On 02/19/2011 11:07 PM, Tom Lane wrote:
However, it occurs to me that as long as we're passing the function the
ExplainState, it has what it needs to add arbitrary EXPLAIN result
fields. Although it could do this the hard way, we could make it a lot
easier by exporting the ExplainProperty<Type> functions. Then it'd be
possible to produce output like
Foreign Scan on public.agg_csv
Foreign File: @abs_srcdir@/data/agg.csv
Foreign File Size: 46
which seems a whole lot nicer than the current design. In this scheme
the callback function would just be declared to return void.
Anybody have an objection to doing it like that?
If we allow the invention of new explain states we'll never be able to
publish an authoritative schema definition of the data. That's not
necessarily an argument against doing it, just something to be aware of.
Maybe we don't care about having EXPLAIN XML output validated.
cheers
andrew
--
Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-hackers
