Re: More schema queries

On Sat, 2002-05-18 at 01:01, Tom Lane wrote:
> "Dave Page" <dpage(at)vale-housing(dot)co(dot)uk> writes:
> > It doesn't work quite like that anyway.
>
> Oh, so essentially you want to simulate the namespace search on the
> application side. I see.
>
> > Anyway, current_schemas() seems ideal, thanks.
>
> It may not be exactly what you need, because it doesn't tell you about
> implicitly searched schemas --- which always includes pg_catalog and
> will include a temp namespace if you've activated one. For instance,
> if current_schemas claims the search path is
>
> regression=> select current_schemas();
> current_schemas
> -----------------
> {tgl,public}
> (1 row)
>
> then the real path is effectively {pg_catalog,tgl,public}, or possibly
> {pg_temp_NNN,pg_catalog,tgl,public}.
>
> There was already some discussion about making a variant version of
> current_schemas() that would tell you the Whole Truth, including the
> implicitly searched schemas. Seems like we'd better do that; otherwise
> we'll find people hardwiring knowledge of these implicit search rules
> into their apps, which is probably a bad idea.
>
> Anyone have a preference about what to call it? I could see making a
> version of current_schemas() that takes a boolean parameter, or we
> could choose another function name for the implicit-schemas-too version.

or we could make another function with the same name :)

current_schemas('full')

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Hannu