同一查询中的分组依据和Haveing子句

Question

架构：

地点（pid，名称，类型，经纬度，lng，已删除）

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我想选择地点数量，按地点类型分组，并且距特定经纬度<10 KM

查询：

SELECT count(p.type) as count
FROM (place as p)
where p.deleted != 1
 and p.pid in
    (
    select p2.pid,
            IFNULL(acos(sin((18.5236 *pi()/180)) * sin((p2.lat*pi()/180))+cos((18.5236 *pi()/180)) * cos((p2.lat *pi()/180)) * cos(((73.8478 - p2.lng)*pi()/180))) * 6371.009, 0) AS distance
    from place p2
    having `distance` < 10
    )
group by p.type;

错误：

操作数应包含1列

那是因为我要在子选择查询中选择2列，即pid和distance 。 但是，如果不使用第二选择列，该如何计算距离。

Answer 1

像这样重写脚本

SELECT  count(p.type) AS count,
        -- remove this if not necessary
        SUM(IFNULL(acos(sin((18.5236 *pi()/180)) * sin((p.lat*pi()/180))+cos((18.5236 *pi()/180)) * cos((p.lat *pi()/180)) * cos(((73.8478 - p.lng)*pi()/180))) * 6371.009, 0)) AS distance

FROM place AS p
WHERE p.deleted != 1
GROUP BY p.type
HAVING SUM(IFNULL(acos(sin((18.5236 *pi()/180)) * sin((p.lat*pi()/180))+cos((18.5236 *pi()/180)) * cos((p.lat *pi()/180)) * cos(((73.8478 - p.lng)*pi()/180))) * 6371.009, 0)) < 10