Re: lo_copy()

"Nigel J. Andrews" <nandrews(at)investsystems(dot)co(dot)uk> writes:
> I wonder if anyone has any comments on this [psuedo] code:

> new loid := SELECT lo_creat(131072 + 262144);

> UPDATE pg_largeobject SET
> data = (SELECT data
> FROM pg_largeobject
> WHERE loid = <source loid> AND pageno = 0)
> WHERE loid = <new loid> AND pageno = 0;

> INSERT INTO pg_largeobject
> (loid, pageno, data)
> (SELECT <new loid>, pageno, data
> FROM pg_largeobject
> WHERE loid = <source loid> AND pageno > 0
> );

I believe this will work, but it requires superuser privileges to
scribble on pg_largeobject directly. Probably would be better to go
through the gruntwork of creating a fully supported lo_copy() operation.

regards, tom lane