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I am trying to match US charter schools to noncharter schools in QGIS. I have constructed a buffer of 10 miles around each charter schools and then tried a join attributes by location match with non charter schools. This has been partly successful. I get matches but only one charter school buffer zone is associated with each traditional school. What I really want to have is a match between each traditional school and all the charter school buffer zones the traditional school is located in. The result will be a table with multiple records for some/many traditional schools because they are located in more than one charter school buffer zone.

In short I want to create a many point to many polygon join? thanks in advance, Nat

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Do you have a key in each table? –  Willy Jan 16 '13 at 2:23
yes, I have keys in both tables, I just want to get a table with multiples of each key, but no multiples of the combined keys. –  Nat Jan 16 '13 at 13:34
hello dear nat hello willy - plz keep us posted. i am very very interested in this matter. LET us know more –  zero Jun 23 '14 at 19:01

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