I've been meaning to follow up on this post. Can either Peter or someone expand and provide an example of "get all information in a single query..."
Thank you , Stuart --- Peter Lovatt <[EMAIL PROTECTED]> wrote: > Hi > > What I do is to try and get all information in a > single query and then use > php from there on. I go as far as building arrays > from result sets and > manipulating the data using php. > > Can't guarantee this is best practice but I have > built big sites with big > visitor numbers this way and they run OK :) > > HTH > > Peter > > > > > -----Original Message----- > > From: Brent Baisley [mailto:[EMAIL PROTECTED] > > Sent: 08 September 2004 19:01 > > To: [EMAIL PROTECTED] > > Cc: [EMAIL PROTECTED] > > Subject: Re: What's Faster? MySQL Queries or PHP > Loops? > > > > > > I would try not to query MySQL on each iteration > of the loop. While a > > dozen or so queries may not make a noticeable > difference, hundreds or > > thousands may. It's not a scalable technique, > whether you need to scale > > it or not. Even if it's only 100 iterations, what > if you have 10 people > > accessing the database at once? That's now 1,000 > queries. > > You should try to have MySQL organize the data for > you. Since you are > > using Dreamweaver to generate your code, your SQL > knowledge may not be > > up to it. But there are a number of query options. > Perhaps if you > > posted your table structure and the result you are > looking for, the > > list could help with a query. > > > > Even though everything is on one machine, you > still needed to do lots > > memory transfer from MySQL to Apache/PHP. The > difference may not be > > noticeable, but I would always try to design for > scalability. MySQL is > > designed to handle data so I would let it. > > > > On Sep 8, 2004, at 11:28 AM, Robb Kerr wrote: > > > > > Here's the scenario... > > > > > > First, my HTTP Server (Apache), PHP Server and > MySQL Server are on the > > > same > > > machine - an Apple Xserve. > > > > > > Second, I've got a page with a long repeat > region reflecting a > > > recordset > > > queried out of a MySQL table. The region also > displays information > > > obtained > > > from fields in a related table. > > > > > > Third, I use Dreamweaver to generate my MySQL > recordsets and repeat > > > regions. > > > > > > Here's the question... > > > > > > I can either A) in the header or my page, > generate a recordset of all > > > of > > > the records in the related table and then loop > through the recordset > > > creating an array of the fields I need and then > later pull from it in > > > the > > > repeat region... or B) take the six lines of > code Dreamweaver > > > generates to > > > create a recordset and move them into the repeat > region itself. In > > > other > > > words, I can create a recordset of all of the > records in the related > > > table, > > > loop through it generating a PHP array and pull > from this array later > > > OR I > > > can query the database every time through the > loop while creating the > > > repeat region. > > > > > > Since I haven't freed the table until the bottom > of the page and > > > because my > > > MySQL Sever and PHP Server reside on the same > machine, will I really > > > notice > > > a measurable difference in speed? If my MySQL > Server were a different > > > machine, I'm sure that there would be a > noticable difference because > > > all of > > > the queries would be across a network (possibly > the internet) and > > > traffic > > > would become a factor. > > > > > > Just wondering what other people have noticed. > BTW, I've also posted > > > this > > > on the PHP board. > > > > > > Thanx > > > -- > > > Robb Kerr > > > Digital IGUANA > > > Helping Digital Artists Achieve their Dreams > > > > ---------------------------------------------------- > > > http://www.digitaliguana.com > > > http://www.cancerreallysucks.org > > > > > > -- > > > MySQL General Mailing List > > > For list archives: http://lists.mysql.com/mysql > > > To unsubscribe: > > > > http://lists.mysql.com/[EMAIL PROTECTED] > > > > > > > > -- > > Brent Baisley > > Systems Architect > > Landover Associates, Inc. > > Search & Advisory Services for Advanced Technology > Environments > > p: 212.759.6400/800.759.0577 > > > > > > -- > > MySQL General Mailing List > > For list archives: http://lists.mysql.com/mysql > > To unsubscribe: > http://lists.mysql.com/[EMAIL PROTECTED] > > > > > > -- > MySQL General Mailing List > For list archives: http://lists.mysql.com/mysql > To unsubscribe: > http://lists.mysql.com/[EMAIL PROTECTED] > > -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
