Re: Apparent Problem With NULL in Restoring pg_dump

From: Andy Colson <andy(at)squeakycode(dot)net>
To: Rich Shepard <rshepard(at)appl-ecosys(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Apparent Problem With NULL in Restoring pg_dump
Date: 2011-09-15 19:05:36
Message-ID: 4E724C80.3030201@squeakycode.net
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On 9/15/2011 12:31 PM, Rich Shepard wrote:
> The .sql file produced by pg_dump is properly terminated with '\.' as the
> last line, yet I continue to encounter this error:
>
> ERROR: invalid input syntax for type real: " "
> CONTEXT: COPY chemistry, line 47363, column quant: " "
>
> when trying to re-create the table.
>
> It appears that this error is generated when a row has a missing value in
> the 'quant' column and the column contains '\N' in the text file. For
> example,
>
> \N GW-22 2005-03-09 Depth to Water \N Feet \N
> \N \N \N
>
> (It is a single line in emacs but wraps in alpine.)
>
> Is there a different way for me to represent NULL in this text file?
> Replacing \N with NULL produces the same error.
>
> I'm not certain that this line is the real source of the problem but I'm
> quite confident that it is the one throwing the error.
>
> Rich
>

Can you pg_dump again, but use --inserts? Maybe it'll offer some hints.

Also, do you have the right line endings for your os?

To restore, you are using: psql dbname < filename
correct?

-Andy

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