Re: BUG #2393: update fails with unique constraint violation

Re: BUG #2393: update fails with unique constraint violation

This is a discussion on Re: BUG #2393: update fails with unique constraint violation within the pgsql Bugs forums, part of the PostgreSQL category; --> You may want to suggest to the devs to extend the "UPDATE" syntax with "ORDER BY"? such that: update ...

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Re: BUG #2393: update fails with unique constraint violation

#1 (permalink)

04-10-2008, 11:00 AM

Vlad ROMASCANU

Posts: n/a

Re: BUG #2393: update fails with unique constraint violation

You may want to suggest to the devs to extend the "UPDATE" syntax with
"ORDER BY"? such that:

update rumple.directory
set right_visit_id = right_visit_id + 2
where right_visit_id >= parent_right
ORDER BY right_visit_id DESC;

....would work by enforcing a certain update order. And index scan is
performed anyway because of the 'where' clause, might as well do it in
order.

MySQL does it like that AFAIK.

V.

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