SessionID, pretty please

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От tom.darci@gmail.com
Тема SessionID, pretty please
Дата
Msg-id 1149711676.382798.146420@g10g2000cwb.googlegroups.com
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Ответы Re: SessionID, pretty please  (Tom Lane <tgl@sss.pgh.pa.us>)
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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


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