Re: How to know if SPI or some other API triggered an ERROR.

From: "dandl" <david(at)andl(dot)org>
To: "'Tom Lane'" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "'PostgreSQL'" <pgsql-general(at)postgresql(dot)org>
Subject: Re: How to know if SPI or some other API triggered an ERROR.
Date: 2016-05-22 01:31:51
Message-ID: 002201d1b3c9$b88a12f0$299e38d0$@andl.org
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Thanks. Yes, I have seen those around and kind of wondered.

It looks like it can only be used in a "C" context. Should do what I need,
if I can find the right place to put it.

Regards
David M Bennett FACS

Andl - A New Database Language - andl.org

> -----Original Message-----
> From: Tom Lane [mailto:tgl(at)sss(dot)pgh(dot)pa(dot)us]
> Sent: Sunday, 22 May 2016 12:01 AM
> To: dandl <david(at)andl(dot)org>
> Cc: 'PostgreSQL' <pgsql-general(at)postgresql(dot)org>
> Subject: Re: [GENERAL] How to know if SPI or some other API triggered an
> ERROR.
>
> "dandl" <david(at)andl(dot)org> writes:
> > The question is whether there is any way to know that some Postgres API
> call such as SPI (or others) did not return but instead triggered an
> elog(ERROR).
>
> I think what you're looking for is to set up a PG_TRY/PG_CATCH block to
> intercept the error as the stack is being unwound.
>
> regards, tom lane

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