MySQL查詢距離我最近的經緯點

SELECT  
  id, `name`,(  
    6378137 * ACOS (  
      COS ( RADIANS(60.000000) )  
      * COS( RADIANS( lat ) )  
      * COS( RADIANS( lng ) - RADIANS(70.000000) )  
      + SIN ( RADIANS(60.000000) )  
      * SIN( RADIANS( lat ) )  
    )
  ) AS distance  
FROM `T_ENTERPRISE`
ORDER BY distance 
LIMIT 0 , 20;  

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