Re: Re: pg_dump and LOs (another proposal)

At 13:06 5/07/00 -0400, Tom Lane wrote:
>
> UPDATE userTable SET oidcolumn = tmptable.newLOoid WHERE
> oidcolumn = tmptable.oldLOoid;
>

It's actually nastier than this since there could be multiple oid columns,
implying, potentially, multiple scans of the table.

I suppose

update userTable set
oidCol1 = Coalesce( (Select newLOoid from oidxref where oldLOoid = oidCol1
), oidCol1 ),
oidCol2 = Coalesce( (Select newLOoid from oidxref where oldLOoid = oidCol2
), oidCol2 ),
...

would work, or at least only update each row once, but it looks slow.

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