| Lists: | pgsql-hackers |
|---|
| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org> |
| Subject: | What is lo_insert? |
| Date: | 2011-01-05 17:21:58 |
| Message-ID: | 201101051721.p05HLwf14279@momjian.us |
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| Lists: | pgsql-hackers |
The psql manual page mentions lo_insert:
LASTOID
The value of the last affected OID, as returned
--> from an INSERT or lo_insert command. This variable
is only guaranteed to be valid until after the
result of the next SQL command has been displayed.
Should that be lo_import? I don't see lo_insert used anywhere. And it
doesn't seem lo_import sets LASTOID.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: What is lo_insert? |
| Date: | 2011-01-06 02:20:34 |
| Message-ID: | AANLkTik0YcgjvHPm3eoi7Uax3CoO9h3t4uEOc+5yskaY@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Wed, Jan 5, 2011 at 12:21 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> The psql manual page mentions lo_insert:
>
> LASTOID
> The value of the last affected OID, as returned
> --> from an INSERT or lo_insert command. This variable
> is only guaranteed to be valid until after the
> result of the next SQL command has been displayed.
>
> Should that be lo_import? I don't see lo_insert used anywhere. And it
> doesn't seem lo_import sets LASTOID.
I think it's supposed to be lo_import. It sets LASTOID if you do this:
rhaas=# \lo_import '/etc/passwd'
lo_import 16414
rhaas=# select :LASTOID;
?column?
----------
16414
(1 row)
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
| From: | Bruce Momjian <bruce(at)momjian(dot)us> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: What is lo_insert? |
| Date: | 2011-01-06 02:32:40 |
| Message-ID: | 201101060232.p062Weq04289@momjian.us |
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| Lists: | pgsql-hackers |
Robert Haas wrote:
> On Wed, Jan 5, 2011 at 12:21 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
> > The psql manual page mentions lo_insert:
> >
> > ? ? ? ? ? LASTOID
> > ? ? ? ? ? ? ? The value of the last affected OID, as returned
> > --> ? ? ? ? ? ?from an INSERT or lo_insert command. This variable
> > ? ? ? ? ? ? ? is only guaranteed to be valid until after the
> > ? ? ? ? ? ? ? result of the next SQL command has been displayed.
> >
> > Should that be lo_import? ?I don't see lo_insert used anywhere. ?And it
> > doesn't seem lo_import sets LASTOID.
>
> I think it's supposed to be lo_import. It sets LASTOID if you do this:
>
> rhaas=# \lo_import '/etc/passwd'
> lo_import 16414
> rhaas=# select :LASTOID;
> ?column?
> ----------
> 16414
> (1 row)
OK, but it does not set :LASTOID if you do this:
SELECT lo_import('/etc/motd');
I have updated the patch to say '\lo_import' and backpatched to 9.0.X.
--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
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