Xiaobo Gu wrote: > We have very large files in size will be created as external tables in > PostgreSQL via file_fdw, we > have the following considerations: > 1. Can file_fdw handle files with size large than the size of RAM in the > server.
That shouldn't be a problem. > 2. Will file_fdw scan the full file every time when the external table is > queried, even we have > "where" clause to narrow to a subset of rows , as the file_fdw doesn't have a > server engine. Yes, the complete file will be read whenever the foreign table is queried. Yours, Laurenz Albe -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
