Re: COPY table_name (single_column) FROM 'unknown.txt' DELIMITER E'\n'

From: Thomas Kellerer <shammat(at)gmx(dot)net>
To: pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: COPY table_name (single_column) FROM 'unknown.txt' DELIMITER E'\n'
Date: 2021-05-06 06:10:20
Message-ID: 9d44d69d-0bdc-4974-e598-1c9b210fd132@gmx.net
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

Joel Jacobson schrieb am 05.05.2021 um 17:30:
> Could it be an idea to exploit the fact that DELIMITER E'\n' is currently an error?
>
>     ERROR:  COPY delimiter cannot be newline or carriage return
>
> That is, to change E'\n' to be a valid delimiter, which would simply read each line
> delimited by newlines, as a single column.
>
> The hack I'm currently abusing is to find some one-byte character that is not present anywhere in the text file,
> and then to use that character as a delimiter. This doesn't work when needing to deal with a text file
> which content is unknown at the time when writing the code though, so it's mostly useful for throwaway one-off queries.

What about

delimiter E'\1'

The probability that a file contains the ASCII "character" 1 seems rather low.

Thomas

In response to

Browse pgsql-hackers by date

  From Date Subject
Next Message Joel Jacobson 2021-05-06 06:13:48 Re: COPY table_name (single_column) FROM 'unknown.txt' DELIMITER E'\n'
Previous Message Joel Jacobson 2021-05-06 05:52:11 Re: COPY table_name (single_column) FROM 'unknown.txt' DELIMITER E'\n'