SQL JOIN like operation on the TTrees from Tomasz Bold on 2005-03-17 (RootTalk)

From: Tomasz Bold <bold_at_fatcat.ftj.agh.edu.pl>
Date: Thu, 17 Mar 2005 09:43:32 +0100

Hi ROOTers,

I have to use an information from 3 TTrees. Each of them has an unique field (composed out of 2 actually). I do not see how can I use information from all 3 without making one large TTree. I do not see where one can specify the field for JOIN in the AddFriend method. Or I missed something?

Any hint will be welcome.

The relations between tables are simple 1<--->1 but some fields are missing from time to time. So actually 1-->0..1.

Regards,

Tomasz Bold

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Received on Thu Mar 17 2005 - 09:42:24 MET

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