Just a note to everyone wanting to learn how to develop in PL/pgSQL
(essential for OpenACS 4 porting and new OpenACS 4 modules).
Yesterday I finished the revamping of the PL/pgSQL documentation. I
re-structured the docs, added many more examples, etc. It was
committed to the PG CVS and will be released with 7.1. If you want to
take a look at it now, head to http://www.brasileiro.net/postgres.
One interesting command that was added (AFAIK) in beta 5 or 6 (at
least to the docs) is this one:
1.2.5.4. Obtaining other results status
GET DIAGNOSTICS variable = item [ , ... ]
This command allows retrieval of system status indicators. Each item
is a keyword identifying a state value to be assigned to
the specified variable (which should be of the right datatype to
receive it). The currently available status items are
ROW_COUNT, the number of rows processed by the last SQL query sent
down to the SQL engine; and RESULT_OID, the Oid
of the last row inserted by the most recent SQL query. Note that
RESULT_OID is only useful after an INSERT query.
I have beta3 installed (I _really_ should not be running this...)
and it doesn't soom to work for me, so I guess it was added after
that.
