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Old 09-23-2006, 03:09 AM
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Default Trouble using LEFTJOIN when table 2 contains 60,000+ records!

I am having BIG problems with pageload times when executing the following query:
PHP Code:
$queryvenues $db->query_read("
    SELECT " 
TABLE_PREFIX "erc_venue.*, " TABLE_PREFIX "dma.* 
    FROM " 
TABLE_PREFIX "erc_venue
    LEFT JOIN " 
TABLE_PREFIX "dma ON " TABLE_PREFIX "dma.zipcode = " TABLE_PREFIX "erc_venue.venuezipcode
    ORDER BY " 
TABLE_PREFIX "erc_venue.venuetitle
"
); 
Just to give you all an idea of my db, the erc_venue table contains more than 1,000 records and the dma table contains more than 60,000 records...

FYI, the function i have created to display the results is as follows:
PHP Code:
function print_venue_row($venue
{
        if (
$venue['venuecountry'] = 'USA' AND $venue['venuezipcode'] != 0)
        { 
            
$venuedma $venue['dmaname_clean'] . " (" $venue['rank'] . ")";
        } 
        else 
        { 
            
$venuedma ''
        } 

    
print_cells_row(array(
        
"<a href=\"erc_editvenue.php?venueid=".$venue['venueid']."\">".$venue['venuetitle']."</a>",
        
$venue['venuecitystate'],
                
$venuedma,
        
$venue['venueid'],
        
"<a href=\"".$venue['venueurl']."\" target=\"_blank\"><img src=\"../images/buttons/ip.gif\" alt=\"".$venue['venueurl']."\" border=\"0\" /></a>",
        
"<input type=\"radio\" name=\"idforaction\" value=\"".$venue['venueid']."\">"
    
));

When executing this query, it can take as long as 122 seconds to load the page! Is there any way I could re-write the query (or the function print_venue_row) more efficiently to help load the page more quickly?

Thanks in advance for your assistance
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