[rrd-users] Help !

Simon Hobson linux at thehobsons.co.uk
Tue Jul 5 11:56:45 CEST 2011

othmane zine wrote:

>Thanks Simon for your help but the problem is that I have an ID 
>field in my database and I want to filter them before graphing for 
>example I want just to graph data that have an ID= 4, that was my 
>question, I hope that I've explained it better this time

First, please keep discussions on-list unless otherwise requested. 
It's bad etiquette (and a good way to get ignored) to contact someone 
directly and off-list :
1) It assumes they have the time to provide you with personal, 
one-to-one, assistance.
2) It assumes no-one else can help.
3) It assumes no-one else (including anyone searching the archives in 
the future) could benefit from the assistance given.

Which is nothing whatsoever to do with RRD. That's a simple data problem.
I'm not going to do your coursework for you, but you need to study 
the database documentation - and since it's MySQL then you need to 
look at the syntax for the "WHERE" clause.

And in fact, you've already given half the answer above - the test 
condition is "ID = 4".

Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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