Hi all,
I'm in the process of writing an OLE DB provider for postgres. I am,
right now, at the point where updating an entry becomes an issue.
Ideally, I would open an updateable cursor for a table/view, and use
that. Unfortunetly, Postgres doesn't seem to support those at all.
As an
Shachar Shemesh [EMAIL PROTECTED] writes:
Would adding OID to the rows returned by each Select call, and then doing
update blah where oid=xxx when I'm requested to update the row sound like a
reasonable stategy, in lieu of updateable cursors? Can anyone suggest a better
way?
If you're in
I believe the ODBC driver uses CTID for this sort of problem. CTID is
guaranteed to exist and to be fast to access (since it's a physical
locator). Against this you have the problem that concurrent updates
of the record will move it, leaving your CTID invalid. However, that
IIRC the ctid
Zeugswetter Andreas SB SD [EMAIL PROTECTED] writes:
IIRC the ctid access follows the chain up to the currently valid
tuple ?
No.
I think Hiroshi or someone put in a function you can use to follow the
chain, but a simple WHERE ctid = whatever won't do it. In any case,
if you're not holding an
-Original Message-
From: Shachar Shemesh [mailto:[EMAIL PROTECTED]
Sent: 18 February 2004 13:18
To: Hackers; PostgreSQL OLE DB development
Subject: [HACKERS] OIDs, CTIDs, updateable cursors and friends
Would adding OID to the rows returned by each Select
call, and then doing
Dave Page wrote:
-Original Message-
From: Shachar Shemesh [mailto:[EMAIL PROTECTED]
Sent: 18 February 2004 13:18
To: Hackers; PostgreSQL OLE DB development
Subject: [HACKERS] OIDs, CTIDs, updateable cursors and friends
Would adding OID to the rows returned by each Select
call
-Original Message-
From: Shachar Shemesh [mailto:[EMAIL PROTECTED]
Sent: 18 February 2004 14:10
To: Dave Page
Cc: Hackers; PostgreSQL OLE DB development
Subject: Re: [HACKERS] OIDs, CTIDs, updateable cursors and friends
I would, except I'm not sure how many queries I would
Dave Page wrote:
-Original Message-
From: Shachar Shemesh [mailto:[EMAIL PROTECTED]
Sent: 18 February 2004 14:10
To: Dave Page
Cc: Hackers; PostgreSQL OLE DB development
Subject: Re: [HACKERS] OIDs, CTIDs, updateable cursors and friends
I would, except I'm not sure how many queries
-Original Message-
From: Shachar Shemesh [mailto:[EMAIL PROTECTED]
Sent: 18 February 2004 14:56
To: Dave Page
Cc: Hackers; PostgreSQL OLE DB development
Subject: Re: [HACKERS] OIDs, CTIDs, updateable cursors and friends
I'll have a look at that. How would updateable cursors do
