Re: DELETE syntax on JOINS

Jean-Michel Pour wrote:
-- Start of PGP signed section.
> Dear Friends,
>
> First, thank you very much for considering a fix on the GROUP BY issue.
> I am starting a new thread about another issue:
>
> It seems that DELETE cannot understand INNER JOINS and needs HAVING.
>
> Read:
> http://drupal.org/node/555562 (main message)
> http://drupal.org/node/555648
>
> I don't see why PostgreSQL would not be able to run queries like:
>
> DELETE h
> FROM history AS h
> INNER JOIN term_node AS tn ON (h.nid = tn.nid)
> INNER JOIN term_data AS td ON (td.tid = tn.tid)
> WHERE h.uid = 2067 AND td.vid = 2
>
> Ultimately, why not allow:
>
> DELETE h, tn
> FROM history AS h
> INNER JOIN term_node AS tn ON (h.nid = tn.nid)
> INNER JOIN term_data AS td ON (td.tid = tn.tid)
> WHERE h.uid = 2067 AND td.vid = 2
>
> IMHO this would improve compliance towards other database systems. To me
> this seems to be in the reasonable scope of compatibility.

Which "other database systems"? Only MySQL? If it is MySQL-only, we
are unlikely to add it.

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Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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