dogguy2010 Posted July 12, 2013 Share Posted July 12, 2013 Can some one please explain to me why the following code echoes the results twice? <?php //includes: include('connections.php'); include('my_functions.php'); //select last record from coupoons table and set applicable variables $query = mysql_query("SELECT * FROM coupons ORDER BY coupon_id DESC LIMIT 1") or die(mysql_error()); while($rows = mysql_fetch_array($query)) { $coupon_id = $rows['coupon_id']; $barcode = $rows['barcode']; $company_prefix = $rows['company_prefix']; $family_code = $rows['primary_purch_family_code']; echo 'coupon_id ', $coupon_id,'<br>','<br>'; } $query1 = mysql_query("SELECT manufacturers.company_prefix, family_codes.family_code, brands.brand, manufacturers.mfg FROM (manufacturers INNER JOIN brands ON manufacturers.`company_prefix` = brands.`company_prefix`) INNER JOIN family_codes ON brands.`brand_id` = family_codes.`brand_id` WHERE (((manufacturers.company_prefix)=$company_prefix) AND ((family_codes.family_code)=$family_code))"); while ($rows = mysql_fetch_array($query1)) { $mfg = $rows['mfg']; $brand = $rows['brand']; $family_code = $rows['family_code']; echo $mfg,$brand,$family_code,'<br>' ; } ?> The results that I want: Keebler100 Calorie Right Bites390Sunshine100 Calorie Right Bites390 The results I am getting: Keebler100 Calorie Right Bites390Sunshine100 Calorie Right Bites390Keebler100 Calorie Right Bites390Sunshine100 Calorie Right Bites390 I am new to this and am probably missing something very simple, but I can not figure it out. Please help. Link to comment https://forums.phpfreaks.com/topic/280090-seeing-double/ Share on other sites More sharing options...
kicken Posted July 12, 2013 Share Posted July 12, 2013 Probably your SELECT query is returning duplicates. We can't answer why to that without knowing more about each of the tables and the data contained within them. A quick fix might be to just change it from SELECT to SELECT DISTINCT Link to comment https://forums.phpfreaks.com/topic/280090-seeing-double/#findComment-1440415 Share on other sites More sharing options...
web_craftsman Posted July 12, 2013 Share Posted July 12, 2013 Try to change your second INNER JOIN to LEFT JOIN Link to comment https://forums.phpfreaks.com/topic/280090-seeing-double/#findComment-1440417 Share on other sites More sharing options...
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