Re: [PATCH] SQL function to report log message

Jim Nasby <Jim(dot)Nasby(at)BlueTreble(dot)com> writes:
> On 7/13/15 3:39 PM, dinesh kumar wrote:
>> Ah. It's' my bad interpretation. Let me work on it, and will send a new
>> patch as a wrapper sql function for ereport.

> You might want to present a plan for that; it's not as trivial as it
> sounds due to how ereport works. In particular, I'd want to see (at
> minimum) the same functionality that plpgsql's RAISE command now
> provides (errdetail, errhint, etc).

The real question is why the existing functionality in plpgsql isn't
sufficient. Somebody who wants a "log from SQL" function can easily
write a simple plpgsql function that does exactly what they want,
with no more or fewer bells-n-whistles than they need. If we try
to create a SQL function that does all that, it's likely to be a mess
to use, even with named arguments.

I'm not necessarily against the basic idea, but I think inventing
something that actually offers an increment in usability compared
to the existing alternative is going to be harder than it sounds.

regards, tom lane