Long time ago, I propose regclass like function which does not throw
an error if the table is not found. Instead I want to let it return
InvalidOid or NULL.
Tatsuo Ishii is...@postgresql.org writes:
Is there any way to use regclass without having ERROR?
pgpool-II needs to find the oid from
On 04.01.2011 11:07, Tatsuo Ishii wrote:
Datum
pgpool_regclass(PG_FUNCTION_ARGS)
{
char*pro_name_or_oid = PG_GETARG_CSTRING(0);
Oid result;
PG_TRY();
{
result = DirectFunctionCall1(regclassin,
It's not generally safe to suppress errors like that. You could leak
locks or tuple descriptors etc. And if the error is not no scuh
table, but e.g. out of memory, you don't want to suppress it anyway.
Thanks. I will create more invasive patch.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English:
Tatsuo Ishii is...@postgresql.org writes:
It's not generally safe to suppress errors like that. You could leak
locks or tuple descriptors etc. And if the error is not no scuh
table, but e.g. out of memory, you don't want to suppress it anyway.
Thanks. I will create more invasive patch.
Why
Why is any of this necessary? It sure looks like you are solving a
problem at the wrong level.
Please read upthread.
--
Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp
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Tatsuo Ishii is...@postgresql.org writes:
Why is any of this necessary? It sure looks like you are solving a
problem at the wrong level.
Please read upthread.
You haven't made any argument why this shouldn't be solvable at the
client side, or at worst with a plpgsql DO block; either of which
On Fri, Sep 3, 2010 at 4:28 AM, Tatsuo Ishii is...@postgresql.org wrote:
Is there any way to use regclass without having ERROR?
pgpool-II needs to find the oid from table name and for the purpose it
issues something like SELECT 'table_name'::regproc::oid. Problem is,
if the table does not
You can write a query against the system catalog tables.
That was pretty hard than I though(schema search path etc.).
Or you could
install a function that wraps the regclass cast in an exception
handler.
That requires users to install the function. Annoying for users.
--
Tatsuo Ishii
SRA
On 2010-09-03 4:46 PM, Tatsuo Ishii wrote:
You can write a query against the system catalog tables.
That was pretty hard than I though(schema search path etc.).
Or you could
install a function that wraps the regclass cast in an exception
handler.
That requires users to install the
On Fri, Sep 03, 2010 at 05:10:44PM +0300, Marko Tiikkaja wrote:
On 2010-09-03 4:46 PM, Tatsuo Ishii wrote:
You can write a query against the system catalog tables.
That was pretty hard than I though(schema search path etc.).
Or you could
install a function that wraps the regclass cast in
Tatsuo Ishii is...@postgresql.org writes:
Is there any way to use regclass without having ERROR?
pgpool-II needs to find the oid from table name and for the purpose it
issues something like SELECT 'table_name'::regproc::oid. Problem is,
if the table does not exist, an error occured and the
Hello, guys.
You wrote:
TI Hi,
TI Is there any way to use regclass without having ERROR?
TI pgpool-II needs to find the oid from table name and for the purpose it
TI issues something like SELECT 'table_name'::regproc::oid. Problem is,
TI if the table does not exist, an error occured and the
On Sep 3, 2010, at 7:31 AM, Tom Lane wrote:
I don't think the cast should act that way, but I could see providing a
separate conversion function that returns 0 ... or perhaps better NULL
... if no match.
+1 I could use this in pgTAP.
David
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Excerpts from David Fetter's message of vie sep 03 10:21:00 -0400 2010:
How about using a SAVEPOINT before the cast? Wouldn't fail your
transaction..
For unattended operation, there are some issues:
* Generating appropriate SAVEPOINT names
* Keeping track of same
* Detecting errors
On Fri, Sep 03, 2010 at 01:28:15PM -0400, Alvaro Herrera wrote:
Excerpts from David Fetter's message of vie sep 03 10:21:00 -0400 2010:
How about using a SAVEPOINT before the cast? Wouldn't fail your
transaction..
For unattended operation, there are some issues:
* Generating
Excerpts from David Fetter's message of vie sep 03 13:31:00 -0400 2010:
We have no mechanism to do this, or any other check, during a bulk
load. It'd be a great feature to have :)
I'm not sure what kind of bulk load you are talking about, nor what does
it have to do with pgpool-II.
--
Tatsuo Ishii is...@postgresql.org writes:
Is there any way to use regclass without having ERROR?
pgpool-II needs to find the oid from table name and for the purpose it
issues something like SELECT 'table_name'::regproc::oid. Problem is,
if the table does not exist, an error occured and
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