slushpuppie Posted January 15, 2009 Share Posted January 15, 2009 i have a table with a column called 'asker' and 'asked', which is keeping like a "buddy list", so it's storing user ids from another table. i want the pairs to be unique - in my application it really doesn't matter who is the asker and who was asked. so for example: uid 1 asks uid 8 to be their friend, so i put in 1 | 8 into the table. i set a UNIQUE index on those two fields, which prevents me from inserting 1 | 8 again, however 8 | 1 can be added, which i don't want to happen. so my question is basically is there a way to set this logic on the database level? or will i need to do this in my application code? thanks Quote Link to comment Share on other sites More sharing options...
ngreenwood6 Posted January 15, 2009 Share Posted January 15, 2009 I don't know if you can do it from a database level but you could do it in you code. Quote Link to comment Share on other sites More sharing options...
fenway Posted January 18, 2009 Share Posted January 18, 2009 If your application always inserts the data ( low_uid, high_uid ), you won't have this problem. Quote Link to comment Share on other sites More sharing options...
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