SessionID, pretty please
Hello All-
I am in the process of replacing the backend for a large MS Access
project with PG.
I really could use a Session ID. I would like to create a view like
this:
CREATE VIEW mysettings
AS
SELECT * FROM mysettingstable
WHERE sessionidcolumn = CURRENTSESSIONID()
It is essential that we be able to reference a session id without
passing it in, as this has to work within the "linked table" paradigm
of Access and a lot of Access forms that have already been developed.
The TEMPORARY TABLE feature of PG seemed ideal for these purposes.
However, after burning many many days on 2 different attempts at
solving this using temp tables (first attempt used temp tables, second
attempt tried to use the name of the current temp schema as a unique
session id), I'm at my wits end, as I can't get this to work reliably
with Access and its linked tables...
I see that the log_line_prefix can be set to a Session ID (using
'%c'). Is there any way to get the current value of this from a
function in PG? (current_setting() simply returns the configuration
string, not its actual value.)
My troubles would be solved if I could reference a SessionID from
within PG. Any hope?
THANKS,
-Tom
OK... so I see now that Access seems to be having a field day with
opening and closing sessions, in a way that seems out of my control.
This explains why my temporary table solutions (and then my plperl
global variable solution) were not working.
I will have to go with plan B.
I'd still be curious as to getting a sessionID, though.
-Tom
tom.darci@gmail.com writes:
My troubles would be solved if I could reference a SessionID from
within PG. Any hope?
Create a sequence. At session start, nextval() it to assign a session
ID for your session. Then currval() returns your session ID whenever
you need it.
regards, tom lane
thanks.
Tom Lane wrote:
Show quoted text
tom.darci@gmail.com writes:
My troubles would be solved if I could reference a SessionID from
within PG. Any hope?Create a sequence. At session start, nextval() it to assign a session
ID for your session. Then currval() returns your session ID whenever
you need it.regards, tom lane
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