simple update from select ??

Hi folks

I've got a table of pieces of equipment.
One piece of equipment may be owned by another piece of equipment, and
may own multiple other pieces.

To hold the relationship I have a piece_pieces table holding the owner
(pp_id) part id and the owned part ids (pp_part).

I'v realised I can store this within the original table so I've added an
owner attribute. I need to now populate this now from the other table,
but I can't work out how.

I've got pieces table

p_id -- part id
p_owner -- new owner attribute

piece_pieces table

pp_id -- id of owner
pp_part -- id of owned

--
Gary Stainburn

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