Re: COPY enhancements

Dimitri Fontaine wrote:
> Simon Riggs <simon(at)2ndQuadrant(dot)com> writes:
> > It will be best to have the ability to have a specific rejection reason
> > for each row rejected. That way we will be able to tell the difference
> > between uniqueness violation errors, invalid date format on col7, value
> > fails check constraint on col22 etc..
>
> In case that helps, what pgloader does is logging into two files, named
> after the table name (not scalable to server-side solution):
> table.rej --- lines it could not load, straight from source file
> table.rej.log --- errors as given by the server, plus pgloader comment
>
> The pgloader comment is necessary for associating each log line to the
> source file line, as it's operating by dichotomy, the server always
> report error on line 1.
>
> The idea of having two errors file could be kept though, the aim is to
> be able to fix the setup then COPY again the table.rej file when it
> happens the errors are not on the file content. Or for loading into
> another table, with all columns as text or bytea, then clean data from a
> procedure.

What would be _cool_ would be to add the ability to have comments in the
COPY files, like \#, and then the copy data lines and errors could be
adjacent. (Because of the way we control COPY escaping, adding \# would
not be a problem. We have \N for null, for example.)

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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