Re: plpgsql raise - parameters can be expressions

Pavel Stehule wrote:
> I did trivial patch which eliminate limit raise command.

Looks pretty good. Attached is a cleaned-up version that I'll apply to
HEAD tomorrow, barring any objections.

BTW, one regression is that an undefined variable in the RAISE list is
no longer a compile-time error:

create function foo() returns void as '
begin
raise notice ''hello, world: %'', baz;
end;' language plpgsql;

neilc=# select foo();
ERROR: column "baz" does not exist

I don't see an easy way to get around this, though, and it's not too
concerning. Amusingly it does completely break the SQLSTATE and SQLERRM
tests we added a few days ago :)

BTW, another easy improvement in this area is changing the RAISE format
string to allow it to be an expression, rather than only a string literal.

-Neil