Hi,
This patch implements the following TODO item:
Allow COPY in CSV mode to control whether a quoted zero-length
string is treated as NULL
Currently this is always treated as a zero-length string,
which generates an error when loading into an integer column
Re: [PATCHES] allow CSV quote in NULL
http://archives.postgresql.org/pgsql-hackers/2007-07/msg00905.phphttp://wiki.postgresql.org/wiki/Todo#COPY
I had a very definite use-case for this functionality recently while importing
CSV files generated by Oracle, and was somewhat frustrated by the existence
of a FORCE_NOT_NULL option for specific columns, but not one for
FORCE_NULL.
I'll add this to the November commitfest.
Regards
Ian Barwick