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more blob questions

From: Kevin Kempter <kevin(at)kevinkempterllc(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: more blob questions
Date: 2008-01-18 04:45:25
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-admin
Hi List;

Suppose I have a table with say an integer key, a char column and a large 
object column.

can I simply delete a row from the table (delete from bigtable where...), then 
run a vacuum (or vacuum full) ? If so, in this scenario will postgres release 
the space back to the OS or must I first remove the large object with 
lo_unlink() ?

also, does the contrib vacuumlo perform tasks I cannot do via vacuum and  
lo_unlink ?

Thanks in advance..



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