psql -R controls the record separator for query output, not COPY.
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Murthy Kambhampaty wrote:
> There seems to be a bug in psql's -R option (and the -P recordsep= )
> version. I find that whereas the following succeeds:
>
> /usr/local/pgsql/bin/psql -U xxxx -d xxxx -h xxxx \
> -P format=unaligned -P fieldsep='\t' -P tuples_only \
> -c "select * from tab where yoo='hoo'" | /usr/local/pgsql/bin/psql
> -U xxxx -d xxxx -h xxxx \
> -c "copy bar from stdin"
>
> adding -R '\n' or -P recordsep='\n' or -P recordsep=newline all give an
> error that the last field's data is too long for that field's format.
> Presently, this seems a bogus option, since the COPY command cannot handle
> any record separator except a newline, but the documentation for the "copy
> from" command states that '\n' will be parsed as a newline, so this seems a
> bug.
>
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