SQL搜索使用Haversine在Doctrine [英] SQL search using Haversine in Doctrine

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本文介绍了SQL搜索使用Haversine在Doctrine的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我想通过坐标进行搜索,即我想要一个像这样的功能:

  function getLocationsInCircle ($ lat,$ long,$ minDist,$ maxDist){
//返回所有至少$ minDist
//公里的地方,不超过$ maxDist公里
我有一个位置表,用于存储所有位置ID及其纬度和经度。



haversine公式对我想要做的很好。

  6371 * ACOS(SIN(RADIANS($ lat))* SIN(RADIANS(纬度))+ COS(RADIANS($ lat))* COS(RADIANS(纬度))* COS(RADIANS(经度) -  RADIANS )))

我只是看不到如何在Doctrine中运行该查询。

解决方案

尝试这样:

  Doctrine_query: :create() - > select('id')
- > addSelect((6371 * ACOS(SIN(RADIANS($ latitude))* SIN(RADIANS(l.latitude))+ ($纬度))* COS(RADIANS(l.latitude))* COS(RADIANS(l.longitude) - RADIANS($ longitude))))作为距离)
- > from('Location l' )
- > having(Distance> $ minDist AND Distance< $ maxDist);


I want to do a search by coordinates, i.e. I want to have a function that works like this:

function getLocationsInCircle($lat, $long, $minDist, $maxDist){
    //return all the places that are at least $minDist 
    //kilometers away and no more than $maxDist kilometers away
}

I have a "location" table that stores all location Ids and their latitude and longitude.

The haversine formula is good enough for what I want to do

6371 * ACOS(SIN(RADIANS( $lat )) * SIN(RADIANS( latitude )) + COS(RADIANS( $lat )) * COS(RADIANS( latitude )) * COS(RADIANS( longitude ) - RADIANS( $long )))

I just don't see how to run that query in Doctrine.

解决方案

Try this :

Doctrine_query::create()->select('id')
    ->addSelect("(6371 * ACOS(SIN(RADIANS($latitude)) * SIN(RADIANS(l.latitude)) + COS(RADIANS($latitude)) * COS(RADIANS(l.latitude)) * COS(RADIANS(l.longitude) - RADIANS($longitude)))) as Distance")
    ->from('Location l')
    ->having("Distance > $minDist AND Distance < $maxDist");

这篇关于SQL搜索使用Haversine在Doctrine的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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