Re: GET DIAGNOSTICS (was Re: Open 7.1 items)

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Philip Warner <pjw(at)rhyme(dot)com(dot)au>
Cc: Peter Eisentraut <peter_e(at)gmx(dot)net>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: GET DIAGNOSTICS (was Re: Open 7.1 items)
Date: 2001-02-19 01:40:10
Message-ID: 20723.982546810@sss.pgh.pa.us
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Philip Warner <pjw(at)rhyme(dot)com(dot)au> writes:
>> Hmm, that's definitely what SQL99 uses for the syntax. I wonder where
>> Jan got the SELECT INTO syntax --- did he borrow it from Oracle?

> Sadly, we made it up.

Ah so. Well, friendliness aside, I'd go with the spec's syntax.

> We *do* need to support ROW_COUNT, but allowing

> GET DIAGNOSTICS Select ROW_COUNT, SQLCODE, OID Into :a,:b:,:c;

> is a lot friendlier than the standard:

> GET DIAGNOSTICS :a = ROW_COUNT;
> GET DIAGNOSTICS EXCEPTION 1 :b = SQLCODE;
> GET DIAGNOSTICS :c = OID;

It looks to me like SQL99 allows

GET DIAGNOSTICS :a = ROW_COUNT, :b = OID, ...;

which is at least as good as the SELECT syntax, if not better since each
target variable and info spec are kept together.

> P.S. Is Jan around? He's been very quiet recently...

He's still engaged in moving from Germany to Norfolk, VA. I think his
net-access is somewhat erratic :-(

regards, tom lane

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