Обсуждение: [QUESTIONS] builtin lo_unlink(int4)? why int4 not oid?
Hello all,
e.g.
I want to delete a large object with this table
CREATE TABLE image (
name text,
raster oid
);
-- from programmer's guide
in the psql
foo=> select lo_unlink(raster) from image;
ERROR: function int4(oid) does not exist
Why builtin "lo_unlink" is defined as accepting int4 not oid? Then do I
have to do
foo=> select lo_unlink(int4(oid_text(raster))) from image;
OR
define "raster" as int4? I don't think all these are good idea... Then
how to delete "lo" in the "psql"?
Best Regards,
C.S.Park
On Sat, 13 Jun 1998, Park, Chul-Su wrote:
> Hello all,
>
> e.g.
>
> I want to delete a large object with this table
>
> CREATE TABLE image (
> name text,
> raster oid
> );
>
> -- from programmer's guide
>
> in the psql
>
> foo=> select lo_unlink(raster) from image;
> ERROR: function int4(oid) does not exist
>
> Why builtin "lo_unlink" is defined as accepting int4 not oid? Then do I
> have to do
> foo=> select lo_unlink(int4(oid_text(raster))) from image;
> OR
> define "raster" as int4? I don't think all these are good idea... Then
> how to delete "lo" in the "psql"?
I've just tested this, and I get the same thing (on 6.3.2, and yesterdays
CVS versions).
lo_unlink should be defined with oid (which I thought was the case).
A temporary way round is:
select lo_unlink(raster::int4) from image;
Hackers: Is there any reason why it's defined as an int4?
--
Peter T Mount peter@retep.org.uk or petermount@earthling.net
Main Homepage: http://www.retep.org.uk
************ Someday I may rebuild this signature completely ;-) ************
Work Homepage: http://www.maidstone.gov.uk Work EMail: peter@maidstone.gov.uk
> > foo=> select lo_unlink(raster) from image; > > ERROR: function int4(oid) does not exist > > > > Why builtin "lo_unlink" is defined as accepting int4 not oid? Then do I > > have to do > > foo=> select lo_unlink(int4(oid_text(raster))) from image; > > OR > > define "raster" as int4? I don't think all these are good idea... Then > > how to delete "lo" in the "psql"? > > I've just tested this, and I get the same thing (on 6.3.2, and yesterdays > CVS versions). > > lo_unlink should be defined with oid (which I thought was the case). > > A temporary way round is: > > select lo_unlink(raster::int4) from image; > > Hackers: Is there any reason why it's defined as an int4? > > -- > Peter T Mount peter@retep.org.uk or petermount@earthling.net foo=> select count(lo_unlink(raster::int4)) from bar; ERROR: function int4(oid) does not exist I'm using v6.3.2(patched) on SunSolaris/Redhat5.0 Best Regards, C.S.Park
On Sat, 13 Jun 1998, Chul Su Park wrote: > > > foo=> select lo_unlink(raster) from image; > > > ERROR: function int4(oid) does not exist > > > > > > Why builtin "lo_unlink" is defined as accepting int4 not oid? Then do I > > > have to do > > > foo=> select lo_unlink(int4(oid_text(raster))) from image; > > > OR > > > define "raster" as int4? I don't think all these are good idea... Then > > > how to delete "lo" in the "psql"? > > > > I've just tested this, and I get the same thing (on 6.3.2, and yesterdays > > CVS versions). > > > > lo_unlink should be defined with oid (which I thought was the case). > > > > A temporary way round is: > > > > select lo_unlink(raster::int4) from image; > > > > Hackers: Is there any reason why it's defined as an int4? > > > > -- > > Peter T Mount peter@retep.org.uk or petermount@earthling.net > > > foo=> select count(lo_unlink(raster::int4)) from bar; > ERROR: function int4(oid) does not exist > > I'm using v6.3.2(patched) on SunSolaris/Redhat5.0 What patches have you applied? I'm running Redhat 4.1 on two machines. One has 6.3.2 (unpatched), the other the current CVS version, and the workaround worked. Infact on the current CVS machine, I just re-ran initdb, and tried the workaround again, and it worked. I'm just wondering if one of the patches has removed int4(oid). -- Peter T Mount peter@retep.org.uk or petermount@earthling.net Main Homepage: http://www.retep.org.uk ************ Someday I may rebuild this signature completely ;-) ************ Work Homepage: http://www.maidstone.gov.uk Work EMail: peter@maidstone.gov.uk
> I've just tested this, and I get the same thing (on 6.3.2, and yesterdays
> CVS versions).
>
> lo_unlink should be defined with oid (which I thought was the case).
>
> A temporary way round is:
>
> select lo_unlink(raster::int4) from image;
>
> Hackers: Is there any reason why it's defined as an int4?
Here is a patch for to make lo_unlink use oid, not int4.
---------------------------------------------------------------------------
Index: src/include/catalog/pg_proc.h
===================================================================
RCS file: /usr/local/cvsroot/pgsql/src/include/catalog/pg_proc.h,v
retrieving revision 1.59
diff -c -r1.59 pg_proc.h
*** pg_proc.h 1998/05/29 13:36:31 1.59
--- pg_proc.h 1998/06/13 20:23:49
***************
*** 1174,1180 ****
DATA(insert OID = 963 ( close_lb PGUID 11 f t f 2 f 600 "628 603" 100 0 10 100 foo bar ));
DESCR("closest point to line on box");
! DATA(insert OID = 964 ( lo_unlink PGUID 11 f t f 1 f 23 "23" 100 0 0 100 foo bar ));
DESCR("large object unlink(delete)");
DATA(insert OID = 972 ( regproctooid PGUID 11 f t f 1 f 26 "24" 100 0 0 100 foo bar ));
DESCR("get oid for regproc");
--- 1174,1180 ----
DATA(insert OID = 963 ( close_lb PGUID 11 f t f 2 f 600 "628 603" 100 0 10 100 foo bar ));
DESCR("closest point to line on box");
! DATA(insert OID = 964 ( lo_unlink PGUID 11 f t f 1 f 23 "26" 100 0 0 100 foo bar ));
DESCR("large object unlink(delete)");
DATA(insert OID = 972 ( regproctooid PGUID 11 f t f 1 f 26 "24" 100 0 0 100 foo bar ));
DESCR("get oid for regproc");
--
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