Thanks for the help with that, Noah. Indeed the sizes do look like I'd expect them to if I force deflation of the
byteavalue before inserting it into the EXTENDED column.
On Apr 21, 2011, at 2:02 PM, Noah Misch wrote:
> On Mon, Apr 11, 2011 at 03:19:23PM -0700, Joel Stevenson wrote:
>> create table obj1 ( object bytea );
>> create table obj2 ( object bytea );
>> alter table obj2 alter column object set storage external;
>> insert into obj1 ( object ) select object from serialized_content where id = 12345;
>> insert into obj2 ( object ) select object from obj1;
>
> If the value that shows up for insertion is already compressed, EXTERNAL storage
> will not decompress it. Change this line to
>
> insert into obj2 ( object ) select object || '' from obj1;
>
> to observe the effect you seek.
>
> Given the purpose of EXTERNAL storage, this might qualify as a bug.