Re: DELETE syntax on JOINS - Mailing list pgsql-hackers

Bruce Momjian wrote:

> > 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.

The SQL standard does not support this syntax.  They would have you put
the joins in a subselect (which is often not enough because then you
can't use outer joins).

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.