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Re: fetching a unique data set using core data

Subject: Re: fetching a unique data set using core data
From: mmalcolm crawford <email@hidden>
Date: Sat, 13 Aug 2005 11:14:17 -0700
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On Aug 13, 2005, at 9:38 AM, Alan Donsky wrote:

I have a managed object Entity called A which has a sting attribute b. There will be a lot of A objects created. In general, there will be only a few unique b attributes (with many repeats). Is there a way to fetch a unique list of b attributes in the managed object context?

No. You must fetch all As, then you can use array/set operators on the result, such as @distinctUnionOfObjects: <http://developer.apple.com/documentation/Cocoa/Conceptual/ KeyValueCoding/Concepts/ArrayOperators.html>

mmalc


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