cast lo to oid - Mailing list pgsql-sql

From Nekta Katz
Subject cast lo to oid
Date
Msg-id F21wAeRaNgEpTX5V3Gy00000652@hotmail.com
Whole thread Raw
Responses Re: cast lo to oid
List pgsql-sql
Hi,

I have the following table

create table scan_docs (   docid   serial,   shipno numeric(10),   scan    lo,   type text
);

when I try to create the following rule

create rule "delete_scan_docs_lo" as
on delete to "scan_docs"
do select lo_unlink (old.scan);

I get the error message

"psql:scan_docs_rule.sql:3: ERROR:  Function 'lo_unlink(lo)' does not exist
Unable to identify a function that satisfies the given argument types
You may need to add explicit typecasts"

So I add a type cast

create rule "delete_scan_docs_lo" as
on delete to "scan_docs"
do select lo_unlink (old.scan::oid);

but I get the following error message

"psql:scan_docs_rule.sql:3: ERROR:  Cannot cast type 'lo' to 'oid' "

Is there away around this?



_________________________________________________________________
Add photos to your e-mail with MSN 8. Get 2 months FREE*. 
http://join.msn.com/?page=features/featuredemail



pgsql-sql by date:

Previous
From: Christoph Haller
Date:
Subject: Generating a cross tab (pivot table)
Next
From: Richard Huxton
Date:
Subject: Re: Generating a cross tab (pivot table)