Solved

list all zip to zip permutations

Posted on 2011-09-12
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Last Modified: 2012-05-12
I have a zip code listing and need to create a zip to zip listing. The order of the zips do matter so if I have 01001 to 17325, i still would need the reverse too, 17325 to 01001. I don't think I can do this in excel because of the 1 million row limit but can I do this in sql?
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Question by:k1ng87
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4 Comments
 
LVL 18

Expert Comment

by:Garry Glendown
ID: 36523879
Pretty simple code ...

select a.zipcode FromZip, b.zipcode ToZip from zip a, zip b where a.zipcode!=b.zipcode;

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Drop the "where" if you also want same zipcodes listed as from and to ...
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Accepted Solution

by:
deighton earned 500 total points
ID: 36523887
SELECT t1.zip, t2.zip FROM YourTable t1 JOIN YourTable t2 ON T1.zip <>T2.zip
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Expert Comment

by:Anthony Perkins
ID: 36526728
And that is going to be a big table, with somewhere around 2.5 billion rows.
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Author Comment

by:k1ng87
ID: 36531869
yeah...i dont think this is going to be practical as the row count will be insane...but the solution did work!
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