如何通過在MySQL/PHP

Question

計數查詢滾動我有這個疑問：

select count(*) , (3959 * acos(cos(radians(34.469994)) * cos(radians(lat)) * cos(radians(lng) - radians(-118.196739)) + sin(radians(34.469994)) * sin(radians(lat)))) AS distance from users HAVING distance < 150 

這是應該在一定的緯度和經度150英里吸引用戶。
如何獲得計數（*）部分的數量？

此外，任何想法如何切換英里和公里之間的這種查詢？

謝謝！

Answer 1

select count(*) as count, (3959 * acos(cos(radians(34.469994)) * cos(radians(lat)) * cos(radians(lng) - radians(-118.196739)) + sin(radians(34.469994)) * sin(radians(lat)))) AS distance from users HAVING distance < 150