I use this SQL query: 

select n.id
from nodes n, metadata m
where n.id=m.id
  and ((m.name='color' and m.value='red') or
       (m.name='name' and m.value='george'))
group by n.id
having count(n.id)=2;

[download]
Of course, the query can be built dinamically and should be adapted to your needs. I'm not an SQL expert, so I welcome any opinion on this approach.

Ciao, Valerio

In reply to Re: Querying Meta Data by valdez
in thread Querying Meta Data by eric256

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