From: | "Keith Worthington" <keithw(at)narrowpathinc(dot)com> |
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To: | "PostgreSQL Novice" <pgsql-novice(at)postgresql(dot)org> |
Subject: | Null vs empty string |
Date: | 2004-12-04 01:57:24 |
Message-ID: | 20041204015724.M85155@narrowpathinc.com |
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Thread: | |
Lists: | pgsql-novice |
Hi All,
I am loading data into a PostgreSQL v7.3.6 database running on RedHat
Enterprise Linux ES. This is accomplished by a shell script running the COPY
command. The data is in comma seperated value format.
I am experiencing two difficulties.
Firstly, when loading a missing (consecutive commas) numeric value (int4) an
error message is generated indicating that the string cannot be parsed. I
would prefer that a NULL value be inserted.
Secondly, when loading a missing (consecutive commas) string (varchar) an
empty string is inserted. Again, I would prefer that a NULL value be inserted
as later on a foreign key constraint complains bitterly about not being able
to match the empty string. :-(
Can you please explain how best to accomplish these results.
Kind Regards,
Keith
______________________________________________
99main Internet Services http://www.99main.com
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