Hi Sean > But you shouldn't have to... Core Data is "not a database" and its use > of SQL is an implementation detail. One shouldn't have to know anything > about SQL to use Core Data. Of course, in practice, such knowledge is > helpful, as you say.
You have a point but, in theory, predicates against lists of objects usually take either the form: <value of a property> <operator> <constant value> ... or possibly: <value of a property> <operator> <value of another property> Some predicates might be usable between two constant values but I have never seen one used, even with lists of objects, as: <constant value> <operator> <value of a property> Such a construct might work in the context of an XML file because the lefthand term could be interpreted as the name of a key but, not normally in a where clause in a database. Joanna -- Joanna Carter Carter Consulting _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
