UPDATE optimization?

[perlsite]

Hello guys,

Let say:
UPDATE some_table SET some_field=1 WHERE id = some_id
and
UPDATE some_table SET some_field=0 WHERE id <> some_id

what I can do to merge these queries?
The first thing that came up in my mind was something like that:

UPDATE some_table SET some_field=1 WHERE id = some_id; SET some_field=0 WHERE id
<> some_id;
so we can walk-through table only once...

What do you think?

Regards,
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