SQL list
Hi I would like to know if a SELECT SQL query list of records can be unsorted. SELECT statement retrieves a list of records from a certain table starting from record # 1 till record #N and when publishing the records, this is how it is presented, in a sequential way, is there any way to not present them in a sequential way ? e.g. if a user accesses a web page then he will see record #3 and then #7 and so on, another user accesses the same web page and he might see record #8 and then record#2. etc any experience on how to do this ? Regards Eduardo -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random SELECT SQL list
At 5/16/2007 09:40 PM, Eduardo Vizcarra wrote: I would like to know if a SELECT SQL query list of records can be unsorted. SELECT statement retrieves a list of records from a certain table starting from record # 1 till record #N and when publishing the records, this is how it is presented, in a sequential way, is there any way to not present them in a sequential way ? e.g. if a user accesses a web page then he will see record #3 and then #7 and so on, another user accesses the same web page and he might see record #8 and then record#2. etc Found on this page: http://dev.mysql.com/doc/refman/5.1/en/select.html Posted by Boris Aranovich on June 9 2004 2:33pm I am using this way to select random row or rows: SELECT * [or any needed fileds], idx*0+RAND() as rnd_id FROM tablename ORDER BY rnd_id LIMIT 1 [or the number of rows] Meanwhile, I didn't stumble in any problems with this usage. I picked this method in some forum, don't remember when, where or by who was it introduced :) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Random SELECT SQL list
On Wednesday 16 May 2007, Eduardo Vizcarra wrote: Hi I would like to know if a SELECT SQL query list of records can be unsorted. SELECT statement retrieves a list of records from a certain table starting from record # 1 till record #N and when publishing the records, this is how it is presented, in a sequential way, is there any way to not present them in a sequential way ? e.g. if a user accesses a web page then he will see record #3 and then #7 and so on, another user accesses the same web page and he might see record #8 and then record#2. etc any experience on how to do this ? This is really an SQL question, but it's quite easy. Assuming MySQL: $result = mysql_query(SELECT * FROM foo WHERE bar='baz' ORDER BY RAND()); // Do stuff here. -- Larry Garfield AIM: LOLG42 [EMAIL PROTECTED] ICQ: 6817012 If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of every one, and the receiver cannot dispossess himself of it. -- Thomas Jefferson -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
