Problems with PQfmod() returning -1 on varchar field (libpq-8.0.0 )? - Mailing list pgsql-interfaces

Hi all,

I've recently encountered a situation where PQfmod() fails to return the
defined length of a varchar field referenced in a query, as expected -
returning no information (-1), instead. Has anyone else encountered this
issue? If so, why does this occur? Can you recommended a method to more
reliably obtain the length of varchar fields, as defined in the relations
referenced by a query? 

Thanks,

Jerry L. Day