Bruce Momjian wrote:
>
> Agreed. I think that was the reason we kept TOAST and large objects,
> because large objects were designed for random read-write. If we can
> get large objects to auto-delete, probably with pg_depend, we can then
> use them seamlessly with BLOB I/O routines.
Not entirely. BLOB's should have copy semantics, so that doing
INSERT INTO tab1 SELECT id, blob_column FROM tab2 ...
and subsequently changing the blob in either tab1 or tab2 does NOT change the blob in the other table.
Currently,even if you make the pg_depend stuff smart enough to let the blob live until all references are
gone,the two tables would share the same blob. And that's not only IMHO wrong, it's also incompatible to Oracle
:-)
Jan
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