Tom Lane wrote:
> Karel Zak <zakkr@zf.jcu.cz> writes:
>
>> The formatting function API can be pretty simple:
>> text *my_copy_format(text *attrdata, int direction,
>> int nattrs, int attr, oid attrtype, oid relation)
>
>
> This seems like it could only reasonably be implemented as a C function.
> I can't really imagine the average user of COPY wanting to write C in
> preference to, say, an external perl script. What's the real use-case
> for the feature?
>
That is why I suggested providing a pre-written/pre-compiled/installed
function for CSV (call it CSV?). Advanced users could still write their
own as people can write many other things if they know their ways.
