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我想在SQL中使用對陣查詢以下地理位置查詢: -如何索引SQL數據庫使用對陣查詢
SELECT location.lid, location_instance.uid, users.name
, users.mail , location.latitude , location.longitude , users.picture,
(6371 * ACOS(COS(RADIANS($lat)) * COS(RADIANS(location.latitude))
* COS(RADIANS(location.longitude) - RADIANS($lon)) + SIN(RADIANS($lat))
* SIN(RADIANS(location.latitude)))) AS distance
from {location} LEFT JOIN {location_instance} ON location.lid = location_instance.lid
LEFT JOIN {users} ON location_instance.uid = users.uid WHERE MATCH (users.name)
AGAINST ('$search_term' IN BOOLEAN MODE) ORDER BY distance
但我想我將不得不最初運行的查詢索引在我的數據庫中。請指引我NT多網絡傢伙
編輯:
的