Attached is a patch to create a new system view pg_cursors to list all
available cursors to the current session and transaction.
The patch itself is quite analogous to the patch for pg_prepared_statements
I submitted in December.
The attributes is_holdable, is_binary and is_scrollable are exposed in the
view.
There's a TODO item that only talks about WITH HOLD cursors, however the
proposed system view lists WITHOUT HOLD cursors as well.
o %Allow pooled connections to list all open WITH HOLD cursors
Because WITH HOLD cursors exist outside transactions, this allows
them to be listed so they can be closed.
I noticed that there is no regression test for binary cursors. Should there
be one? I now create one to check the view but don't actually query it.
Joachim
