The specific case that Tom complained about wasn't even in the latest documentation sources anymore. I think the patch should be reverted.
Bruce Momjian writes: > > The following applied patch removes the section Tom thought wasn't > needed anymore. > > --------------------------------------------------------------------------- > > Tom Lane wrote: > > Bruce Momjian <[EMAIL PROTECTED]> writes: > > > I can find no suitable replacement for this example. Can anyone else? > > > > > Peter Eisentraut wrote: > > >> This example in User's Guide section 7.2 doesn't work anymore at all: > > >> > > >> tgl=> select @ text '-4.5' as "abs"; > > > > Both of the examples in this section have been obsoleted by our recent > > elimination of a lot of implicit casts. This one would still work if > > text-to-float8 were an implicit cast, but it's not anymore. Also, > > though the second one still acts as described, the reason given for it > > in the text is wrong: the system is not unable to choose among multiple > > alternatives. Rather, it finds *no* alternatives, again because the > > text-to-various-int-types casts are no longer implicit. > > > > The closest similar cases that I can find for the first example are not > > good replacements because they are also slated for destruction :-(. > > Basically, I see us moving away from the preferred-type mechanism, and > > perhaps eliminating it entirely soon. > > > > I'd just remove the whole of Example 7.3, I think. The mechanisms are > > still there, for now, but they are not invoked in any standard cases. > > > > regards, tom lane > > > > -- Peter Eisentraut [EMAIL PROTECTED] ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org
