List:General Discussion« Previous MessageNext Message »
From:Hank Date:April 19 2005 3:55pm
Subject:Re: zip code search within x miles
View as plain text  
Talk about over complicating things... here's the above query simplifed.

I can not figure out why they were self joining the table three times:

SELECT b.zip_code, b.state,
       (3956 * (2 * ASIN(SQRT(
       POWER(SIN(((a.lat-b.lat)*0.017453293)/2),2) +
       COS(a.lat*0.017453293) *
       COS(b.lat*0.017453293) *
       POWER(SIN(((a.lng-b.lng)*0.017453293)/2),2))))) AS distance
FROM zips a, zips b
WHERE
       a.zip_code = '90210'
GROUP BY distance
having distance <= 5;


-Hank
Thread
zip code search within x milesScott Haneda16 Apr
  • RE: zip code search within x milesgunmuse16 Apr
  • Re: zip code search within x milesRobert Dunlop16 Apr
    • RE: zip code search within x milesScott Johnson19 Apr
  • Re: zip code search within x milesGreg Donald16 Apr
  • Re: zip code search within x milesScott Gifford16 Apr
    • RE: zip code search within x milesgunmuse16 Apr
      • Re: zip code search within x milesJeff Kolber16 Apr
        • Re: zip code search within x milesScott Gifford17 Apr
          • Re: zip code search within x milesJeff Kolber20 Apr
  • Re: zip code search within x milesRichard Lynch19 Apr
    • Re: zip code search within x milesparis lundis19 Apr
      • Re: zip code search within x milesHank19 Apr
    • Re: zip code search within x milesHank19 Apr
      • Re: zip code search within x milesRichard Lynch25 Apr
  • Re: zip code search within x milesEamon Daly19 Apr
    • RE: zip code search within x milesScott Johnson19 Apr
  • Re: zip code search within x milesEamon Daly19 Apr
    • Re: zip code search within x milesHank19 Apr
      • Re: zip code search within x milesKeith Ivey19 Apr
        • Re: zip code search within x milesHank19 Apr
          • Re: zip code search within x milesSGreen19 Apr
            • Re: zip code search within x milesHank19 Apr
              • Re: zip code search within x milesRichard Lynch25 Apr
            • Re: zip code search within x milesJeremy Cole29 Apr
          • Problem detected this morning.Fredrick Bartlett5 Aug
            • Re: Problem detected this morning.Gleb Paharenko7 Aug
        • Re: zip code search within x milesScott Haneda19 Apr
      • Re: zip code search within x milesRichard Lynch25 Apr
        • RE: zip code search within x milesgunmuse25 Apr