mysql - 如何根据关键字对结果进行排序

Question

我正在开发一个分类网站。为了搜索产品或公司，我在前后都使用了通配符 (%)。

$keyword = "%".$user_keyword."%";

我正在使用以下 mysql 查询:

$query = "SELECT DISTINCT   login.id_user,  
                login.company,
                login.district,
                FROM login LEFT JOIN products 
                ON login.id_user = products.id_user
                WHERE   (login.district LIKE ? 
                    AND login.place LIKE ?)
                        AND
                    (login.company LIKE ?
                    OR login.summary LIKE ?
                    OR products.description LIKE ?)
                LIMIT ?, ?";    
                ";

这是有效的。但我想引用关键字对列表进行排序。例如:如果用户搜索“foo”，可能会得到以下结果:

fool
kafoo
safoora
foo
foolan

我想把“foo”作为第一项

Answer 1

请尝试以下操作:

$query = "SELECT DISTINCT   login.id_user,  
                login.company,
                login.district,
                FROM login LEFT JOIN products 
                ON login.id_user = products.id_user
                WHERE   (login.district LIKE ? 
                    AND login.place LIKE ?)
                        AND
                    (login.company LIKE ?
                    OR login.summary LIKE ?
                    OR products.description LIKE ?)
                order by if(LOCATE('$user_keyword', login.district)=0, 9999, LOCATE('$user_keyword', login.district))+
                         if(LOCATE('$user_keyword', login.place)=0, 9999, LOCATE('$user_keyword', login.place))+
                         if(LOCATE('$user_keyword', login.company)=0, 9999, LOCATE('$user_keyword', login.company))+
                         if(LOCATE('$user_keyword', login.summary)=0, 9999, LOCATE('$user_keyword', login.summary))+
                         if(LOCATE('$user_keyword', products.description)=0, 9999, LOCATE('$user_keyword', products.description))
                LIMIT ?, ?";    
                ";