Marc,
That seemed to get most of the way (setting to NULL).  However, it
seems that does not work for integer columns?  I'm still getting an
error:
ERROR:  invalid input syntax for integer: "NULL"
CONTEXT:  COPY cgap_lib,line 1, column clones: "NULL"
Here is the schema:
CREATE TABLE "cgap_lib" (
   "cgap_lib_id" character varying(16) NOT NULL,
   "organism" character varying(64) NOT NULL,
   "libid" character varying(16) NOT NULL,
   "unilib_id" character varying(16) NOT NULL,
   "descr" character varying(3500),
   "keywords" character varying(256),
   "clones" smallint,
   "strain" character varying(128),
   "tissue" character varying(256),
   "unique_tissue" character varying(128),
   "edit_date" date NOT NULL,
   "get_date" date NOT NULL
);
Here is the first line:
cg2_000000027681    Mus musculus    241    78    Mouse liver library    liver, normal,
bulk, EST    NULL    NULL    NULL    liver    2004-8-17    2004-8-23
Any more insights?
Thanks again,
Sean
On Sep 17, 2004, at 12:15 PM, M. Bastin wrote:
> At 9:37 AM -0400 9/17/04, Sean Davis wrote:
>> Marc,
>>
>> Thanks.  That is what I had thought.  Another detail--I have fields
>> (including some dates) that include "" (empty fields).  What is the
>> best way to deal with those?  Should I just convert them to NULL
>> (assuming that was the actual meaning) and then use that as the NULL
>> string in the copy command?
>
> Sean,
>
> I think you could try that.  You may leave them empty as well (after
> stripping '"') and use that for NULL with the COPY command.
>
> Marc