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I have a query below where I want to search a table to find the top row with 1 or 2 empty positions. But it never returns the correct "referral_id". If I remove the "ref_user_1" and "ref_user_2" conditions from the query, then of course it will return the correct referral id. But those conditions are important for me to have. Is having "AND" and "OR" conditions in the same query against the rules? If so what's the solution for this problem? $find_sponsor = $db->prepare("SELECT * FROM referrals WHERE referred_by = :referred_by AND ref_user_1 = :ref_user_1 OR ref_user_2 = :ref_user_2 ORDER BY referral_id ASC LIMIT 1"); $find_sponsor->bindValue(':referred_by', 2); $find_sponsor->bindValue(':ref_user_1', 0); $find_sponsor->bindValue(':ref_user_2', 0); $find_sponsor->execute(); $result_sponsor = $find_sponsor->fetchAll(PDO::FETCH_ASSOC); if(count($result_sponsor) > 0) { foreach($result_sponsor as $row) { $get_referral_id = $row['referral_id']; $get_ref_1 = $row['ref_user_1']; $get_ref_2 = $row['ref_user_2']; } echo $get_referral_id; // this always returns the wrong referral id } // Table referral_id referred_by ref_user_1 ref_user_2 1 2 20 21 2 2 23 24 3 2 25 0 4 2 0 0 As per my table above, what would my new query look like if I want to retrieve #3 as my referral id?

I have a Mysql table where I store prices of a product. I have the values in "varchar" format because I needed to include "decimals" in the prices(for eg. 15.30) and "int" doesn't allow that. Having done that, when ever I filter the products by prices in Ascending or Descending order, they don't show up in proper order. It seems like the decimal in the prices is messing up the order. Is there a way to fix this so that the php query can filter the prices in proper order despite the decimals? Here's the eg of the query. $get_records = $db->prepare("SELECT * FROM records ORDER BY records.price DESC");