Question

我写了这个：

$properties  = DB::table('properties')
     ->join('addresses', 'properties.id_address_fk', '=', 'addresses.id')
     ->select('properties.id', 'title', 'city', 'price', 'postedat',
     ( '3959 * acos( cos( radians(37) ) * cos( radians( lat ) ) * cos( radians( lng ) - radians  (-122) ) + sin( radians(37) ) * sin( radians( lat ) ) ) as distance') );

但是在阅读错误通知时，当我写“作为距离”时，我并没有正确地接受Haversie查询。也就是说，我需要该别名以便能够在之后进行过滤：这是错误：

SQLSTATE[42S22]: Column not found: 1054 Unknown column '3959' in 'field list' (SQL: select `properties`.`id`, `title`, `city`, `price`, `postedat`, `3959` as `acos(` from `properties` inner join `addresses` on `properties`.`id_address_fk` = `addresses`.`id` where `propertytype` = house having `distance` < 40 order by `distance` desc limit 5 offset 10)

这就是我需要别名的原因：

 $properties->having('distance', '<', $radius)
            ->orderBy('distance', 'desc')
            ->skip(10)
            ->take(5)
            ->get();

Answer 1

尝试使用DB::raw()使Laravel将字符串直接插入查询而不转义。

$properties  = DB::table('properties')
 ->join('addresses', 'properties.id_address_fk', '=', 'addresses.id')
 ->select('properties.id', 'title', 'city', 'price', 'postedat',
     DB::raw('3959 * acos( cos( radians(37) ) * cos( radians( lat ) ) * cos( radians( lng ) - radians  (-122) ) + sin( radians(37) ) * sin( radians( lat ) ) ) as distance') );

Laravel：在Eloquent查询中使用Haversine公式时，别名未正确写入

1 个答案: