Re: Willing to fix a TODO case in libpq module

"Wu, Fei" <wufei(dot)fnst(at)cn(dot)fujitsu(dot)com> writes:
> On website: https://wiki.postgresql.org/wiki/Todo#libpq
> I found that in libpq module,there is a todo case:
> -------------------------------------------------------------------------------
> Prevent PQfnumber() from lowercasing unquoted column names
> PQfnumber() should never have been doing lowercasing, but historically it has so we need a way to prevent it

> -------------------------------------------------------------------------------
> I am interested in this one. So ,Had it be fixed?

Hmm, I think this item might be obsolete. The existing definition that
PQfnumber performs quote-stripping and down-casing is a bit overcomplicated,
but it's not impossible to work with. It's pretty hard to call it a bug,
so I don't think we'd consider actually changing the function's behavior.

Maybe there's room for a second function with a different name that
just looks for an exact match to the input string. But I've heard
few if any requests for that. The use-case for PQfnumber is pretty
narrow to begin with --- I suspect most apps just hard-wire the expected
column number --- so the demand for a marginally-more-efficient version
would be even narrower.

regards, tom lane