Question

我正在使用多个查询并且工作正常，我面临的唯一问题是订单不起作用。我试过像

这样的代码

$query = "SELECT  id, name,  reg_number, class, section  FROM register  where id IS NOT NULL ORDER BY `id` DESC";

它在phpmyadmin中正常工作并给我一个合适的结果。但它不适用于我想要使用它的地方。

$query = "SELECT  id, name,  reg_number, class, section  FROM register  where id IS NOT NULL ";

    if ( $name !="" ){
        $query .= " AND `name` LIKE '".$name."%'"; // id is greater then 
     }  

    if ( $status !="" ){
        $query .= " AND `status` LIKE '".$status."%'"; // id is greater then 
     }

     if ( $id_from !="" ){
        $query .= " AND id >= $id_from "; // id is greater then 
     }

     if ( $id_to !="" ){

        $query .= " AND id <= $id_to ";  // id is shorter then 
     } 

      if ( $class !="" ){
        $query .= " AND class IN($class)"; // Selecting class 
     }

     if ( $section !="" ){
        $query .= " AND section IN($section)"; // selecting section
     }

$result = mysql_query($query);

我想在此查询中使用order by，但order by无法使用此功能。

 $query = "SELECT  id, name,  reg_number, class, section  FROM register  where id IS NOT NULL ORDER BY `id` DESC";

还使用了

 $query = "SELECT  id, name,  reg_number, class, section  FROM register  where id IS NOT NULL ORDER BY id DESC";

我不知道我的代码有什么问题。

Answer 1

完成geocoder = new google.maps.Geocoder(); window.getCoordinates = function (address, callback) { var coordinates; geocoder.geocode({ address: address}, function (results, status) { coords_obj_lat = results[0].geometry.location.lat(); coords_obj_lng = results[0].geometry.location.lng(); coordinates = [coords_obj_lat,coords_obj_lng]; callback(coordinates); }) }后，只需添加ORDER BY：

WHERE

ORDER BY不使用mysql多个查询

1 个答案: