2014/1/12 Bruce Momjian <[email protected]> > On Sat, Jan 11, 2014 at 10:06:27PM +0100, Pavel Stehule wrote: > > > > > > > > 2014/1/11 Tom Lane <[email protected]> > > > > Bruce Momjian <[email protected]> writes: > > > Oh, I think you are right. I have reverted the patch. Attached is > > > proposed documentation for '='. > > > > Meh. Variable initialization is only one of multiple cases > (assignment, > > GET DIAGNOSTICS; maybe others, I've not examined the grammar). Also, > > if we do it like this, we're implying that both := and = are equally > > preferred, which might not be the impression we want to leave. > > > > > > GET DIAGNOSTICS is defined by standard - and there "=" should be allowed > only - > > although we allow ":=" too. It is a embedded SQL statement - although it > is > > implemented as plpgsql statement. > > OK, docs updated for that. I assume OPEN and FOR also can take := or =, > right? >
no, there are not used assign_operator It is used only in DECLARE DEFAULT, ASSIGN and GET DIAGNOSTICS > > > Same situation is with UPDATE statement - we don't allow ":=" there. > > > > > > > > I'd be a bit inclined to just stick a NOTE somewhere saying that "=" > > can be used in place of ":=" for assignment. > > > > > > ok > > > > If we accept it and we close this topic, then following comment should be > > removed > > > > assign_operator : '=' /* not documented because it might be removed > someday * > > Comment updated. Patch attached. > > -- > Bruce Momjian <[email protected]> http://momjian.us > EnterpriseDB http://enterprisedb.com > > + Everyone has their own god. + >
