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>  -----Original Message-----
>  From: boost-bounces@[...].org
[mailto:boost-bounces@[...].org]
>  On Behalf Of Jonathan Wakely
 
>  > How do you handle NULL values?  the postgresql::row_set_imp::get()
>  function
>  > doesn't seem to account for NULL, which would crash strlen(), atof()
>  etc.
>  
>  I see from the docs that PQgetvalue() never returns a NULL char*.
Does
>  that mean some way of distinguishing empty strings from NULL fields is
>  needed?  i.e. a wrapper for PQgetisnull.

We could make abstract_row_set::get return an optional<field>  instead of
a field.  Then row::get_field could return an optional as well.

I'd suggest that row::get, however, continue its current behavior which
is to return a default constructed value in the presence of null fields.

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