Re: [HACKERS] Re: [INTERFACES] retrieving varchar size

>
> > > > We could pass back atttypmod as part of the PGresult. I can add
> > > > that to the TODO list. Would that help?
> > > Yes, that would do it!
> > > Thank you for listening to our ravings on this issue.
> > Added to TODO:
> > * Add pg_attribute.atttypmod/Resdom->restypmod to PGresult structure
> > This is a good suggestion.
>
> How do we determine atttypmod for queries like
>
> select '123' || '456';
>
> ?? I might be able to address this with my upcoming type conversion work
> but I don't know if we have enough hooks for this right now...

No way, I think. This would have a atttypmod of -1, which is true
because there is no atttypmod size for this. Once a char()/varchar()
goes into a function, anything can come out.

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