Copy to a staging table without the constraint and then write a query to consolidate/remove the duplicate data and
insertthe clean data into the final table.
It doesn't just give a warning because not importing a record from the source data should be a fatal error since it
meansyou have a design mis-match surrounding your import procedure.
David J.
On Dec 19, 2011, at 1:54, Yan Chunlu <springrider@gmail.com> wrote:
> I am using COPY public.table_name FROM STDIN to import data. it is
> very efficient, but if there's any duplicate key exists, the whole
> procedure has been stopped. is there anyway to around this?
>
> why does not postgresql just give a warning and continue the copy?
>
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