Peter Moser wrote: > Good afternoon, > is it possible to create unique column names or to give column names inside > the parser phase that do not interfer with the outside world, i.e. with > column names from tables or aliases given by the user. > > Some short background: > I created my own from-clause-item, that gets rewritten into a sub-query. I > do this because I want to re-use existing code as much as possible. The > rewritten sub-query gets transformed with "transformRangeSubselect"... > Within this sub-query I need 3 columns that shouldn't interfer with columns > from the input. We refer to them from a JOIN-ON clause and an ORDER-BY > clause.
This seems pretty much the same as a junk attribute, if I understand you correctly. I suggest given a look at how those work. -- Álvaro Herrera http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
