Re: Must be owner to truncate?
Mike Mascari <mascarm@mascari.com>
From: Mike Mascari <mascarm@mascari.com>
To: Stephen Frost <sfrost@snowman.net>
Cc: Tom Lane <tgl@sss.pgh.pa.us>, andrew@supernews.com, pgsql-hackers@postgresql.org
Date: 2005-07-09T13:47:50Z
Lists: pgsql-hackers
Stephen Frost wrote: > delete from x;/truncate x; > --> Creates a new, empty, file and makes it the 'current' file > --> Marks the old file for deletion, but it is kept around for any > transactions which were started before the truncate; > --> New transactions use the empty file > --> Once all transactions using the old file have completed, the old > file can be deleted. > --> Old transactions which insert rows would need to use the new file > or scan the old file for rows which they added, I suppose. And when the transaction that issued the TRUNCATE aborts after step 3, but newer transactions commit? Mike Mascari