On 1/8/20 10:54 AM, Wells Oliver wrote:
> I have a CSV that's ~30GB. Some 400m rows. Would there be a meaningful
> performance difference to run COPY from STDIN using: cat f.csv | psql
> "COPY .. FROM STDIN WITH CSV" versus just doing "COPY ... FROM 'f.csv'
> WITH CSV"?
>
> Thanks. It took about four hours to copy one and I felt that was a little
> much.
catting the file starts another process, and opens a pipe. That can't be
faster than "COPY ... FROM ... WITH CSV".
pg_bulkload (which might be in your repository) is probably what you really
want.
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