[Xapian-discuss] Open postlist

[double]

Hi,

The FAQ (http://trac.xapian.org/wiki/FAQ/UniqueIds) recommends,
to open a postlist instead of a search:
     If you want to retrieve the document, open the postlist for "Q65A"
     and read the first (and only) document id (this will be a little more
     efficient that running a search for "Q65A").

How can I open the postlist?

Thank you very much
Markus